================================================================================ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ------------------------------------------------- FORM 10-K/A ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2001 Commission File Number 0-13071 INTERPHASE CORPORATION (Exact name of registrant as specified in its charter) TEXAS 75-1549797 (State or other jurisdiction of (I.R.S. Employer incorporation or organization) Identification No.) 13800 SENLAC, DALLAS, TEXAS 75234 (Address of principal executive offices and zip code) Registrant's telephone number, including area code: (214) 654-5000 Securities registered pursuant to Section 12(b) of the Act: NONE Securities registered pursuant to Section 12(g) of the Act: TITLE OF CLASS Common Stock, $.10 par value Indicate by check mark whether the registrant (1) has filed all reports required by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes X No --- --- Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this 10-K. [X] The aggregate market value of the voting stock held by non-affiliates of the registrant on March 4, 2002 was approximately $27,312,000. As of March 4, 2002, registrant had 5,598,805 shares of Common Stock outstanding. DOCUMENTS INCORPORATED BY REFERENCE Parts of the following documents are incorporated by reference into this annual report on Form 10-K Report: Portions of the Definitive Proxy Statement for Annual Meeting of Shareholders to be held on May 1, 2002 (Part III). ================================================================================ This Form 10-K/A amends the Company's Form 10-K405 filed on March 26, 2002 as follows: ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT The following table sets forth certain information as to the number of shares of Common Stock of the Company beneficially owned as of March 4, 2002 by (i) each person who is known to the Company to own beneficially more than 5% of the outstanding Common Stock of the Company, (ii) certain executive officers and each director of the Company and (iii) all executive officers and directors as a group. Each of the owners named below has sole voting and investment power with respect to the shares of Common Stock beneficially owned by him or it unless otherwise indicated. <Table> <Caption> Name and address of Amount and Nature of Percent of Beneficial Owner Beneficial Ownership Class ------------------ -------------------- ---------- Gregory B. Kalush 329,830 (1)(2) 5.9% S. Thomas Thawley 276,959 (1) 4.9% Steven P. Kovac 93,335 (1) 1.7% David H. Segrest 52,000 (1) 0.9% Paul N. Hug 48,000 (1) 0.9% James F. Halpin 42,000 (1) 0.8% William R. Voss 41,000 (1) 0.7% Randall D. Ledford 20,000 (1) 0.4% All executive officers and directors as a group (8 persons) 903,124 (3) 16.1% Royce & Associates, Inc. 1414 Avenue of the Americas New York, NY 10019 446,000 8.0% Joseph Harrosh 40900 Grimmer Blvd Freemont, CA 94538 353,400 6.3% </Table> (1) Includes vested options to purchase Common Stock with exercise prices ranging from $4.38-$23.00 per share (fair market value on the respective dates of grant) as follows: Mr. Kalush, 248,501 shares; Mr. Thawley, 50,334 shares; Mr. Kovac, 93,335 shares; Mr. Segrest, 47,000 shares; Mr. Hug, 47,000 shares; Mr. Halpin, 35,000 shares; Mr. Voss, 40,000 shares and Mr. Ledford, 20,000 shares. (2) Includes beneficial ownership of shares due to voting rights on shares held by Motorola (81,329 shares). (3) Includes 581,170 shares that may be acquired upon exercise of vested stock options. 1 SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. INTERPHASE CORPORATION Date: April 22, 2002 By: /s/ Gregory B. Kalush ------------------------- Gregory B. Kalush Chairman of the Board, Chief Executive Officer and President Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities indicated on April 22, 2002. <Table> <Caption> Name Title ---- ----- /s/ Gregory B. Kalush Chairman of the Board, --------------------------------------- Chief Executive Officer and President Gregory B. Kalush (Principal executive officer) /s/ Steven P. Kovac Chief Financial Officer, Treasurer and --------------------------------------- Vice President of Finance Steven P. Kovac (Principal financial officer) /s/ James F. Halpin Director --------------------------------------- James F. Halpin /s/ Paul N. Hug Director --------------------------------------- Paul N. Hug /s/ Randall D. Ledford Director --------------------------------------- Randall D. Ledford /s/ David H. Segrest Director --------------------------------------- David H. Segrest /s/ S. Thomas Thawley Vice Chairman, Director --------------------------------------- and Secretary S. Thomas Thawley /s/ William R. Voss Director --------------------------------------- William R. Voss </Table> 2