Tecogen INC Form 4 insider transactions

John Kimball Whiting IV, General Counsel & Secretary of TECOGEN INC., reported the acquisition of 19,342 shares of common stock via a Restricted Stock Award.

TECOGEN INC. reports that VP of Business Development, Stephen Lafaille, acquired 29,013 shares of common stock on June 26, 2026, under a restricted stock award plan.

Roger P. Deschenes, CAO of TECOGEN INC., acquired 29,013 shares of common stock on June 26, 2026, under a restricted stock award plan.

TECOGEN INC. reports that COO and President Robert Panora acquired 9,671 shares of common stock and was granted 26,041 stock options.

Tecogen Inc. executive Abinand Rangesh reports acquisition of common stock and stock options under incentive plans.

Director Susan B. Hirsch of TECOGEN INC. acquired 25,000 stock options with an exercise price of $5.17, vesting over four years.

Tecogen Inc. director John M. Albertine acquired 25,000 stock options with an exercise price of $5.17, vesting over four years.

Tecogen Inc. director Earl Lewis acquired 25,000 stock options with an exercise price of $5.17, vesting over four years.

TECOGEN INC. Director Ahmed Ghoniem acquired 25,000 stock options with an exercise price of $5.17, vesting over four years.

Director Angelina Galiteva acquired 25,000 stock options for TECOGEN Inc. (TGEN) with an exercise price of $5.17, vesting over four years.

TECOGEN INC. Director Ahmed Ghoniem reported a transaction involving 12,723 shares of common stock on April 24, 2026.

Director Susan B. Hirsch acquired 5,000 shares of common stock in Tecogen Inc. (TGEN) on April 13, 2026.

Tecogen Inc. Director Susan B. Hirsch acquired 10,000 shares of common stock at $2.54 per share, increasing her beneficial ownership.

Tecogen Inc. Director and 10% owner Earl Lewis acquired 5,000 shares of common stock for approximately $12,596, increasing his direct beneficial ownership.

TECOGEN Inc. Director and 10% owner Earl Lewis acquired 5,000 shares of common stock for $2.8817 per share, increasing his beneficial ownership.

Tecogen Inc.'s General Counsel and Secretary, John Kimball Whiting IV, purchased 10,000 shares of common stock at $2.38 per share.

Tecogen Inc.'s Chief Accounting Officer, Roger P. Deschenes, reported a planned purchase of 10,000 shares of common stock under a Rule 10b5-1 plan.

Tecogen Inc.'s CEO and CFO, Abinand Rangesh, increased his beneficial ownership by purchasing 3,000 shares of common stock for $2.298 per share.

TECOGEN Inc. Director John Hatsopoulos exercised 50,000 stock options at $0.88 per share, increasing his direct common stock ownership.

Tecogen Inc. Director John M. Albertine was granted 25,000 stock options with an exercise price of $8.35, vesting annually over four years.

Stephen Lafaille, VP of Business Development at Tecogen Inc., was granted 11,976 restricted shares and 24,075 stock options as part of his compensation.

Tecogen Inc.'s General Counsel and Secretary, John Kimball Whiting IV, was granted 11,976 shares of restricted common stock and 24,075 stock options on July 24, 2025.

Tecogen Inc.'s Chief Accounting Officer, Roger P. Deschenes, was granted 17,964 shares of restricted common stock and options to purchase 12,063 shares of common stock, aligning executive incentives with shareholder interests.

TECOGEN Inc.'s Chief Executive Officer and Chief Financial Officer, Abinand Rangesh, was granted 53,892 shares of common stock and 36,123 stock options, aligning executive compensation with company performance.

TECOGEN Inc. Director Susan B. Hirsch was granted 25,000 stock options with an exercise price of $8.35, vesting annually over four years.

Tecogen Inc. Director Ahmed Ghoniem acquired 25,000 stock options with an exercise price of $8.35, vesting annually over four years.

TECOGEN Inc. Director Earl R. Lewis was granted 25,000 stock options with an exercise price of $8.35, vesting annually over four years, as part of a pre-arranged Rule 10b5-1 plan.

Tecogen Inc. director Angelina Galiteva was granted 25,000 stock options with an exercise price of $8.35, vesting annually over four years.

Tecogen Inc.'s Chief Operating Officer and President, Robert A. Panora, filed an amended Form 4 detailing the exercise of stock options and subsequent sales of common stock primarily to cover tax liabilities.

Tecogen Inc.'s Chief Operating Officer and President, Robert A. Panora, exercised 70,000 stock options at $0.71 per share, acquiring common stock and signaling confidence in the company's future.