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HARVARD BIOSCIENCE INC

HBIO Net selling
CIK 0001123494 #4866 in the set updated 17 Sep 2026
Bought (120 mo)
$1.96M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$5.90M
$0.00 on a plan · $3.67M straight out of an exercise
Sold at will
$2.23M
22 of 35 sales
Net
−$3.94M
−$267.08K against sales at will

By person

23 insiders · 90 transactions
4.2×

John Duke holds only 4.2 times base salary in stock. $873.00K of shares against $203.08K in salary for 2025.

Salary from the company's own proxy. The shares are what John Duke last reported holding, valued at $4.85, the price Common Stock was last bought or sold at on the open market here, on 17 Mar 2026.

Insider
Role
Bought
Sold
Net
Holding
Worth
Change
Gagnon Robert E.
Director
$60.78K (3)
$2.44M (12) scheduled
−$2.38M
27,556
$133.65K
Duchemin Jeffrey
Chief Executive Officer
$97.02K (2)
$1.68M (12) scheduled
−$1.58M
464,528
$2.25M
+41.3%
Green James W
Director
$877.27K (16)
$1.45M (6) scheduled
−$567.92K
3,885,380
$18.84M
+160.9%
LOY BERTRAND
Director
$391.89K (14)
+$391.89K
125,041
$606.45K
UVEGES GEORGE
Director
$263.50K (2)
−$263.50K
142,685
$692.02K
+28.4%
EDRICK ALAN I
Director
$131.79K (3)
+$131.79K
273,911
$1.33M
+978.4%
Snider William
Director
$103.60K (2)
+$103.60K
48,556
$235.50K
Eade Katherine A.
Director
$98.83K (1)
+$98.83K
58,669
$284.54K
Loewald Thomas W
Director
$50.52K (1)
+$50.52K
295,311
$1.43M
DENELSKY STEPHEN J
Director
$48.70K (1)
+$48.70K
37,556
$182.15K
Duke John D
Chief Executive Officer
$25.05K (1)
+$25.05K
180,000
$873.00K
Frost Mark T
Chief Financial Officer
$25.00K (1)
+$25.00K
47,500
$230.37K
GREEN DAVID
Director
$14.71K (2)
−$14.71K
1,460,467
$7.08M
+0.6%
Lewis Earl
Director
$52.56K (4)
$55.87K (1)
−$3.31K
477,050
$2.31M
+14.9%
KENNEDY JOHN F
Director
323,344
$1.57M
+46.4%
Rossi Michael A.
Chief Financial Officer
260,540
$1.26M
Sun Yong
VP - Commercial Operations
242,805
$1.18M
+117.5%
Cote Jennifer
Chief Financial Officer
159,019
$771.24K
+356.6%
Olson Kenneth Fletcher
Chief Operating Officer
155,595
$754.64K
+4,170%
Unninayar Kamalam
Chief Financial Officer
73,858
$358.21K
Steele Susan M.
Director
49,400
$239.59K
Singh Yash
Executive Vice President
39,286
$190.54K
Benson Seth Benjamin
Director
27,556
$133.65K

No percentages here. This company's share count has moved by a factor of 9.8 over the window, from 4,552,305 to 44,719,894 shares. A split, a merger or a large issue changes what the company is, and a holding measured at one point in that run is not a fraction of it at another.

Insider
Date
Role
Action
Shares
Price
Amount
Snider William
17 Mar 2026
Director
Buy
8,475
$4.85
$41.10K
DENELSKY STEPHEN J
17 Mar 2026
Director
Buy
10,000
$4.87
$48.70K
Duke John D
16 Mar 2026
Chief Executive Officer
Buy
5,000
$5.01
$25.05K
Snider William
16 Mar 2026
Director
Buy
12,525
$4.99
$62.50K
Frost Mark T
16 Mar 2026
Chief Financial Officer
Buy
5,000
$5.00
$25.00K
Green James W
13 Jun 2024
Chief Executive Officer
Buy
10,000
$2.91
$29.10K
Green James W
6 Jun 2024
Chief Executive Officer
Buy
20,000
$3.07
$61.40K
Green James W
17 Aug 2023
Chief Executive Officer
Buy
25,000
$4.38
$109.50K
Green James W
15 Mar 2023
Chief Executive Officer
Buy
20,000
$2.60
$52.00K
EDRICK ALAN I
15 Mar 2023
Director
Buy
16,192
$2.62
$42.42K
Green James W
14 Mar 2023
Chief Executive Officer
Buy
20,000
$2.67
$53.40K
EDRICK ALAN I
14 Mar 2023
Director
Buy
13,808
$2.67
$36.87K
Green James W
1 Dec 2022
Chief Executive Officer
Buy
15,000
$2.61
$39.15K
Green James W
30 Nov 2022
Chief Executive Officer
Buy
15,000
$2.41
$36.15K
LOY BERTRAND
26 Aug 2022
Director
Buy
9,291
$3.41
$31.68K
LOY BERTRAND
25 Aug 2022
Director
Buy
8,244
$3.34
$27.53K
LOY BERTRAND
24 Aug 2022
Director
Buy
17,291
$3.23
$55.85K
LOY BERTRAND
23 Aug 2022
Director
Buy
8,939
$3.23
$28.87K
LOY BERTRAND
22 Aug 2022
Director
Buy
4,918
$3.16
$15.54K
LOY BERTRAND
19 Aug 2022
Director
Buy
9,608
$3.28
$31.51K
LOY BERTRAND
18 Aug 2022
Director
Buy
1,151
$3.19
$3.67K
Green James W
17 Aug 2022
Chief Executive Officer
Buy
40,000
$3.19
$127.60K
Green James W
15 Jun 2022
Chief Executive Officer
Buy
30,000
$3.71
$111.30K
Green James W
9 May 2022
Chief Executive Officer
Buy
10,000
$3.40
$34.00K
Green James W
6 May 2022
Chief Executive Officer
Buy
30,000
$3.78
$113.40K
EDRICK ALAN I
12 Jun 2020
Director
Buy
20,000
$2.63
$52.50K
Green James W
7 May 2020
Chief Executive Officer
Buy
10,000
$2.53
$25.30K
LOY BERTRAND
13 Nov 2019
Director
Buy
6,100
$2.52
$15.37K
LOY BERTRAND
12 Nov 2019
Director
Buy
10,579
$2.51
$26.55K
Green James W
11 Nov 2019
Chief Executive Officer
Buy indirect
10,000
$2.61
$26.10K
LOY BERTRAND
11 Nov 2019
Director
Buy
12,855
$2.59
$33.29K
LOY BERTRAND
8 Nov 2019
Director
Buy
6,616
$2.64
$17.47K
LOY BERTRAND
13 Sep 2019
Director
Buy
7,372
$3.11
$22.93K
LOY BERTRAND
12 Sep 2019
Director
Buy
11,297
$3.07
$34.68K
LOY BERTRAND
11 Sep 2019
Director
Buy
15,590
$3.01
$46.93K
Loewald Thomas W
20 Aug 2019
Director
Buy
20,000
$2.53
$50.52K
Green James W
16 Aug 2019
Chief Executive Officer
Buy indirect
10,000
$2.49
$24.85K
Eade Katherine A.
9 Aug 2019
Director
Buy
39,915
$2.48
$98.83K
Green James W
29 Aug 2018
Director
Buy
2,500
$5.74
$14.35K
Duchemin Jeffrey
12 Jun 2017
Chief Executive Officer
Buy
22,000
$2.76
$60.72K
Green James W
8 Jun 2017
Director
Buy
7,712
$2.55
$19.67K
Gagnon Robert E.
26 May 2017
Chief Financial Officer
Buy
1,000
$2.33
$2.33K
Lewis Earl
25 May 2017
Director
Buy
7,238
$2.33
$16.86K
Lewis Earl
25 May 2017
Director
Buy
5,000
$2.38
$11.90K
Lewis Earl
24 May 2017
Director
Buy
5,000
$2.37
$11.85K
Lewis Earl
23 May 2017
Director
Buy
5,000
$2.39
$11.95K
Gagnon Robert E.
3 Nov 2016
Chief Financial Officer
Buy
20,000
$2.34
$46.80K
Duchemin Jeffrey
3 Nov 2016
Chief Executive Officer
Buy
15,000
$2.42
$36.30K
Gagnon Robert E.
2 Nov 2016
Chief Financial Officer
Buy
5,000
$2.33
$11.65K

What was left out

Form 4 filings counted 249
Amendments (4/A) skipped 2
Filings about a different issuer 0
Unreadable filings 0
Joint filings 0
Sales on a Rule 10b5-1 plan 0
Sales straight out of an exercise 13
Sales at will 22
Transactions with no price 0
Shares from compensation/vesting 12,898,770
Sales filed before the plan box existed 22
History held since 3 Nov 2016