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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>As filed with the Securities and Exchange
Commission on February 24, 2016</B></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 3pt 3in; text-align: right"><B>Registration No.&nbsp;<FONT STYLE="color: blue"><U>
</U></FONT>_______&nbsp;</B></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt">&nbsp;<B>UNITED STATES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>SECURITIES AND EXCHANGE COMMISSION</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>WASHINGTON, D.C. 20549</B></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>FORM&nbsp;S-8</B></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>REGISTRATION STATEMENT UNDER THE SECURITIES
ACT OF 1933</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><B></B></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><FONT STYLE="font-size: 14pt; text-transform: uppercase"><B>ACETO
CORPORATion</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">(Exact Name of Registrant as Specified in
its Charter)</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"></P>

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<TR>
    <TD STYLE="vertical-align: top; font-weight: bold; text-align: center; width: 48%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>New York</B></FONT></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; width: 4%">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold; text-align: center; width: 48%"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt"><B>11-1720520</B></FONT></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(State or Other Jurisdiction</FONT></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">(I.R.S. Employer Identification No.)</FONT></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; text-align: center"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">of Incorporation or Organization)</FONT></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold; text-align: center">&nbsp;</TD></TR>
</TABLE>
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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>4 Tri Harbor Court</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Port Washington, NY 11050</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">(Address, including
Zip Code, of Principal Executive Offices)</P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>ACETO CORPORATION 2015 EQUITY PARTICIPATION
PLAN</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">(Full Title of the Plan)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Steven Rogers, Esq.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Senior Vice President, General Counsel
and Corporate Secretary</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Aceto Corporation</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>4 Tri Harbor Court</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Port Washington, NY 11050</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">(Name and Address Including
Zip Code, of Agent For Service)</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>(516) 627-6000</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center">Telephone Number, Including Area Code, of
Agent for service</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; text-align: center; margin-bottom: 0pt; background-color: white"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center; background-color: white"><B><I>With a Copy
to:</I></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center; background-color: white"><B><I>&nbsp;</I></B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Steven E. Siesser, Esq.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>Lowenstein Sandler LLP</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>1251 Avenue of the Americas</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>New York, NY 10020 </B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt; text-align: center"><B>(212)&nbsp;262-6700</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Indicate by check mark whether the registrant is a large accelerated
filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of &ldquo;large accelerated
filer,&rdquo; &ldquo;accelerated filer&rdquo; and &ldquo;smaller reporting company&rdquo; in Rule&nbsp;12b-2 of the Exchange Act:</P>

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<TR>
    <TD STYLE="vertical-align: top; text-align: center">&nbsp;</TD>
    <TD STYLE="vertical-align: top"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Large accelerated
    filer </FONT><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Accelerated filer
    </FONT><FONT STYLE="font-family: Wingdings">x</FONT></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; text-align: center">&nbsp;</TD>
    <TD STYLE="vertical-align: top"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Non-accelerated
    filer </FONT><FONT STYLE="font-family: Wingdings">&uml;</FONT><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">
    (Do not check if a smaller reporting company)</FONT></TD>
    <TD STYLE="vertical-align: bottom">&nbsp;</TD>
    <TD STYLE="vertical-align: top"><FONT STYLE="font-family: Times New Roman, Times, Serif; font-size: 10pt">Smaller reporting
    company </FONT><FONT STYLE="font-family: Wingdings">&uml;</FONT></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"></P>

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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>CALCULATION OF REGISTRATION FEE</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><B>&nbsp;</B></P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: bottom">
    <TD NOWRAP STYLE="border-top: black 2.25pt double; border-bottom: black 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Title&nbsp;of&nbsp;Securities</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>to&nbsp;be&nbsp;Registered</B></P></TD>
    <TD NOWRAP STYLE="border-top: black 2.25pt double; border-bottom: black 1pt solid; font-weight: bold; text-align: center">&nbsp;</TD>
    <TD NOWRAP STYLE="border-top: black 2.25pt double; border-bottom: black 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Amount</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>to&nbsp;be</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Registered(1)(2)&nbsp;</B></P></TD>
    <TD NOWRAP STYLE="border-top: black 2.25pt double; border-bottom: black 1pt solid; font-weight: bold; text-align: center">&nbsp;</TD>
    <TD COLSPAN="2" NOWRAP STYLE="border-top: black 2.25pt double; border-bottom: black 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Proposed&nbsp;Maximum</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Offering&nbsp;Price</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>per&nbsp;Share(3)</B></P></TD>
    <TD NOWRAP STYLE="border-top: black 2.25pt double; border-bottom: black 1pt solid; font-weight: bold; text-align: center">&nbsp;</TD>
    <TD COLSPAN="2" NOWRAP STYLE="border-top: black 2.25pt double; border-bottom: black 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Proposed&nbsp;Maximum</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Aggregate</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Offering&nbsp;Price(3)</B></P></TD>
    <TD NOWRAP STYLE="border-top: black 2.25pt double; border-bottom: black 1pt solid; font-weight: bold; text-align: center">&nbsp;</TD>
    <TD COLSPAN="2" NOWRAP STYLE="border-top: black 2.25pt double; border-bottom: black 1pt solid">
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Amount&nbsp;of</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Registration</B></P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>Fee(3)</B></P></TD>
    <TD NOWRAP STYLE="border-top: black 2.25pt double; border-bottom: black 1pt solid; font-weight: bold; text-align: center">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; border-bottom: black 1pt solid; padding-left: 11pt; text-indent: -11pt; padding-top: 8pt; padding-bottom: 8pt"><FONT STYLE="font-size: 10pt">Common Stock, $0.01 par value per share</FONT></TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; text-align: center; padding-top: 8pt; padding-bottom: 8pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; text-align: center; padding-top: 8pt; padding-bottom: 8pt"><FONT STYLE="font-size: 10pt">4,250,000</FONT></TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; text-align: center; padding-top: 8pt; padding-bottom: 8pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; text-align: center; padding-top: 8pt; padding-bottom: 8pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; text-align: center; padding-top: 8pt; padding-bottom: 8pt"><FONT STYLE="font-size: 10pt">$20.30</FONT></TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; text-align: center; padding-top: 8pt; padding-bottom: 8pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; text-align: center; padding-top: 8pt; padding-bottom: 8pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; text-align: center; padding-top: 8pt; padding-bottom: 8pt"><FONT STYLE="font-size: 10pt">$86,275,000</FONT></TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; text-align: center; padding-top: 8pt; padding-bottom: 8pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; text-align: center; padding-top: 8pt; padding-bottom: 8pt">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; text-align: center; padding-top: 8pt; padding-bottom: 8pt"><FONT STYLE="font-size: 10pt">$8,688</FONT></TD>
    <TD STYLE="vertical-align: bottom; border-bottom: black 1pt solid; padding-top: 8pt; padding-bottom: 8pt">&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 19.5pt">(1)</TD><TD STYLE="text-align: justify">The number of shares of common stock, par value $0.01 per share (&ldquo;Common Stock&rdquo;), of
Aceto Corporation being registered under this registration statement represents 4,250,000 shares of Common Stock issuable to participants
(including pursuant to the exercise of stock options) under the Aceto Corporation 2015 Equity Participation Plan (the &ldquo;Plan&rdquo;).</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 19.45pt; text-align: justify; text-indent: -19.45pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 19.45pt">(2)</TD><TD STYLE="text-align: justify">Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the &ldquo;Securities Act&rdquo;),
this registration statement covers such additional securities as may be offered or issued to prevent dilution resulting from stock
splits, stock dividends or similar transactions in accordance with the terms of the Plan.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 19.45pt; text-align: justify; text-indent: -19.45pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 0"></TD><TD STYLE="width: 19.45pt">(3)</TD><TD STYLE="text-align: justify">Pursuant to Rule 457(c) and Rule 457(h) under the Securities Act, the proposed maximum offering
price per share and the proposed maximum aggregate offering price are estimated for the purpose of calculating the amount of the
registration fee and are based upon the average of the high and low sales prices of the Common Stock reported on The NASDAQ Global
Select Market on February 18, 2016.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>TABLE OF CONTENTS</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><B>&nbsp;</B></P>

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<TR>
    <TD STYLE="vertical-align: top; font-weight: bold; width: 8%"><B>PART&nbsp;I</B></TD>
    <TD STYLE="vertical-align: top; font-weight: bold; width: 84%"><B>INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</B></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center; width: 8%"><B>1</B></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold"><B>PART&nbsp;II</B></TD>
    <TD STYLE="vertical-align: top; font-weight: bold"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center"><B>1</B></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold"><B>Item&nbsp;3. Incorporation of Documents by Reference.</B></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center"><B>1</B></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold"><B>Item 4. Description of Securities.</B></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center"><B>1</B></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold"><B>Item 5. Interest of Named Experts and Counsel.</B></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center"><B>1</B></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold"><B>Item 6. Indemnification of Directors and Officers.</B></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center"><B>2</B></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold"><B>Item 7. Exemption from Registration Claimed.</B></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center"><B>2</B></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold"><B>Item 8. Exhibits.</B></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center"><B>2</B></TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center">&nbsp;</TD></TR>
<TR>
    <TD STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: top; font-weight: bold"><B>Item 9. Undertakings.</B></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center"><B>2</B></TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center">&nbsp;</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="vertical-align: top; font-weight: bold"><B>SIGNATURES</B></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center"><B>4</B></TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="vertical-align: top; font-weight: bold">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center">&nbsp;</TD></TR>
<TR>
    <TD COLSPAN="2" STYLE="vertical-align: top; font-weight: bold"><B>INDEX OF EXHIBITS</B></TD>
    <TD STYLE="vertical-align: bottom; font-weight: bold; text-align: center"><B>5</B></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0"><B>PART&nbsp;I</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0"><B>INFORMATION REQUIRED IN THE SECTION&nbsp;10(a)&nbsp;PROSPECTUS</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 46.2pt; text-align: justify">The information required to be contained
in the Section 10(a) prospectus is omitted from this registration statement and will be delivered to the participants in the Aceto
Corporation 2015 Equity Participation Plan covered by this registration statement pursuant to Rule 428 of the Securities Act of
1933, as amended (the &ldquo;Securities Act&rdquo;), and the note to Part I of Form S-8.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 46.2pt">&nbsp;&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0"><FONT STYLE="text-transform: uppercase"><B>Part&nbsp;II</B></FONT></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0"><B>INFORMATION REQUIRED IN THE REGISTRATION
STATEMENT</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 46.2pt"><B>Item 3.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Incorporation of Documents by Reference.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 46.2pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.65in">The following documents,
which have been filed by Aceto Corporation (the &ldquo;Company&rdquo; or the &ldquo;Registrant&rdquo;) with the Securities and
Exchange Commission, are hereby incorporated by reference in this registration statement:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 46.8pt"></TD><TD STYLE="width: 15.6pt"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD STYLE="text-align: justify">the Company&rsquo;s Annual Report on Form 10-K for the fiscal year ended June 30, 2015;</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 62.65pt; text-align: justify; text-indent: -15.85pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 46.8pt"></TD><TD STYLE="width: 15.85pt"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD STYLE="text-align: justify">the Company&rsquo;s definitive Proxy Statement on Schedule 14A, filed with the Securities and Exchange
Commission on October 26, 2015 as supplemented on November 23, 2015;</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 62.65pt; text-align: justify; text-indent: -15.85pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 46.8pt"></TD><TD STYLE="width: 15.85pt"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD STYLE="text-align: justify">the Company&rsquo;s Quarterly Report on Form 10-Q for the quarterly period ended September 30,
2015 and for the quarterly period ended December 31, 2015;</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 62.65pt; text-align: justify; text-indent: -15.85pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 46.8pt"></TD><TD STYLE="width: 15.85pt"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD STYLE="text-align: justify">the Company&rsquo;s Current Reports on Form 8-K filed with the Securities and Exchange Commission
on October 28, 2015, November 10, 2015, November 12, 2015, November 16, 2015, November 23, 2015 and December 16, 2015; and</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 63pt; text-align: justify; text-indent: -13.5pt">&nbsp;</P>

<TABLE CELLPADDING="0" CELLSPACING="0" WIDTH="100%" STYLE="font: 10pt Times New Roman, Times, Serif; margin-top: 0pt; margin-bottom: 0pt"><TR STYLE="vertical-align: top">
<TD STYLE="width: 49.5pt"></TD><TD STYLE="width: 13.5pt"><FONT STYLE="font-family: Symbol">&middot;</FONT></TD><TD STYLE="text-align: justify">the description of the Company&rsquo;s common stock contained in the Company&rsquo;s Registration
Statement on Form S-3 (File No. 333-207394) filed with the SEC on October 13, 2015, including any amendment or report filed for
the purpose of updating such description.</TD></TR></TABLE>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 0.5in; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 46.2pt">All documents subsequently
filed by the Company pursuant to Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended (the &ldquo;Exchange
Act&rdquo;), after the date of this registration statement, prior to the filing of a post-effective amendment to this registration
statement which indicates that all securities offered hereby have been sold or which deregisters all securities then remaining
unsold, shall be deemed to be incorporated by reference in this registration statement and to be a part hereof from the date of
filing of such documents. Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall
be deemed to be modified or superseded for purposes of this registration statement to the extent that a statement contained herein
or in any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes
such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute
a part of this registration statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 46.2pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 46.2pt"><B>Item 4.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Description of Securities.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 46.2pt">Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 46.2pt"><B>Item 5.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Interests of Named Experts and Counsel.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 45pt">Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>


<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 46.2pt"><B>Item 6.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Indemnification of Directors and Officers.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 46.2pt">The Company is incorporated
under the New York Business Corporation Law (&ldquo;NYBCL&rdquo;). Section 722 of the NYBCL generally permits a corporation to
indemnify its officers and directors against judgments, fines, amounts paid in settlement and reasonable expenses, including attorney&rsquo;s
fees actually and necessarily incurred in an action or proceeding (other than an action by or in the right of a corporation, a
&ldquo;derivative action&rdquo;), if such directors or officers acted in good faith, for a purpose which they reasonably believed
to be in the best interests of the corporation, and, with respect to a criminal action or proceeding, had no reasonable cause to
believe their conduct was unlawful. A similar standard is applicable in the case of derivative actions except that no indemnification
is permitted in respect of (i) a threatened action, or a pending action which is settled or disposed of, or (ii) any claim, issue
or matter as to which such officers or directors are adjudged to be liable to the corporation, unless and only to the extent a
court determines that such officers or directors are fairly and reasonably entitled to indemnity for such portion of the settlement
and expenses as the court deems proper. Section 724 of the NYBCL requires indemnification in a civil action or proceeding if so
ordered by a court.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 46.2pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 46.2pt">Article Eighth of
the Company&rsquo;s restated certificate of incorporation, as amended, provides that, to the fullest extent permitted by the NYBCL,
the Company&rsquo;s directors shall not be liable to the Company or its stockholders for monetary damages for any breach of duty
as a director.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 46.2pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 46.2pt">Article Seventh of
the Company&rsquo;s restated certificate of incorporation, as amended, and Article XI of the Company&rsquo;s by-laws provide that
the Company shall, to the maximum extent permitted under the NYBCL, indemnify any person who was or is made a party or is threatened
to be made a party to any threatened, pending or completed action, suit, proceeding or claim, whether civil, criminal, administrative
or investigative, by reason of the fact that such person is or was or has agreed to be a director or officer of the Company or
while a director or officer is or was serving at the request of the Company as a director, officer, partner, trustee, employee,
or agent of any corporation, partnership, joint venture, trust or other enterprise, including service with respect to employee
benefit plans, against expenses (including attorney&rsquo;s fees), judgments, fines, penalties and amounts paid in settlement incurred
in connection with the investigation, preparation to defend or defense of such action, suit, proceeding or claim.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 46.2pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 46.2pt">The Company also maintains
directors&rsquo; and officers&rsquo; insurance.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 46.2pt"><B>Item 7.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Exemption from Registration Claimed.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 46.2pt">Not applicable.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 46.2pt"><B>Item 8.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Exhibits.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 46.2pt"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 45pt">For a list of exhibits,
see the Exhibit Index in this registration statement, which is incorporated into this Item by reference.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 46.2pt"><B>Item 9.&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
Undertakings.</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 46.2pt; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">(a)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
undersigned Registrant hereby undertakes:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(1)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;To
file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 1in">(i)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;To
include any prospectus required by section 10(a)(3)&nbsp;of the Securities Act of 1933;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">(ii)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;To
reflect in the prospectus any facts or events arising after the effective date of this registration statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information in
the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total
dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the
estimated maximum offering range may be reflected in the form of prospectus filed with the Securities and Exchange Commission pursuant
to Rule&nbsp;424(b)&nbsp;if, in the aggregate, the changes in volume and price represent no more than a 20% change in the maximum
aggregate offering price set forth in the &ldquo;Calculation of Registration Fee&rdquo; table in the effective registration statement;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0 0pt 1in; text-align: justify">(iii)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;To
include any material information with respect to the plan of distribution not previously disclosed in the registration statement
or any material change to such information in the registration statement;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in"><I>Provided, however</I>,
that Paragraphs (a)(1)(i)&nbsp;and (a)(1)(ii)&nbsp;of this section shall not apply if the information required to be included in
a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Securities and Exchange Commission
by the Registrant pursuant to section 13 or section 15(d)&nbsp;of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d))
that are incorporated by reference in the registration statement.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(2)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;That,
for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed
to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time
shall be deemed to be the initial bona fide offering thereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">(3)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;To
remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the
termination of the offering.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">(b)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;The
undersigned Registrant hereby undertakes that, for purposes of determining any liability under the Securities Act of 1933, each
filing of the Registrant&rsquo;s annual report pursuant to section 13(a)&nbsp;or section 15(d)&nbsp;of the Securities Exchange
Act of 1934 (and, where applicable, each filing of an employee benefit plan&rsquo;s annual report pursuant to section 15(d)&nbsp;of
the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new
registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed
to be the initial bona fide offering thereof.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify">(c)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Insofar
as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the Registrant pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion
of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore,
unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant
of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered,
the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court
of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 0.5in">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to the requirements
of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements
for filing on Form&nbsp;S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the city of Port Washington, State of New York, on this <FONT STYLE="font-size: 10pt">24th</FONT> day of February,
2016.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 11pt">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD COLSPAN="2" STYLE="font-weight: bold"><B>ACETO CORPORATION</B></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-weight: bold; width: 60%">&nbsp;</TD>
    <TD STYLE="font-weight: bold; width: 3%">&nbsp;</TD>
    <TD STYLE="font-weight: bold; width: 37%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>By:</TD>
    <TD STYLE="border-bottom: Black 1pt solid">/s/ Steven Rogers</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>Steven Rogers</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>Senior Vice President</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 11pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center; text-indent: 11pt"><B>SIGNATURES</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 11pt">&nbsp;</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: justify; text-indent: 0.5in">Pursuant to the requirements
of the Securities Act of 1933, as amended, this registration statement has been signed by the following persons in the capacities
and on the dates indicated.</P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-indent: 0.5in">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="font-weight: bold; width: 30%"><FONT STYLE="font-size: 10pt"><B>Signatures</B></FONT></TD>
    <TD STYLE="font-weight: bold; width: 2%">&nbsp;</TD>
    <TD STYLE="font-weight: bold; width: 48%"><FONT STYLE="font-size: 10pt"><B>Title</B></FONT></TD>
    <TD STYLE="font-weight: bold; width: 2%">&nbsp;</TD>
    <TD STYLE="font-weight: bold; width: 18%"><FONT STYLE="font-size: 10pt"><B>Date</B></FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ Salvatore Guccione *</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">President, Chief Executive Officer and</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">February 24, 2016</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">Salvatore Guccione</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director (Principal Executive Officer)</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold">&nbsp;</TD>
    <TD STYLE="font-weight: bold">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ Douglas Roth *</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Assistant Secretary/Treasurer, Senior Vice</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">February 24, 2016</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">Douglas Roth</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">President and Chief Financial Officer</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">(Principal Financial and Accounting Officer)</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ Albert L. Eilender *</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Chairman </FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">February 24, 2016</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">Albert L. Eilender</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid"><FONT STYLE="font-size: 10pt">/s/ Hans C. Noetzli *</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">February 24, 2016</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">Hans C. Noetzli</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">William N. Britton</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">Natasha Giordano</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">&nbsp;</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">Alan G. Levin</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="border-bottom: Black 1pt solid">/s/ Daniel B. Yarosh *</TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">Director</FONT></TD>
    <TD>&nbsp;</TD>
    <TD><FONT STYLE="font-size: 10pt">February 24, 2016</FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD><FONT STYLE="font-size: 10pt">Dr. Daniel B. Yarosh</FONT></TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR STYLE="vertical-align: top">
    <TD STYLE="width: 5%">*By:</TD>
    <TD STYLE="border-bottom: Black 1pt solid; width: 25%"><FONT STYLE="font-size: 10pt">/s/ </FONT>Steven Rogers</TD>
    <TD STYLE="width: 70%">&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD>&nbsp;</TD>
    <TD COLSPAN="2">Steven Rogers, Attorney-in-Fact</TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>


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<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0"><B>&nbsp;</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0; text-align: center"><B>EXHIBIT INDEX</B></P>

<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>

<TABLE CELLSPACING="0" CELLPADDING="0" STYLE="font: 10pt Times New Roman, Times, Serif; width: 100%; border-collapse: collapse">
<TR>
    <TD STYLE="vertical-align: top; border-bottom: Black 1pt solid; font-weight: bold; text-align: center; padding-right: 0; width: 8%"><FONT STYLE="font-size: 10pt"><B>Exhibit</B></FONT><BR>
<FONT STYLE="font-size: 10pt"><B>Number</B></FONT></TD>
    <TD STYLE="vertical-align: top; width: 1%">&nbsp;</TD>
    <TD STYLE="vertical-align: bottom; border-bottom: Black 1pt solid; font-weight: bold; text-align: center; width: 91%"><FONT STYLE="font-size: 10pt"><B>Description of Exhibit</B></FONT></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="padding-right: 15pt">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: right; padding-right: 15pt">4.1</TD>
    <TD>&nbsp;</TD>
    <TD>Amended and Restated Certificate of Incorporation of Aceto Corporation (incorporated by reference to Exhibit 3.1 to the Registrant&rsquo;s Quarterly Report on Form 10-Q filed on February 5, 2016)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: right; padding-right: 15pt">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: right; padding-right: 15pt">4.2</TD>
    <TD>&nbsp;</TD>
    <TD>Amendment to Amended and Restated Certificate of Incorporation of Aceto Corporation (incorporated by reference to Exhibit 3.2 to the Registrant&rsquo;s Quarterly Report on Form 10-Q filed on February 5, 2016)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: right; padding-right: 15pt">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: right; padding-right: 15pt">4.3</TD>
    <TD>&nbsp;</TD>
    <TD>Aceto Corporation By-Laws, amended July 28, 2014 (incorporated by reference to Exhibit 3.1 to the Registrant&rsquo;s Current Report on Form 8-K filed on July 31, 2014)</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: right; padding-right: 15pt">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: right; padding-right: 15pt">5.1</TD>
    <TD>&nbsp;</TD>
    <TD>Opinion of Lowenstein Sandler LLP</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: right; padding-right: 15pt">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: right; padding-right: 15pt">23.1</TD>
    <TD>&nbsp;</TD>
    <TD>Consent of BDO USA, LLP</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: right; padding-right: 15pt">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: right; padding-right: 15pt">23.2</TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Consent of Lowenstein Sandler LLP (filed as part of Exhibit
        5.1)</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P></TD></TR>
<TR STYLE="vertical-align: top">
    <TD STYLE="text-align: right; padding-right: 15pt">24.1</TD>
    <TD>&nbsp;</TD>
    <TD>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">Power of Attorney</P>
        <P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P></TD></TR>
</TABLE>
<P STYLE="font: 10pt Times New Roman, Times, Serif; margin: 0pt 0">&nbsp;</P>


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[{"type": "S-8", "sequence": "1", "filename": "t1600101_s-8.htm", "description": "FORM S-8", "secsgml_size_bytes": 65467}]
{"company-data": {"conformed-name": "ACETO CORP", "cik": "0000002034", "assigned-sic": "5122", "irs-number": "111720520", "state-of-incorporation": "NY", "fiscal-year-end": "0630"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-209693", "film-number": "161452876"}, "business-address": {"street1": "4 TRI HARBOR COURT", "city": "PORT WASHINGTON", "state": "NY", "zip": "11050", "phone": "5166276000"}, "mail-address": {"street1": "4 TRI HARBOR COURT", "city": "PORT WASHINGTON", "state": "NY", "zip": "11050"}, "former-company": {"former-conformed-name": "ACETO CHEMICAL CO INC", "date-changed": "19851203"}}
As filed with the Securities and Exchange
Commission on February 24, 2016
Registration No.
_______
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM S-8
REGISTRATION STATEMENT UNDER THE SECURITIES
ACT OF 1933
ACETO
CORPORATion
(Exact Name of Registrant as Specified in
its Charter)
New York
11-1720520
(State or Other Jurisdiction
(I.R.S. Employer Identification No.)
of Incorporation or Organization)
4 Tri Harbor Court
Port Washington, NY 11050
(Address, including
Zip Code, of Principal Executive Offices)
ACETO CORPORATION 2015 EQUITY PARTICIPATION
PLAN
(Full Title of the Plan)
Steven Rogers, Esq.
Senior Vice President, General Counsel
and Corporate Secretary
Aceto Corporation
4 Tri Harbor Court
Port Washington, NY 11050
(Name and Address Including
Zip Code, of Agent For Service)
(516) 627-6000
Telephone Number, Including Area Code, of
Agent for service
With a Copy
to:
Steven E. Siesser, Esq.
Lowenstein Sandler LLP
1251 Avenue of the Americas
New York, NY 10020
(212) 262-6700
Indicate by check mark whether the registrant is a large accelerated
filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated
filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2 of the Exchange Act:
Large accelerated
    filer
¨
Accelerated filer
x
Non-accelerated
    filer
¨
(Do not check if a smaller reporting company)
Smaller reporting
    company
¨
CALCULATION OF REGISTRATION FEE
Title of Securities
to be Registered
Amount
to be
Registered(1)(2)
Proposed Maximum
Offering Price
per Share(3)
Proposed Maximum
Aggregate
Offering Price(3)
Amount of
Registration
Fee(3)
Common Stock, $0.01 par value per share
4,250,000
$20.30
$86,275,000
$8,688
(1)
The number of shares of common stock, par value $0.01 per share ("Common Stock"), of
Aceto Corporation being registered under this registration statement represents 4,250,000 shares of Common Stock issuable to participants
(including pursuant to the exercise of stock options) under the Aceto Corporation 2015 Equity Participation Plan (the "Plan").
(2)
Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the "Securities Act"),
this registration statement covers such additional securities as may be offered or issued to prevent dilution resulting from stock
splits, stock dividends or similar transactions in accordance with the terms of the Plan.
(3)
Pursuant to Rule 457(c) and Rule 457(h) under the Securities Act, the proposed maximum offering
price per share and the proposed maximum aggregate offering price are estimated for the purpose of calculating the amount of the
registration fee and are based upon the average of the high and low sales prices of the Common Stock reported on The NASDAQ Global
Select Market on February 18, 2016.
TABLE OF CONTENTS
PART I
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
1
PART II
INFORMATION REQUIRED IN THE REGISTRATION STATEMENT
1
Item 3. Incorporation of Documents by Reference.
1
Item 4. Description of Securities.
1
Item 5. Interest of Named Experts and Counsel.
1
Item 6. Indemnification of Directors and Officers.
2
Item 7. Exemption from Registration Claimed.
2
Item 8. Exhibits.
2
Item 9. Undertakings.
2
SIGNATURES
4
INDEX OF EXHIBITS
5
PART I
INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS
The information required to be contained
in the Section 10(a) prospectus is omitted from this registration statement and will be delivered to the participants in the Aceto
Corporation 2015 Equity Participation Plan covered by this registration statement pursuant to Rule 428 of the Securities Act of
1933, as amended (the "Securities Act"), and the note to Part I of Form S-8.
Part II
INFORMATION REQUIRED IN THE REGISTRATION
STATEMENT
Item 3.        
Incorporation of Documents by Reference.
The following documents,
which have been filed by Aceto Corporation (the "Company" or the "Registrant") with the Securities and
Exchange Commission, are hereby incorporated by reference in this registration statement:
·
the Company's Annual Report on Form 10-K for the fiscal year ended June 30, 2015;
·
the Company's definitive Proxy Statement on Schedule 14A, filed with the Securities and Exchange
Commission on October 26, 2015 as supplemented on November 23, 2015;
·
the Company's Quarterly Report on Form 10-Q for the quarterly period ended September 30,
2015 and for the quarterly period ended December 31, 2015;
·
the Company's Current Reports on Form 8-K filed with the Securities and Exchange Commission
on October 28, 2015, November 10, 2015, November 12, 2015, November 16, 2015, November 23, 2015 and December 16, 2015; and
·
the description of the Company's common stock contained in the Company's Registration
Statement on Form S-3 (File No. 333-207394) filed with the SEC on October 13, 2015, including any amendment or report filed for
the purpose of updating such description.
All documents subsequently
filed by the Company pursuant to Section 13(a), 13(c), 14 or 15(d) of the Securities Exchange Act of 1934, as amended (the "Exchange
Act"), after the date of this registration statement, prior to the filing of a post-effective amendment to this registration
statement which indicates that all securities offered hereby have been sold or which deregisters all securities then remaining
unsold, shall be deemed to be incorporated by reference in this registration statement and to be a part hereof from the date of
filing of such documents. Any statement contained in a document incorporated or deemed to be incorporated by reference herein shall
be deemed to be modified or superseded for purposes of this registration statement to the extent that a statement contained herein
or in any other subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes
such statement. Any such statement so modified or superseded shall not be deemed, except as so modified or superseded, to constitute
a part of this registration statement.
Item 4.        
Description of Securities.
Not applicable.
Item 5.        
Interests of Named Experts and Counsel.
Not applicable.
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Item 6.         Indemnification of Directors and Officers.
The Company is incorporated
under the New York Business Corporation Law ("NYBCL"). Section 722 of the NYBCL generally permits a corporation to
indemnify its officers and directors against judgments, fines, amounts paid in settlement and reasonable expenses, including attorney's
fees actually and necessarily incurred in an action or proceeding (other than an action by or in the right of a corporation, a
"derivative action"), if such directors or officers acted in good faith, for a purpose which they reasonably believed
to be in the best interests of the corporation, and, with respect to a criminal action or proceeding, had no reasonable cause to
believe their conduct was unlawful. A similar standard is applicable in the case of derivative actions except that no indemnification
is permitted in respect of (i) a threatened action, or a pending action which is settled or disposed of, or (ii) any claim, issue
or matter as to which such officers or directors are adjudged to be liable to the corporation, unless and only to the extent a
court determines that such officers or directors are fairly and reasonably entitled to indemnity for such portion of the settlement
and expenses as the court deems proper. Section 724 of the NYBCL requires indemnification in a civil action or proceeding if so
ordered by a court.
Article Eighth of
the Company's restated certificate of incorporation, as amended, provides that, to the fullest extent permitted by the NYBCL,
the Company's directors shall not be liable to the Company or its stockholders for monetary damages for any breach of duty
as a director.
Article Seventh of
the Company's restated certificate of incorporation, as amended, and Article XI of the Company's by-laws provide that
the Company shall, to the maximum extent permitted under the NYBCL, indemnify any person who was or is made a party or is threatened
to be made a party to any threatened, pending or completed action, suit, proceeding or claim, whether civil, criminal, administrative
or investigative, by reason of the fact that such person is or was or has agreed to be a director or officer of the Company or
while a director or officer is or was serving at the request of the Company as a director, officer, partner, trustee, employee,
or agent of any corporation, partnership, joint venture, trust or other enterprise, including service with respect to employee
benefit plans, against expenses (including attorney's fees), judgments, fines, penalties and amounts paid in settlement incurred
in connection with the investigation, preparation to defend or defense of such action, suit, proceeding or claim.
The Company also maintains
directors' and officers' insurance.
Item 7.        
Exemption from Registration Claimed.
Not applicable.
Item 8.        
Exhibits.
For a list of exhibits,
see the Exhibit Index in this registration statement, which is incorporated into this Item by reference.
Item 9.        
Undertakings.
(a)          The
undersigned Registrant hereby undertakes:
(1)          To
file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:
(i)          To
include any prospectus required by section 10(a)(3) of the Securities Act of 1933;
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(ii)          To
reflect in the prospectus any facts or events arising after the effective date of this registration statement (or the most recent
post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information in
the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total
dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the
estimated maximum offering range may be reflected in the form of prospectus filed with the Securities and Exchange Commission pursuant
to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than a 20% change in the maximum
aggregate offering price set forth in the "Calculation of Registration Fee" table in the effective registration statement;
(iii)          To
include any material information with respect to the plan of distribution not previously disclosed in the registration statement
or any material change to such information in the registration statement;
Provided, however
,
that Paragraphs (a)(1)(i) and (a)(1)(ii) of this section shall not apply if the information required to be included in
a post-effective amendment by those paragraphs is contained in reports filed with or furnished to the Securities and Exchange Commission
by the Registrant pursuant to section 13 or section 15(d) of the Securities Exchange Act of 1934 (15 U.S.C. 78m or 78o(d))
that are incorporated by reference in the registration statement.
(2)          That,
for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed
to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time
shall be deemed to be the initial bona fide offering thereof.
(3)          To
remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the
termination of the offering.
(b)          The
undersigned Registrant hereby undertakes that, for purposes of determining any liability under the Securities Act of 1933, each
filing of the Registrant's annual report pursuant to section 13(a) or section 15(d) of the Securities Exchange
Act of 1934 (and, where applicable, each filing of an employee benefit plan's annual report pursuant to section 15(d) of
the Securities Exchange Act of 1934) that is incorporated by reference in the registration statement shall be deemed to be a new
registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed
to be the initial bona fide offering thereof.
(c)          Insofar
as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, officers and controlling
persons of the Registrant pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion
of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore,
unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant
of expenses incurred or paid by a director, officer or controlling person of the Registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered,
the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court
of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.
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SIGNATURES
Pursuant to the requirements
of the Securities Act of 1933, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements
for filing on Form S-8 and has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the city of Port Washington, State of New York, on this
24th
day of February,
2016.
ACETO CORPORATION
By:
/s/ Steven Rogers
Steven Rogers
Senior Vice President
SIGNATURES
Pursuant to the requirements
of the Securities Act of 1933, as amended, this registration statement has been signed by the following persons in the capacities
and on the dates indicated.
Signatures
Title
Date
/s/ Salvatore Guccione *
President, Chief Executive Officer and
February 24, 2016
Salvatore Guccione
Director (Principal Executive Officer)
/s/ Douglas Roth *
Assistant Secretary/Treasurer, Senior Vice
February 24, 2016
Douglas Roth
President and Chief Financial Officer
(Principal Financial and Accounting Officer)
/s/ Albert L. Eilender *
Chairman
February 24, 2016
Albert L. Eilender
/s/ Hans C. Noetzli *
Director
February 24, 2016
Hans C. Noetzli
Director
William N. Britton
Director
Natasha Giordano
Director
Alan G. Levin
/s/ Daniel B. Yarosh *
Director
February 24, 2016
Dr. Daniel B. Yarosh
*By:
/s/
Steven Rogers
Steven Rogers, Attorney-in-Fact
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EXHIBIT INDEX
Exhibit
Number
Description of Exhibit
4.1
Amended and Restated Certificate of Incorporation of Aceto Corporation (incorporated by reference to Exhibit 3.1 to the Registrant's Quarterly Report on Form 10-Q filed on February 5, 2016)
4.2
Amendment to Amended and Restated Certificate of Incorporation of Aceto Corporation (incorporated by reference to Exhibit 3.2 to the Registrant's Quarterly Report on Form 10-Q filed on February 5, 2016)
4.3
Aceto Corporation By-Laws, amended July 28, 2014 (incorporated by reference to Exhibit 3.1 to the Registrant's Current Report on Form 8-K filed on July 31, 2014)
5.1
Opinion of Lowenstein Sandler LLP
23.1
Consent of BDO USA, LLP
23.2
Consent of Lowenstein Sandler LLP (filed as part of Exhibit
        5.1)
24.1
Power of Attorney
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