RGEN
Repligen Corporation$176.94-12.70 (-6.73%)Prev Close$188.64·MCap$11.23B·P/E195.49·Vol3.93M·Yield—
▲
Buys (12M)
0
$0.00
▼
Sells (12M)
13
$13.67M
◆
Net Activity
Net Seller
$13.67M
●
Active Insiders
5
last 12 mo
Over the past 12 months, insider activity at Repligen Corporation (RGEN) has been exclusively selling, with 0 insider purchases totaling $0.00 and 13 insider sales totaling $13.67M. The most recent insider transaction was by Loeillot Olivier (director, officer: Chief Executive Officer), who sold $1.04M worth of shares on Oct 6, 2026. Repligen Corporation operates in the Healthcare sector, within the Medical - Instruments & Supplies industry, with a market cap of $11.23B.
RGEN Insider Trading Activity
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Oct 6, 2026 | Loeillot Olivier | director, officer: Chief Executive Officer | Sell | 5,535 | $187.29 | $1.04M | 45,788 |
| Sep 25, 2026 | Loeillot Olivier | director, officer: Chief Executive Officer | Sell | 4,542 | $190.00 | $863.0K | 48,369 |
| Sep 22, 2026 | Loeillot Olivier | director, officer: Chief Executive Officer | Sell | 5,426 | $180.00 | $976.7K | 48,369 |
| Sep 8, 2026 | Loeillot Olivier | director, officer: Chief Executive Officer | Sell | 3,035 | $165.90 | $503.5K | 48,369 |
| Aug 21, 2026 | Loeillot Olivier | director, officer: Chief Executive Officer | Sell | 5,426 | $180.00 | $976.7K | 54,246 |
| Jul 17, 2026 | Garland Jason K | officer: CFO | Sell | 530 | $150.00 | $79.5K | 18,829 |
| Jun 26, 2026 | Garland Jason K | officer: CFO | Sell | 733 | $145.00 | $106.3K | 19,359 |
| Apr 22, 2026 | Loeillot Olivier | director, officer: Chief Executive Officer | Sell | 3,832 | $140.00 | $536.5K | 54,246 |
| Dec 17, 2025 | DAWES KAREN A | Director | Sell | 275 | $161.00 | $44.3K | 0 |
| Nov 25, 2025 | Loeillot Olivier | Chief Executive Officer | Sell | 7,041 | $170.00 | $1.20M | 0 |
| Nov 18, 2025 | Bylund James | Chief Operating Officer | Sell | 2,191 | $151.21 | $331.3K | 0 |
| Nov 13, 2025 | Hunt Anthony | Director | Sell | 20,000 | $154.61 | $3.09M | 0 |
| Nov 12, 2025 | Hunt Anthony | Director | Sell | 25,000 | $156.88 | $3.92M | 0 |
| Oct 2, 2025 | Loeillot Olivier | Chief Executive Officer | Sell | 1,248 | $145.23 | $181.2K | 0 |
| Sep 25, 2025 | Garland Jason K | CFO | Sell | 412 | $121.68 | $50.1K | 0 |
| Sep 10, 2025 | Hunt Anthony | Director | Sell | 29,111 | $120.52 | $3.51M | 0 |
| Sep 3, 2025 | Loeillot Olivier | Chief Executive Officer | Sell | 2,506 | $116.18 | $291.1K | 0 |
| Aug 8, 2025 | Madaus Martin D | Director | Buy | 1,800 | $112.13 | $201.8K | 0 |
| May 15, 2025 | Hunt Anthony | Director | Sell | 26,447 | $123.71 | $3.27M | 0 |
| Apr 1, 2025 | Bylund James | Chief Operating Officer | Sell | 454 | $128.50 | $58.3K | 0 |
| Mar 17, 2025 | Hunt Anthony | Director | Sell | 26,756 | $152.51 | $4.08M | 0 |
| Mar 17, 2025 | Pax Margaret | Director | Buy | 250 | $150.69 | $37.7K | 0 |
| Mar 13, 2025 | Bylund James | Chief Operating Officer | Sell | 175 | $142.44 | $24.9K | 0 |
| Mar 3, 2025 | Bylund James | Chief Operating Officer | Sell | 1,239 | $155.38 | $192.5K | 0 |
| Mar 3, 2025 | Hunt Anthony | Director | Sell | 10,142 | $155.38 | $1.58M | 0 |
| Mar 3, 2025 | KURIYEL RALF | Senior VP, R&D | Sell | 386 | $155.38 | $60.0K | 0 |
| Feb 27, 2025 | Bylund James | Chief Operating Officer | Sell | 1,285 | $156.54 | $201.2K | 0 |
| Feb 27, 2025 | Garland Jason K | CFO | Sell | 316 | $156.54 | $49.5K | 0 |
| Feb 27, 2025 | Hunt Anthony | Director | Sell | 2,825 | $156.54 | $442.2K | 0 |
| Feb 27, 2025 | KURIYEL RALF | Senior VP, R&D | Sell | 391 | $156.54 | $61.2K | 0 |
| Feb 27, 2025 | Loeillot Olivier | Chief Executive Officer | Sell | 343 | $156.54 | $53.7K | 0 |
| Feb 24, 2025 | Bylund James | Chief Operating Officer | Sell | 543 | $164.74 | $89.5K | 0 |
| Feb 24, 2025 | Hunt Anthony | Director | Sell | 2,380 | $164.74 | $392.1K | 0 |
| Feb 24, 2025 | KURIYEL RALF | Senior VP, R&D | Sell | 275 | $164.74 | $45.3K | 0 |
| Nov 22, 2024 | Hunt Anthony | Sell | 24,246 | $139.67 | $3.39M | 139,840 | |
| Sep 12, 2024 | Hunt Anthony | Sell | 22,191 | $145.37 | $3.23M | 160,536 | |
| Aug 5, 2024 | KURIYEL RALF | Senior VP, R&D | Sell | 7,148 | $159.35 | $1.14M | 12,288-37% |
| Aug 1, 2024 | KURIYEL RALF | Senior VP, R&D | Sell | 4,465 | $165.67 | $739.7K | 19,261 |
| Jun 14, 2024 | BARTHELEMY NICOLAS | Buy | 1,200 | $125.45 | $150.5K | 4,668+35% | |
| Jun 14, 2024 | Hunt Anthony | Chief Executive Officer | Buy | 2,000 | $124.08 | $248.2K | 165,177 |
| Jun 14, 2024 | Madaus Martin D | Buy | 1,615 | $124.94 | $201.8K | 4,613+54% | |
| May 22, 2024 | Hunt Anthony | Chief Executive Officer | Sell | 20,072 | $168.26 | $3.38M | 178,975 |
| Mar 12, 2024 | KURIYEL RALF | Senior VP, R&D | Sell | 3,517 | $193.73 | $681.3K | 24,260 |
| Mar 11, 2024 | Hunt Anthony | Chief Executive Officer | Sell | 16,707 | $197.44 | $3.30M | 198,579 |
| Feb 28, 2024 | DAWES KAREN A | Sell | 1,000 | $193.35 | $193.3K | 87,367 | |
| Feb 26, 2024 | Bylund James | Chief Operating Officer | Sell | 4,373 | $198.08 | $866.2K | 14,135 |
| Nov 13, 2023 | Gebski Christine | See Remarks | Sell | 3,788 | $147.13 | $557.3K | 28,787 |
| Aug 30, 2023 | DAWES KAREN A | Sell | 850 | $171.38 | $145.7K | 83,741 | |
| May 8, 2023 | Madaus Martin D | Director | Buy | 1,500 | $158.84 | $238.3K | 1,611New Position |
| Feb 17, 2023 | Snodgres Jon | Chief Financial Officer | Sell | 5,647 | $200.00 | $1.13M | 29,325 |
Showing 1–50 of 90
1 / 2
RGEN Insider Buying Activity
The following table shows recent insider purchases of Repligen Corporation (RGEN) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Aug 8, 2025 | Madaus Martin D | Director | Buy | 1,800 | $112.13 | $201.8K | 0 |
| Mar 17, 2025 | Pax Margaret | Director | Buy | 250 | $150.69 | $37.7K | 0 |
| Jun 14, 2024 | BARTHELEMY NICOLAS | Buy | 1,200 | $125.45 | $150.5K | 4,668+35% | |
| Jun 14, 2024 | Hunt Anthony | Chief Executive Officer | Buy | 2,000 | $124.08 | $248.2K | 165,177 |
| Jun 14, 2024 | Madaus Martin D | Buy | 1,615 | $124.94 | $201.8K | 4,613+54% | |
| May 8, 2023 | Madaus Martin D | Director | Buy | 1,500 | $158.84 | $238.3K | 1,611New Position |
RGEN Insider Selling Activity
The following table shows recent insider sales of Repligen Corporation (RGEN) stock reported via SEC Form 4 filings.
| Date | Insider | Role | Type | Shares | Avg Price | Value | Shares After |
|---|---|---|---|---|---|---|---|
| Oct 6, 2026 | Loeillot Olivier | director, officer: Chief Executive Officer | Sell | 5,535 | $187.29 | $1.04M | 45,788 |
| Sep 25, 2026 | Loeillot Olivier | director, officer: Chief Executive Officer | Sell | 4,542 | $190.00 | $863.0K | 48,369 |
| Sep 22, 2026 | Loeillot Olivier | director, officer: Chief Executive Officer | Sell | 5,426 | $180.00 | $976.7K | 48,369 |
| Sep 8, 2026 | Loeillot Olivier | director, officer: Chief Executive Officer | Sell | 3,035 | $165.90 | $503.5K | 48,369 |
| Aug 21, 2026 | Loeillot Olivier | director, officer: Chief Executive Officer | Sell | 5,426 | $180.00 | $976.7K | 54,246 |
| Jul 17, 2026 | Garland Jason K | officer: CFO | Sell | 530 | $150.00 | $79.5K | 18,829 |
| Jun 26, 2026 | Garland Jason K | officer: CFO | Sell | 733 | $145.00 | $106.3K | 19,359 |
| Apr 22, 2026 | Loeillot Olivier | director, officer: Chief Executive Officer | Sell | 3,832 | $140.00 | $536.5K | 54,246 |
| Dec 17, 2025 | DAWES KAREN A | Director | Sell | 275 | $161.00 | $44.3K | 0 |
| Nov 25, 2025 | Loeillot Olivier | Chief Executive Officer | Sell | 7,041 | $170.00 | $1.20M | 0 |
| Nov 18, 2025 | Bylund James | Chief Operating Officer | Sell | 2,191 | $151.21 | $331.3K | 0 |
| Nov 13, 2025 | Hunt Anthony | Director | Sell | 20,000 | $154.61 | $3.09M | 0 |
| Nov 12, 2025 | Hunt Anthony | Director | Sell | 25,000 | $156.88 | $3.92M | 0 |
| Oct 2, 2025 | Loeillot Olivier | Chief Executive Officer | Sell | 1,248 | $145.23 | $181.2K | 0 |
| Sep 25, 2025 | Garland Jason K | CFO | Sell | 412 | $121.68 | $50.1K | 0 |
| Sep 10, 2025 | Hunt Anthony | Director | Sell | 29,111 | $120.52 | $3.51M | 0 |
| Sep 3, 2025 | Loeillot Olivier | Chief Executive Officer | Sell | 2,506 | $116.18 | $291.1K | 0 |
| May 15, 2025 | Hunt Anthony | Director | Sell | 26,447 | $123.71 | $3.27M | 0 |
| Apr 1, 2025 | Bylund James | Chief Operating Officer | Sell | 454 | $128.50 | $58.3K | 0 |
| Mar 17, 2025 | Hunt Anthony | Director | Sell | 26,756 | $152.51 | $4.08M | 0 |
| Mar 13, 2025 | Bylund James | Chief Operating Officer | Sell | 175 | $142.44 | $24.9K | 0 |
| Mar 3, 2025 | Bylund James | Chief Operating Officer | Sell | 1,239 | $155.38 | $192.5K | 0 |
| Mar 3, 2025 | Hunt Anthony | Director | Sell | 10,142 | $155.38 | $1.58M | 0 |
| Mar 3, 2025 | KURIYEL RALF | Senior VP, R&D | Sell | 386 | $155.38 | $60.0K | 0 |
| Feb 27, 2025 | Bylund James | Chief Operating Officer | Sell | 1,285 | $156.54 | $201.2K | 0 |
| Feb 27, 2025 | Garland Jason K | CFO | Sell | 316 | $156.54 | $49.5K | 0 |
| Feb 27, 2025 | Hunt Anthony | Director | Sell | 2,825 | $156.54 | $442.2K | 0 |
| Feb 27, 2025 | KURIYEL RALF | Senior VP, R&D | Sell | 391 | $156.54 | $61.2K | 0 |
| Feb 27, 2025 | Loeillot Olivier | Chief Executive Officer | Sell | 343 | $156.54 | $53.7K | 0 |
| Feb 24, 2025 | Bylund James | Chief Operating Officer | Sell | 543 | $164.74 | $89.5K | 0 |
| Feb 24, 2025 | Hunt Anthony | Director | Sell | 2,380 | $164.74 | $392.1K | 0 |
| Feb 24, 2025 | KURIYEL RALF | Senior VP, R&D | Sell | 275 | $164.74 | $45.3K | 0 |
| Nov 22, 2024 | Hunt Anthony | Sell | 24,246 | $139.67 | $3.39M | 139,840 | |
| Sep 12, 2024 | Hunt Anthony | Sell | 22,191 | $145.37 | $3.23M | 160,536 | |
| Aug 5, 2024 | KURIYEL RALF | Senior VP, R&D | Sell | 7,148 | $159.35 | $1.14M | 12,288-37% |
| Aug 1, 2024 | KURIYEL RALF | Senior VP, R&D | Sell | 4,465 | $165.67 | $739.7K | 19,261 |
| May 22, 2024 | Hunt Anthony | Chief Executive Officer | Sell | 20,072 | $168.26 | $3.38M | 178,975 |
| Mar 12, 2024 | KURIYEL RALF | Senior VP, R&D | Sell | 3,517 | $193.73 | $681.3K | 24,260 |
| Mar 11, 2024 | Hunt Anthony | Chief Executive Officer | Sell | 16,707 | $197.44 | $3.30M | 198,579 |
| Feb 28, 2024 | DAWES KAREN A | Sell | 1,000 | $193.35 | $193.3K | 87,367 | |
| Feb 26, 2024 | Bylund James | Chief Operating Officer | Sell | 4,373 | $198.08 | $866.2K | 14,135 |
| Nov 13, 2023 | Gebski Christine | See Remarks | Sell | 3,788 | $147.13 | $557.3K | 28,787 |
| Aug 30, 2023 | DAWES KAREN A | Sell | 850 | $171.38 | $145.7K | 83,741 | |
| Feb 17, 2023 | Snodgres Jon | Chief Financial Officer | Sell | 5,647 | $200.00 | $1.13M | 29,325 |
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