QUODD

Insider Transactions last 24 months for Harvard Bioscience, Inc. - NSDQ: HBIO

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
Duke John D	Chief Executive Officer	03/20/2026	AA	Direct	COM	75,000	$0.00	$0.00	180,000
Frost Mark T	Chief Financial Officer	03/20/2026	AA	Direct	COM	30,000	$0.00	$0.00	47,500
Snider William	Director	03/17/2026	AP	Direct	COM	8,475	$4.85	$41,103.75	32,000
Denelsky Stephen J	Director	03/17/2026	AP	Direct	COM	10,000	$4.87	$48,700.00	21,000
Duke John D	Chief Executive Officer	03/16/2026	AP	Direct	COM	5,000	$5.01	$25,050.00	105,000
Snider William	Director	03/16/2026	AP	Direct	COM	12,525	$4.99	$62,499.75	23,525
Frost Mark T	Chief Financial Officer	03/16/2026	AP	Direct	COM	5,000	$5.00	$25,000.00	17,500
Snider William	Director	12/17/2025	AA	Direct	COM	110,000	$0.00	$0.00	110,000
Denelsky Stephen J	Director	09/05/2025	AA	Direct	COM	110,000	$0.00	$0.00	110,000
Green James W	Director	08/15/2025	DD	Direct	COM	113,366	$0.00	$0.00	2,452,566
Green James W	Director	08/15/2025	DD	Direct	COM	66,036	$0.00	$0.00	2,565,905
Green James W	Director	08/15/2025	DF	Direct	COM	11,540	$0.53	$6,104.66	2,631,968
Green James W	Director	08/15/2025	DD	Direct	COM	119,332	$0.00	$0.00	2,643,508
Green James W	Director	08/15/2025	DF	Direct	COM	33,200	$0.53	$17,562.80	2,762,840
Green James W	Director	08/15/2025	DD	Direct	COM	49,048	$0.00	$0.00	2,796,040
Duke John D	Chief Executive Officer	08/08/2025	AA	Direct	COM	500,000	$0.00	$0.00	1,000,000
Duke John D	Chief Executive Officer	08/08/2025	AA	Direct	COM	500,000	$0.00	$0.00	500,000
Gagnon Robert E.	Director	07/16/2025	AA	Direct	COM	110,000	$0.00	$0.00	110,000
Eade Katherine A.	Director	07/16/2025	AA	Direct	COM	110,000	$0.00	$0.00	421,126
Benson Seth Benjamin	Director	07/16/2025	AA	Direct	COM	110,000	$0.00	$0.00	110,000
Frost Mark T	Interim CFO	05/12/2025	AA	Direct	COM	100,000	$0.00	$0.00	125,000
Green James W	Chief Executive Officer	03/19/2025	DF	Direct	COM	38,413	$0.69	$26,451.19	2,845,088
Cote Jennifer	Chief Financial Officer	03/19/2025	DF	Direct	COM	5,687	$0.69	$3,916.07	159,019
Green James W	Chief Executive Officer	12/31/2024	DD	Direct	COM	145,365	$0.00	$0.00	2,883,501
Cote Jennifer	Chief Financial Officer	12/29/2024	DF	Direct	COM	3,797	$1.98	$7,518.06	160,210

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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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