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      8-K</strong></font></div>
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      REPORT</strong></font></div>
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      to Section 13 or 15(d) of the Securities Exchange Act of
      1934</strong></font></div>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date
                of Report (Date of Earliest Event Reported): August 10, 2006</font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(August
                8, 2006)</font></div>
            </td>
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            <td colspan="3" valign="middle" width="64%" style="border-bottom: medium none;">
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 28pt; FONT-FAMILY: Times New Roman, serif"><strong><u>ISORAY,
                INC.</u></strong></font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(Exact
                name of registrant as specified in its charter) </font></div>
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            <td valign="middle" width="15%">&#160;</td>
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              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">(State
                or other jurisdiction </font></div>
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                incorporation)</font></div>
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                </font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">File
                Number)</font></div>
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                Employer </font></div>
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      Hills Street, Suite 106, Richland, Washington 99354</u></strong></font></div>
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      375-1202</u></strong></font></div>
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      telephone number)</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>ITEM&#160;1.02
      Termination of a Material Definitive Agreement</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
      December 7, 2005, IsoRay, Inc. (the "Registrant") entered into a SICAV ONE
      Securities Purchase Agreement and a SICAV TWO Securities Purchase Agreement
      (collectively, the "Purchase Agreements") with Mercatus &amp; Partners, Limited,
      a United Kingdom private limited company ("Mercatus"). Pursuant to the Purchase
      Agreements, Mercatus agreed, subject to receipt of sufficient funding, to
      purchase 1,748,146 shares of the Registrant's common stock at a purchase price
      of $3.502 per share, or $6,122,007 in the aggregate. In the event sufficient
      funding was not received to enable Mercatus to purchase the shares within thirty
      days from the date of delivery of the share certificates to the custodial bank,
      the share certificates were to be returned to the Registrant and each party
      would then have no further obligations under the Purchase Agreements.
</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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      no
      funding had been received, on May 18, 2006, the Registrant requested the return
      of the share certificates. After significant delay and IsoRay's attainment
      of a
      court order, the share certificates were returned. On August 8, 2006, the share
      certificates were cancelled and the Purchase Agreements were terminated.
      Following the cancellation, the Registrant had 13,549,959 shares of common
      stock
      outstanding.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>SIGNATURES</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">In
      accordance with the requirements of the Exchange Act, the Registrant caused
      this
      report to be signed on its behalf by the undersigned, thereunto duly
      authorized.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Dated:
      August 9, 2006</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="justify">&#160;</div>
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      <table align="center" bgcolor="#ffffff" border="0" cellpadding="0" cellspacing="0" width="100%">

          <tr valign="top" bgcolor="#ffffff">
            <td width="50%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td width="1%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td width="49%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
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            <td colspan="2"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">IsoRay,
              Inc., a
              Minnesota corporation</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
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          <tr valign="top" bgcolor="#ffffff">
            <td>&#160;</td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">By:&#160;&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">/s/
              Roger E. Girard</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td colspan="2"><font style="FONT-FAMILY: " size="1">&#160;</font></td>
            <td align="left">
              <hr style="COLOR: black" align="left" noshade size="2" width="80%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Roger
              E. Girard, CEO</font></td>
          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td colspan="2"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td>&#160;</td>
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{"company-data": {"conformed-name": "IsoRay, Inc.", "cik": "0000728387", "assigned-sic": "3841", "irs-number": "411458152", "state-of-incorporation": "MN", "fiscal-year-end": "0930"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-14247", "film-number": "061020306"}, "business-address": {"street1": "350 HILLS STREET,", "street2": "SUITE 106", "city": "RICHLAND", "state": "WA", "zip": "99354", "phone": "(509) 375-1202"}, "mail-address": {"street1": "350 HILLS STREET,", "street2": "SUITE 106", "city": "RICHLAND", "state": "WA", "zip": "99354"}, "former-company": {"former-conformed-name": "CENTURY PARK PICTURES CORP", "date-changed": "19920703"}}
United
      States Securities And Exchange Commission
Washington,
      DC 20549
FORM
      8-K
CURRENT
      REPORT
Pursuant
      to Section 13 or 15(d) of the Securities Exchange Act of
      1934
Date
                of Report (Date of Earliest Event Reported): August 10, 2006
(August
                8, 2006)
ISORAY,
                INC.
(Exact
                name of registrant as specified in its charter)
Minnesota
(State
                or other jurisdiction
of
                incorporation)
000-14247
(Commission
File
                Number)
41-1458152
(IRS
                Employer
Identification
                No.)
350
      Hills Street, Suite 106, Richland, Washington 99354
(Address
      of principal executive offices) (Zip Code)
(509)
      375-1202
(Registrant's
      telephone number)
ITEM 1.02
      Termination of a Material Definitive Agreement
On
      December 7, 2005, IsoRay, Inc. (the "Registrant") entered into a SICAV ONE
      Securities Purchase Agreement and a SICAV TWO Securities Purchase Agreement
      (collectively, the "Purchase Agreements") with Mercatus & Partners, Limited,
      a United Kingdom private limited company ("Mercatus"). Pursuant to the Purchase
      Agreements, Mercatus agreed, subject to receipt of sufficient funding, to
      purchase 1,748,146 shares of the Registrant's common stock at a purchase price
      of $3.502 per share, or $6,122,007 in the aggregate. In the event sufficient
      funding was not received to enable Mercatus to purchase the shares within thirty
      days from the date of delivery of the share certificates to the custodial bank,
      the share certificates were to be returned to the Registrant and each party
      would then have no further obligations under the Purchase Agreements.
As
      no
      funding had been received, on May 18, 2006, the Registrant requested the return
      of the share certificates. After significant delay and IsoRay's attainment
      of a
      court order, the share certificates were returned. On August 8, 2006, the share
      certificates were cancelled and the Purchase Agreements were terminated.
      Following the cancellation, the Registrant had 13,549,959 shares of common
      stock
      outstanding.
SIGNATURES
In
      accordance with the requirements of the Exchange Act, the Registrant caused
      this
      report to be signed on its behalf by the undersigned, thereunto duly
      authorized.
Dated:
      August 9, 2006
IsoRay,
              Inc., a
              Minnesota corporation
By:
/s/
              Roger E. Girard
Roger
              E. Girard, CEO