Principal Shareholders PRINCIPAL STOCKHOLDERS The following table sets forth information known to us regarding the beneficial ownership of our common stock as of November 30, 2000, and as adjusted to reflect the sale of the common stock offered hereby, by: . each stockholder who is known by us to beneficially own more than 5% of common stock; . our Chairman and our four other most highly compensated executive officers; . each of our directors; and . all of our executive officers and directors as a group. Percent Beneficial Percent Owned Ownership Prior Owned Prior After Stockholder to Offering(1) to Offering Offering ----------- --------------- ----------- -------- Dr. Valentin P. Gapontsev (2)............ 30,053,000 76% Hon. John H. Dalton...................... 135,000 * Dr. Eugene Shcherbakov (3)............... 300,000 * Timothy P. V. Mammen (4)................. 62,500 * John Geagea.............................. 0 * Dr. Denis Gapontsev (5).................. 2,500,000 6 Dr. William F. Krupke (6)................ 12,500 * Robert A. Blair.......................... 490,000 1 Michael C. Child (7)..................... 3,704 * IP Fibre Devices Ltd..................... 11,150,000 28 Entities affiliated with TA Associates, Inc (8)................................. 2,000,000 5 All directors and executive officers as a group (9 persons)....................... 35,494,204 89 -------- * represents less than 1% (1) The number of shares beneficially owned and the percentage of share outstanding are based on (a) 39,683,934 shares outstanding as of November 30, 2000 and assuming the conversion of 4,300,000 shares of our Series A and Series B preferred stock (b) shares outstanding after completion of this offering, assuming no exercise of the underwriters' over-allotment option. Beneficial ownership is determined in accordance with the rules of the SEC and generally includes voting or investment power with respect to securities. All shares of common stock subject to options exercisable within 60 days following September 30, 2000 are deemed to be outstanding and beneficially owned by the person holding those options for the purpose of computing the number of shares beneficially owned and the percentage of ownership of that person. They are not, however, deemed to be outstanding and beneficially owned for the purpose of computing the percentage ownership of any other person. Except as indicated in the other footnotes to the table and subject to applicable community property laws, based on information provided by the persons named in the table, these persons have sole voting and investment power with respect to all shares of the common stock shown as beneficially owned by them. Unless otherwise noted below, the address of each of the individuals named above is c/o IPG Photonics Corporation, P.O. Box 519, 660 Main Street, Sturbridge, MA 01566. (2) Excludes shares beneficially owned by Dr. Denis Gapontsev, for which Dr. Valentin Gapontsev disclaims beneficial ownership. Includes all shares beneficially owned by IP Fibre Devices, of which Dr. Valentin Gapontsev owns 53% of its ordinary shares. (3) Excludes shares beneficially owned by IP Fibre Devices of which Dr. Shcherbakov owns 8% of its ordinary shares, for which he disclaims beneficial ownership. (4) Includes 62,500 shares of common stock issuable upon exercise of options that are exercisable within sixty days of September 30, 2000. Excludes shares beneficially owned by Peter Mammen, for which Timothy Mammen disclaims beneficial ownership. (5) Excludes shares beneficially owned by Dr. Valentin Gapontsev, for which Dr. Denis Gapontsev disclaims beneficial ownership. Excludes shares beneficially owned by IP Fibre Devices of which Dr. Denis Gapontsev owns 15% of its ordinary shares, for which he disclaims beneficial ownership. (6) Includes 12,500 shares of common stock beneficially owned by Dr. Krupke under a stock option granted to him for service as a member of our National Advisory Board. (7) Mr. Child disclaims beneficial ownership of all shares held by affiliates of TA Associates, Inc. of which Mr. Child is a Managing Director, except to the extent of 3,704 shares of common stock in which he has an ownership interest through TA Investors LLC. (8) Includes 1,028,000 shares held by TA IX, L.P., 480,000 shares held by TA/Advent VIII L.P., 444,480 shares held by TA/Atlantic and Pacific IV L.P., 17,360 shares held by TA Executives Fund LLC and 30,160 shares held by TA Investors LLC. TA IX, L.P., TA/Advent VIII L.P., TA/Atlantic and Pacific IV L.P., TA Executives Fund LLC and TA Investors LLC are part of an affiliated group of investment partnerships. The general partner of TA/Advent VIII L.P. is TA Associates VIII LLC. In such capacity, TA Associates, Inc., through an executive committee, exercises sole voting and investment power with respect to all shares held of record by the named investment partnerships; individually, no stockholder, director or officer of TA Associates, Inc., is deemed to have or share such voting or investment power. The address of TA Associates, Inc. is 125 High Street, High Street Tower, Suite 2500, Boston, MA 02110. |