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Tecogen (TGEN) director Earl Lewis receives stock options on 25,000 shares

(Moderate)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Tecogen Inc. director Earl Lewis reported a stock option grant for 25,000 shares of common stock. The option has an exercise price of $5.17 per share and vests in equal 25% installments each year. It expires on June 26, 2036, and this grant brings his directly held derivative position to 25,000 options.

Positive

  • None.

Negative

  • None.
Insider Lewis Earl
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
Options granted 25,000 options Stock Option (Right to Buy) grant to director
Exercise price $5.17 per share Stock option conversion or exercise price
Underlying shares 25,000 shares Underlying common stock tied to option grant
Expiration date June 26, 2036 Option expiration
Post-grant derivative holdings 25,000 options Total derivative securities following transaction
Stock Option (Right to Buy) financial
"security_title: "Stock Option (Right to Buy)""
Common Stock financial
"underlying_security_title: "Common Stock""
Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.
Grant, award, or other acquisition financial
"transaction_code_description: "Grant, award, or other acquisition""
Vests 25% per year financial
"footnote text: "Vests 25% per year""

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FAQ

What did Tecogen (TGEN) director Earl Lewis report in this Form 4?

Earl Lewis reported receiving a stock option grant for 25,000 Tecogen shares. The options allow him to buy common stock at a fixed price, reflecting equity-based compensation rather than an open-market purchase or sale of existing shares.

What is the exercise price of Earl Lewis’s Tecogen stock options?

The stock options have an exercise price of $5.17 per Tecogen share. This means Lewis can purchase common stock at that price once options vest, regardless of the market price at exercise, subject to the grant’s terms.

How do Earl Lewis’s Tecogen options vest over time?

The options vest at 25% per year according to the footnote. This creates a four-year vesting schedule, encouraging longer-term alignment with Tecogen’s performance as more options become exercisable each year he continues in service.

When do Earl Lewis’s Tecogen stock options expire?

The options expire on June 26, 2036. After that expiration date, any unexercised options become worthless, so the economic value depends on Tecogen’s share price before that time and whether the options are in the money.

How many Tecogen derivative securities does Earl Lewis hold after this grant?

After this grant, Lewis directly holds 25,000 stock options linked to Tecogen common shares. These options represent potential future ownership if exercised and are separate from any existing or future holdings of Tecogen common stock itself.
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*
Lewis Earl

(Last)(First)(Middle)
C/O TECOGEN INC.
76 TREBLE COVE ROAD

(Street)
NORTH BILLERICA MASSACHUSETTS 01862

(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/ Earl R. Lewis06/30/2026
** 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)