There have been 50 recent insider transactions recorded for Repligen Corporation (RGEN), including 22 buys and 26 sells. Total insider buying was valued at $14.57M and total insider selling at $7.71M.
Notable insiders with recent activity include Kuriyel Ralf, Garland Jason K, Bylund James. Insider transactions can provide insights into how company leadership views the stock's valuation and future prospects.
Insider Transactions — RGEN
| Date |
Name |
Role |
Transaction |
Shares |
Avg. Price |
Value |
Shares Owned |
| 2026-03-05 |
Kuriyel Ralf |
Senior VP, R&d |
RSU Award |
5,669 |
$141.91 |
$804.49K |
5,669 |
| 2026-03-05 |
Garland Jason K |
CFO |
RSU Award |
8,315 |
$141.91 |
$1.18M |
8,315 |
| 2026-03-05 |
Bylund James |
Chief Operating Officer |
RSU Award |
8,315 |
$141.91 |
$1.18M |
8,315 |
| 2026-03-05 |
Loeillot Olivier |
Chief Executive Officer |
RSU Award |
25,890 |
$141.91 |
$3.67M |
25,890 |
| 2026-03-04 |
Kuriyel Ralf |
Senior VP, R&d |
Tax Withholding of RSU |
42 |
$125.84 |
$5.29K |
14,778 |
| 2026-03-04 |
Bylund James |
Chief Operating Officer |
Tax Withholding of RSU |
62 |
$125.84 |
$7.8K |
17,672 |
| 2026-03-02 |
Hunt Anthony |
Director |
Tax Withholding of RSU |
9,897 |
$124.97 |
$1.24M |
89,062 |
| 2026-03-02 |
Kuriyel Ralf |
Senior VP, R&d |
Tax Withholding of RSU |
923 |
$124.97 |
$115.35K |
14,695 |
| 2026-03-02 |
Garland Jason K |
CFO |
Tax Withholding of RSU |
715 |
$124.97 |
$89.35K |
12,341 |
| 2026-03-02 |
Bylund James |
Chief Operating Officer |
Tax Withholding of RSU |
2,433 |
$124.97 |
$304.05K |
17,609 |
| 2026-03-02 |
Loeillot Olivier |
Chief Executive Officer |
Tax Withholding of RSU |
1,610 |
$124.97 |
$201.2K |
33,944 |
| 2026-03-02 |
Douglass Brian Robb |
Chief Product Officer |
Tax Withholding of RSU |
221 |
$124.97 |
$27.62K |
8,319 |
| 2026-02-27 |
Kuriyel Ralf |
Senior VP, R&d |
Tax Withholding of RSU |
444 |
$128.73 |
$57.16K |
15,618 |
| 2026-02-27 |
Garland Jason K |
CFO |
Tax Withholding of RSU |
327 |
$128.73 |
$42.09K |
13,056 |
| 2026-02-27 |
Bylund James |
Chief Operating Officer |
Tax Withholding of RSU |
1,478 |
$128.73 |
$190.26K |
20,042 |
| 2026-02-27 |
Loeillot Olivier |
Chief Executive Officer |
Tax Withholding of RSU |
344 |
$128.73 |
$44.28K |
35,554 |
| 2025-12-31 |
Douglass Brian Robb |
Chief Product Officer |
Unknown |
7,020 |
$167.72 |
$1.18M |
- |
| 2025-12-31 |
Douglass Brian Robb |
Chief Product Officer |
RSU Award |
2,143 |
$163.86 |
$351.15K |
2,143 |
| 2025-12-17 |
Dawes Karen A |
Director |
Informative Sell |
275 |
$161.00 |
$44.28K |
91,821 |
| 2025-12-16 |
Muir Glenn P |
Director |
Option Exercise |
3,366 |
$26.12 |
$87.92K |
3,366 |
| 2025-12-04 |
Hunt Anthony |
Director |
Other (Sell) |
2,000 |
- |
- |
98,959 |
| 2025-11-25 |
Loeillot Olivier |
Chief Executive Officer |
Informative Sell |
7,041 |
$170.00 |
$1.2M |
35,898 |
| 2025-11-18 |
Bylund James |
Chief Operating Officer |
Informative Sell |
2,191 |
$151.21 |
$331.3K |
21,520 |
| 2025-11-13 |
Hunt Anthony |
Director |
Option Exercise |
2,952 |
$33.87 |
$99.98K |
14,760 |
| 2025-11-12 |
Hunt Anthony |
Director |
Informative Sell |
464 |
$158.51 |
$73.55K |
100,743 |
| 2025-10-02 |
Loeillot Olivier |
Chief Executive Officer |
Tax Withholding of RSU |
1,248 |
$145.23 |
$181.25K |
42,939 |
| 2025-09-25 |
Garland Jason K |
CFO |
Tax Withholding of RSU |
412 |
$121.68 |
$50.13K |
13,383 |
| 2025-09-10 |
Hunt Anthony |
Director |
Informative Sell |
2,179 |
$122.23 |
$266.34K |
100,743 |
| 2025-09-03 |
Loeillot Olivier |
Chief Executive Officer |
Tax Withholding of RSU |
2,506 |
$116.18 |
$291.15K |
44,187 |
| 2025-09-02 |
Hughes Violetta |
Chief Accounting Officer |
RSU Award |
3,914 |
$120.69 |
$472.38K |
3,914 |
| 2025-09-01 |
Hughes Violetta |
Officer |
Unknown |
- |
- |
- |
- |
| 2025-08-08 |
Madaus Martin D |
Director |
Informative Buy |
1,800 |
$112.13 |
$201.83K |
1,800 |
| 2025-05-15 |
Hunt Anthony |
Director |
Informative Sell |
7 |
$127.00 |
$889.00 |
109,854 |
| 2025-05-15 |
Muir Glenn P |
Director |
RSU Award |
1,800 |
$123.26 |
$221.87K |
1,800 |
| 2025-05-15 |
Dawes Karen A |
Director |
RSU Award |
1,800 |
$123.26 |
$221.87K |
1,800 |
| 2025-05-15 |
Madaus Martin D |
Director |
RSU Award |
1,800 |
$123.26 |
$221.87K |
1,800 |
| 2025-05-15 |
Eglinton Manner Carrie |
Director |
RSU Award |
1,800 |
$123.26 |
$221.87K |
1,800 |
| 2025-05-15 |
Konstantinov Konstantin |
Director |
RSU Award |
1,800 |
$123.26 |
$221.87K |
1,800 |
| 2025-05-15 |
Mhatre Rohin |
Director |
RSU Award |
1,800 |
$123.26 |
$221.87K |
1,800 |
| 2025-05-15 |
Pax Margaret |
Director |
RSU Award |
1,800 |
$123.26 |
$221.87K |
1,800 |
| 2025-05-15 |
Barthelemy Nicolas |
Director |
RSU Award |
1,800 |
$123.26 |
$221.87K |
1,800 |
| 2025-04-01 |
Bylund James |
Chief Operating Officer |
Tax Withholding of RSU |
454 |
$128.50 |
$58.34K |
23,711 |
| 2025-03-17 |
Pax Margaret |
Director |
Informative Buy |
250 |
$150.69 |
$37.67K |
1,043 |
| 2025-03-17 |
Hunt Anthony |
Director |
Option Exercise (Sell) |
21,756 |
$59.52 |
$1.29M |
- |
| 2025-03-13 |
Bylund James |
Chief Operating Officer |
Tax Withholding of RSU |
175 |
$142.44 |
$24.93K |
24,165 |
| 2025-03-03 |
Hunt Anthony |
Director |
Tax Withholding of RSU |
10,142 |
$155.38 |
$1.58M |
136,301 |
| 2025-03-03 |
Kuriyel Ralf |
Senior VP, R&d |
RSU Award |
4,542 |
$155.38 |
$705.74K |
4,542 |
| 2025-03-03 |
Garland Jason K |
CFO |
RSU Award |
6,056 |
$155.38 |
$940.98K |
6,056 |
| 2025-03-03 |
Bylund James |
Chief Operating Officer |
RSU Award |
6,056 |
$155.38 |
$940.98K |
6,056 |
| 2025-03-03 |
Loeillot Olivier |
Chief Executive Officer |
RSU Award |
13,627 |
$155.38 |
$2.12M |
13,627 |
■ Informative Buy/Sell — open market transaction (most significant)
■ Uninformative Buy — award, option exercise, conversion
■ Uninformative Sell — tax withholding, award vest sale
■ Neutral — gift, trust, expiry
