STOCK TITAN

Tecogen (TGEN) director Susan Hirsch granted stock options for 25,000 shares

(Moderate)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

TECOGEN INC. director Susan B. Hirsch received a compensation-related stock option grant covering 25,000 shares of common stock. The option has an exercise price of $5.17 per share and vests in equal 25% installments per year, providing potential future ownership if exercised. Following this award, Hirsch holds stock options for 25,000 shares directly.

Positive

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Negative

  • None.
Insider Hirsch Susan B
Role Director
Type Security Shares Price Value
Grant/Award Stock Option (Right to Buy) 25,000 $5.17 $129K
Holdings After Transaction: Stock Option (Right to Buy) — 25,000 shares (Direct)
Footnotes (1)
  1. F1. Vests 25% per year
Option shares granted 25,000 shares Stock Option (Right to Buy) granted to director on June 26, 2026
Exercise price $5.17 per share Conversion or exercise price of granted stock options
Underlying common shares 25,000 shares Common stock underlying the stock option award
Post-grant option holdings 25,000 options Total derivative securities following the reported transaction
Vesting schedule 25% per year Footnote states the option vests 25% per year
Option expiration date June 26, 2036 Expiration date of the stock option grant
Stock Option (Right to Buy) financial
"security_title: Stock Option (Right to Buy)"
Grant, award, or other acquisition financial
"transaction code description: Grant, award, or other acquisition"
exercise price financial
"conversion_or_exercise_price: 5.1700"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
vesting financial
"Footnote: Vests 25% per year"
Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.
expiration date financial
"expiration_date: 2036-06-26T00:00:00.000Z"
The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What insider transaction did TECOGEN INC. (TGEN) director Susan B. Hirsch report?

Susan B. Hirsch reported receiving a stock option grant for 25,000 shares of Tecogen common stock. The award is compensation-related and gives her the right, but not the obligation, to buy shares at a fixed exercise price in the future.

What is the exercise price of Susan B. Hirsch’s Tecogen (TGEN) stock options?

The granted stock options have an exercise price of $5.17 per share. This means Hirsch can buy Tecogen common stock at $5.17 per share once the options vest, regardless of the market price at that time.

How many Tecogen (TGEN) shares are covered by Susan B. Hirsch’s new option grant?

The option grant covers 25,000 shares of Tecogen common stock. These shares are not issued immediately; they may be acquired later if Hirsch chooses to exercise the options once they vest and before they expire.

How do Susan B. Hirsch’s Tecogen (TGEN) stock options vest over time?

The options vest at a rate of 25% per year, according to the filing footnote. This means the right to exercise the 25,000-share grant becomes available in four equal annual installments, aligning with common long-term incentive practices.

When do Susan B. Hirsch’s Tecogen (TGEN) stock options expire?

The options expire on June 26, 2036, as disclosed in the filing. If Hirsch does not exercise vested options by that expiration date, the right to buy Tecogen shares at $5.17 per share will lapse.

Did Susan B. Hirsch buy or sell Tecogen (TGEN) stock in the open market?

The filing reports a grant of stock options, not an open-market trade. Code “A” indicates a grant or award acquisition, so this is compensation rather than a market purchase or sale of Tecogen common shares.
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Hirsch Susan B

(Last)(First)(Middle)
280 OLD SOMERSET ROAD

(Street)
WATCHUNG NEW JERSEY 07069

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
TECOGEN INC. [ TGEN ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/26/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$5.1706/26/2026A25,00006/26/2027(1)06/26/2036Common Stock25,000$5.1725,000D
Explanation of Responses:
1. Vests 25% per year
Remarks:
/s/ Susan F. Hirsch06/30/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)