Insider Ledger
Repligen Corp. (RGEN) insider buying and SEC filings
Repligen Corp. · CIK 730272
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- Nasdaq
- Industry (SIC)
- Biological Products, (No Diagnostic Substances)
- State of incorporation
- DE
- Fiscal year end
- Dec 31
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$3.5M
Planned sales (10b5-1)
$11.8M
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Oct 5, 2026 | Planned (10b5-1) | Olivier Loeillot (CEO and Director) sold 5,535 shares at about $187.29 ($1.0M), marked as a 10b5-1 plan trade. Holdings down 11% to 45,788 shares. | SEC filing Filed Oct 6, 2026, 4:18 PM ET |
| Sep 24, 2026 | Planned (10b5-1) | Olivier Loeillot (CEO and Director) sold 12,946 shares at $190.00 ($2.5M), marked as a 10b5-1 plan trade. Holdings down 21% to 48,369 shares. | SEC filing Filed Sep 25, 2026 |
| Sep 21, 2026 | Planned (10b5-1) | Olivier Loeillot (CEO and Director) sold 5,426 shares at $180.00 ($977K), marked as a 10b5-1 plan trade. Holdings down 10% to 48,369 shares. | SEC filing Filed Sep 22, 2026 |
| Sep 4, 2026 | Planned (10b5-1) | Olivier Loeillot (CEO and Director) sold 3,035 shares at $165.90 ($504K), marked as a 10b5-1 plan trade. Holdings down 6% to 48,369 shares. | SEC filing Filed Sep 8, 2026 |
| Aug 20, 2026 | Planned (10b5-1) | Olivier Loeillot (CEO and Director) sold 5,426 shares at $180.00 ($977K), marked as a 10b5-1 plan trade. Holdings down 9% to 54,246 shares. | SEC filing Filed Aug 21, 2026 |
| Jul 16, 2026 | Planned (10b5-1) | Jason K Garland (CFO) sold 530 shares at $150.00 ($80K), marked as a 10b5-1 plan trade. Holdings down 3% to 18,829 shares. | SEC filing Filed Jul 17, 2026 |
| Jun 25, 2026 | Planned (10b5-1) | Jason K Garland (CFO) sold 733 shares at $145.00 ($106K), marked as a 10b5-1 plan trade. Holdings down 4% to 19,359 shares. | SEC filing Filed Jun 26, 2026 |
| Apr 21, 2026 | Planned (10b5-1) | Olivier Loeillot (CEO and Director) sold 3,832 shares at $140.00 ($536K), marked as a 10b5-1 plan trade. Holdings down 7% to 54,246 shares. | SEC filing Filed Apr 22, 2026 |
| Dec 17, 2025 | Sale | Karen A. Dawes (Director) sold 275 shares at $161.00 ($44K). Holdings down <1% to 91,821 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Dec 18, 2025 |
| Nov 25, 2025 | Planned (10b5-1) | Olivier Loeillot (CEO and Director) sold 7,041 shares at $170.00 ($1.2M), marked as a 10b5-1 plan trade. Holdings down 16% to 35,898 shares. | SEC filing Filed Nov 26, 2025 |
| Nov 18, 2025 | Sale | James Bylund (President / COO) sold 2,191 shares at about $151.21 ($331K). Holdings down 9% to 21,520 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 19, 2025 |
| Nov 13, 2025 | Sale | Anthony Hunt (Director) sold 20,000 shares at about $154.61 ($3.1M). Holdings down 20% to 80,743 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 14, 2025 |
| Nov 12, 2025 | Planned (10b5-1) | Anthony Hunt (Director) sold 25,000 shares at about $156.88 ($3.9M), marked as a 10b5-1 plan trade. Holdings down 20% to 100,743 shares. | SEC filing Filed Nov 13, 2025 |
36 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
| Filed | Items | Tag | Source |
|---|---|---|---|
| Oct 30, 2026, 6:04 AM ET 8-K | Unregistered share sale (Item 3.02) Other event (Item 8.01) | SEC filing |
Red flags are objective triggers only: the item or form filed, never an opinion.
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