<PAGE>

                      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):  July 1, 1996
                                       
                                       
                                       
                         ADC TELECOMMUNICATIONS, INC.
            (Exact name of registrant as specified in its charter)



          Minnesota                  0-1424              41-0743912
(State or other jurisdiction of(Commission File No.)  (I.R.S. Employer
incorporation or organization)                      Identification No.)



  12501 Whitewater Drive, Minnetonka, Minnesota     55343
     (Address of principal executive offices)     (Zip Code)



     Registrant's telephone number, including area code     (612) 938-8080
                                       
                                       
                                       
                                Not Applicable
         (Former name or former address, if changed since last report)


<PAGE>

Item 2.  Acquisition or Disposition of Assets

       On July 1, 1996, ADC Telecommunications, Inc. (the "Registrant")
purchased eighty percent (80%) of the outstanding capital stock of Solitra Oy,
a Finland corporation ("Solitra") from Solitra's existing shareholders.  In
addition, pursuant to a Stock Purchase Agreement dated July 1, 1996 (the "Stock
Purchase Agreement"), the Registrant will acquire the remaining twenty percent
(20%) of the outstanding capital stock of Solitra over the three year period
from October 21, 1997 to October 21, 1999.  The acquisition of Solitra's stock
was effected through a newly-created, wholly-owned subsidiary of the
Registrant.

       The aggregate purchase price for the stock of Solitra consists of (i) a
cash payment made at closing in the amount of 191,269,500 Finnish Markkaa
(approximately US$41 million), subject to adjustments based upon a post-closing
audit of Solitra's closing date balance sheet, and (ii) additional cash
payments to be made for each of the fiscal years ended October 31, 1997, 1998
and 1999, in amounts to be determined based upon Solitra's financial
performance against targets for revenues and operating profits during such
fiscal years in accordance with the Stock Purchase Agreement.  Such additional
payments, if any, will be characterized as additional purchase price by the
Registrant.

       The purchase price was arrived at by arms-length negotiations between
the Registrant and the shareholders of Solitra.  None of the selling
shareholders is an affiliate of the Registrant.  The Registrant financed the
payment made at closing with cash on hand and the Registrant anticipates that
any additional payments to be made in the future will be paid by funds
generated from operations.

       Solitra is a privately-held corporation that designs, manufactures and
sells radio frequency filters and other base station equipment components and
subsystems.  The Registrant intends that Solitra will continue such operations.

                                       2

<PAGE>

Item 7.  Financial Statements and Exhibits

       (a) Financial statements of businesses acquired.

       It is impracticable to file information called for herein at the time
this Current Report on Form 8-K is being filed.  Such information will be filed
as soon as practicable, but not later than 60 days after the date upon which
this Current Report on Form 8-K is required to be filed.


       (b) Pro forma Financial Information.

       It is impracticable to file information called for herein at the time
this Current Report on Form 8-K is being filed.  Such information will be filed
as soon as practicable, but not later than 60 days after the date upon which
this Current Report on Form 8-K is required to be filed.


       (c) Exhibits

          2.1  Stock Purchase Agreement, dated July 1, 1996, by and
               between ADC Telecommunications, Inc., ADC Mersum Oy and the
               shareholders of Solitra Oy.

                                       3

<PAGE>

                                   Signature

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, hereunto duly authorized.

Date:     July 16, 1996           ADC TELECOMMUNICATIONS, INC.




                                  By:   /s/ Robert E. Switz
                                      -------------------------------
                                      Robert E. Switz
                                      Vice President and
                                      Chief Financial Officer

                                       4

<PAGE>

                                 EXHIBIT INDEX



Exhibit Number Description
- -------------- -----------


     2.1       Stock Purchase Agreement, dated July 1, 1996, by and
               between ADC Telecommunications, Inc., ADC Mersum Oy
               and the shareholders of Solitra Oy.


                                       5
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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):  July 1, 1996
                                       
                                       
                                       
                         ADC TELECOMMUNICATIONS, INC.
            (Exact name of registrant as specified in its charter)

          Minnesota                  0-1424              41-0743912
(State or other jurisdiction of(Commission File No.)  (I.R.S. Employer
incorporation or organization)                      Identification No.)

  12501 Whitewater Drive, Minnetonka, Minnesota     55343
     (Address of principal executive offices)     (Zip Code)

     Registrant's telephone number, including area code     (612) 938-8080
                                       
                                       
                                       
                                Not Applicable
         (Former name or former address, if changed since last report)
Item 2.  Acquisition or Disposition of Assets

       On July 1, 1996, ADC Telecommunications, Inc. (the "Registrant")
purchased eighty percent (80%) of the outstanding capital stock of Solitra Oy,
a Finland corporation ("Solitra") from Solitra's existing shareholders.  In
addition, pursuant to a Stock Purchase Agreement dated July 1, 1996 (the "Stock
Purchase Agreement"), the Registrant will acquire the remaining twenty percent
(20%) of the outstanding capital stock of Solitra over the three year period
from October 21, 1997 to October 21, 1999.  The acquisition of Solitra's stock
was effected through a newly-created, wholly-owned subsidiary of the
Registrant.

       The aggregate purchase price for the stock of Solitra consists of (i) a
cash payment made at closing in the amount of 191,269,500 Finnish Markkaa
(approximately US$41 million), subject to adjustments based upon a post-closing
audit of Solitra's closing date balance sheet, and (ii) additional cash
payments to be made for each of the fiscal years ended October 31, 1997, 1998
and 1999, in amounts to be determined based upon Solitra's financial
performance against targets for revenues and operating profits during such
fiscal years in accordance with the Stock Purchase Agreement.  Such additional
payments, if any, will be characterized as additional purchase price by the
Registrant.

       The purchase price was arrived at by arms-length negotiations between
the Registrant and the shareholders of Solitra.  None of the selling
shareholders is an affiliate of the Registrant.  The Registrant financed the
payment made at closing with cash on hand and the Registrant anticipates that
any additional payments to be made in the future will be paid by funds
generated from operations.

       Solitra is a privately-held corporation that designs, manufactures and
sells radio frequency filters and other base station equipment components and
subsystems.  The Registrant intends that Solitra will continue such operations.

                                       2
Item 7.  Financial Statements and Exhibits

       (a) Financial statements of businesses acquired.

       It is impracticable to file information called for herein at the time
this Current Report on Form 8-K is being filed.  Such information will be filed
as soon as practicable, but not later than 60 days after the date upon which
this Current Report on Form 8-K is required to be filed.

       (b) Pro forma Financial Information.

       It is impracticable to file information called for herein at the time
this Current Report on Form 8-K is being filed.  Such information will be filed
as soon as practicable, but not later than 60 days after the date upon which
this Current Report on Form 8-K is required to be filed.

       (c) Exhibits

          2.1  Stock Purchase Agreement, dated July 1, 1996, by and
               between ADC Telecommunications, Inc., ADC Mersum Oy and the
               shareholders of Solitra Oy.

                                       3
Signature

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, hereunto duly authorized.

Date:     July 16, 1996           ADC TELECOMMUNICATIONS, INC.

                                  By:   /s/ Robert E. Switz
                                      -------------------------------
                                      Robert E. Switz
                                      Vice President and
                                      Chief Financial Officer

                                       4
EXHIBIT INDEX

Exhibit Number Description
- -------------- -----------

     2.1       Stock Purchase Agreement, dated July 1, 1996, by and
               between ADC Telecommunications, Inc., ADC Mersum Oy
               and the shareholders of Solitra Oy.

                                       5