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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
Green James W
23 Aug 2021
Chief Executive Officer
Sell
48,175
$8.02
$386.36K
Green James W
12 Mar 2021
Chief Executive Officer
Sell
35,000
$5.98
$209.30K
Duchemin Jeffrey
12 Apr 2019
Chief Executive Officer
Sell
400
$4.65
$1.86K
Duchemin Jeffrey
11 Apr 2019
Chief Executive Officer
Sell
12,425
$4.51
$56.04K
Duchemin Jeffrey
10 Apr 2019
Chief Executive Officer
Sell
6,332
$4.50
$28.49K
Gagnon Robert E.
29 Aug 2018
Chief Financial Officer
Sell
8,889
$5.77
$51.29K
Gagnon Robert E.
24 Jul 2018
Chief Financial Officer
Sell
5,570
$5.25
$29.24K
Gagnon Robert E.
23 Jul 2018
Chief Financial Officer
Sell
1,465
$5.25
$7.69K
Gagnon Robert E.
19 Jul 2018
Chief Financial Officer
Sell
1,100
$5.25
$5.78K
Gagnon Robert E.
13 Jul 2018
Chief Financial Officer
Sell
1,062
$5.25
$5.58K
Duchemin Jeffrey
11 Jul 2018
Chief Executive Officer
Sell
14,205
$5.22
$74.15K
Duchemin Jeffrey
10 Jul 2018
Chief Executive Officer
Sell
11,600
$5.38
$62.41K
Duchemin Jeffrey
9 Jul 2018
Chief Executive Officer
Sell
14,195
$5.41
$76.79K
UVEGES GEORGE
14 Mar 2018
Director
Sell
22,250
$4.58
$101.91K
Duchemin Jeffrey
9 Mar 2018
Chief Executive Officer
Sell
7,800
$4.60
$35.88K
Duchemin Jeffrey
8 Mar 2018
Chief Executive Officer
Sell
79,222
$4.52
$358.08K
Gagnon Robert E.
7 Mar 2018
Chief Financial Officer
Sell
97,087
$4.62
$448.54K
UVEGES GEORGE
7 Mar 2018
Director
Sell
35,054
$4.61
$161.60K
Duchemin Jeffrey
12 Jun 2017
Chief Executive Officer
Sell
22,000
$2.66
$58.52K
GREEN DAVID
7 Feb 2017
Director
Sell
3,239
$3.25
$10.53K
GREEN DAVID
6 Feb 2017
Director
Sell
1,288
$3.25
$4.19K
Lewis Earl
6 Dec 2016
Director
Sell
23,088
$2.42
$55.87K

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