QUODD

Insider Transactions last 24 months for Tecogen Inc. - AMEX: TGEN

Transactions
All	Buy	Sell	Option Exercise

Filer's Name	Relationship/ Title	Trans. Date	Trans. Type	Ownership Type	Security Type	Shares	Price	Trans. Value	Total Shares Owned
Lewis Earl	Director	03/27/2026	AP	Direct	COM	5,000	$2.52	$12,596.00	1,011,006
Hirsch Susan B	Director	03/27/2026	AP	Direct	COM	10,000	$2.54	$25,400.00	260,416
Lewis Earl	Director	03/26/2026	AP	Direct	COM	5,000	$2.88	$14,408.50	1,006,006
Whiting John Kimball Iv	General Counsel & Secretary	03/23/2026	AP	Direct	COM	10,000	$2.38	$23,800.00	22,612
Hatsopoulos John	Director	03/20/2026	AM	Direct	COM	50,000	$0.88	$44,000.00	1,038,951
Rangesh Abinand	Chief Executive Officer	03/20/2026	AP	Direct	COM	3,000	$2.30	$6,894.00	67,193
Deschenes Roger P.	CAO	03/20/2026	AP	Direct	COM	10,000	$2.23	$22,300.00	52,962
Rangesh Abinand	Chief Executive Officer	07/24/2025	AA	Direct	COM	53,892	$0.00	$0.00	64,193
Deschenes Roger P.	CAO	07/24/2025	AA	Direct	COM	17,964	$0.00	$0.00	42,962
Whiting John Kimball Iv	General Counsel & Secretary	07/24/2025	AA	Direct	COM	11,976	$0.00	$0.00	12,612
Lafaille Stephen	VP of Business Development	07/24/2025	AA	Direct	COM	11,976	$0.00	$0.00	12,376
Lafaille Stephen	VP of Business Development	06/23/2025	DS	Direct	COM	10,000	$7.25	$72,500.00	400
Lafaille Stephen	VP of Business Development	06/23/2025	AX	Direct	COM	10,000	$1.10	$11,000.00	10,400
Panora Robert A	COO and President	06/16/2025	AX	Direct	COM	52,500	$1.10	$57,750.00	165,223
Panora Robert A	COO and President	06/16/2025	AX	Direct	COM	30,000	$0.71	$21,300.00	112,723
Panora Robert A	COO and President	06/16/2025	AX	Direct	COM	12,723	$0.79	$10,051.17	82,723
Lafaille Stephen	VP of Business Development	06/06/2025	DS	Direct	COM	25,000	$5.98	$149,500.00	400
Lafaille Stephen	VP of Business Development	06/06/2025	AX	Direct	COM	25,000	$1.10	$27,500.00	25,400
Lafaille Stephen	VP of Business Development	06/04/2025	DS	Direct	COM	15,000	$5.00	$75,000.00	400
Lafaille Stephen	VP of Business Development	06/04/2025	AX	Direct	COM	15,000	$0.71	$10,650.00	15,400
Lafaille Stephen	VP of Business Development	06/03/2025	DS	Direct	COM	10,000	$4.88	$48,800.00	400
Lafaille Stephen	VP of Business Development	06/03/2025	AX	Direct	COM	10,000	$0.71	$7,100.00	10,400
Lewis Earl R	Director	05/06/2025	AX	Direct	COM	6,250	$1.10	$6,875.00	1,001,006
Lewis Earl R	Director	05/06/2025	AX	Direct	COM	12,500	$1.20	$15,000.00	994,756
Lewis Earl R	Director	05/06/2025	AX	Direct	COM	15,000	$1.75	$26,250.00	982,256

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Transaction Type Key First letter: A = Acquired, D = Disposed Second letter: A = Grant, award or other acquisition pursuant to Rule 16b-3(d) C = Conversion of derivative security \| D = Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e) \| E = Expiration of short derivative position \| F = Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. \| G = Gift \| H = Expiration (or cancellation) of long derivative position with value received \| I = Discretionary transaction in accordance with Rule 16b-3(f) \| J = Other \| L = Small acquisition under Rule 16a-6 \| M = Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 \| O = Exercise of out-of-the-money derivative security \| P = Open market or private purchase \| S = Open market or private sale \| U = Disposition pursuant to a tender of shares in a change of control transaction \| W = Acquisition or disposition by will or the laws of descent and distribution \| X = Exercise of in-the-money or at-the-money derivative security \| Z = Deposit into or withdrawal from voting trust		Send to Excel

Transaction Type Key
First letter: A = Acquired, D = Disposed
Second letter:
A = Grant, award or other acquisition pursuant to Rule 16b-3(d) C = Conversion of derivative security | D = Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e) | E = Expiration of short derivative position | F = Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3. | G = Gift | H = Expiration (or cancellation) of long derivative position with value received | I = Discretionary transaction in accordance with Rule 16b-3(f) | J = Other | L = Small acquisition under Rule 16a-6 | M = Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 | O = Exercise of out-of-the-money derivative security | P = Open market or private purchase | S = Open market or private sale | U = Disposition pursuant to a tender of shares in a change of control transaction | W = Acquisition or disposition by will or the laws of descent and distribution | X = Exercise of in-the-money or at-the-money derivative security | Z = Deposit into or withdrawal from voting trust

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