RGEN — REPLIGEN CORP
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
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Measured signals that fired on RGEN
| date | signal | measured base rate |
|---|---|---|
| 2026-08-19 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-08-11 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-08-06 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-29 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-15 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-06-30 | Fair value gap, bearish structure | -0.45% over 21 days · t = -3.29 · n = 108,591 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-20 | Loeillot Olivier Chief Executive Officer | Open-market sale 10b5-1 plan | 5.4K | 180.00 | 976.7K |
| 2026-08-20 | Loeillot Olivier Chief Executive Officer | Option exercise 10b5-1 plan | 5.4K | 141.79 | 769.4K |
| 2026-07-16 | Garland Jason K CFO | Open-market sale 10b5-1 plan | 530 | 150.00 | 79.5K |
| 2026-06-25 | Garland Jason K CFO | Open-market sale 10b5-1 plan | 733 | 145.00 | 106.3K |
| 2026-05-14 | DAWES KAREN A Director | Grant or award | 995 | 0.00 | 0 |
| 2026-05-14 | EGLINTON MANNER CARRIE Director | Grant or award | 995 | 0.00 | 0 |
| 2026-05-14 | Madaus Martin D Director | Grant or award | 995 | 0.00 | 0 |
| 2026-05-14 | MUIR GLENN P Director | Grant or award | 995 | 0.00 | 0 |
| 2026-05-14 | Konstantinov Konstantin Director | Grant or award | 995 | 0.00 | 0 |
| 2026-05-14 | BARTHELEMY NICOLAS Director | Grant or award | 995 | 0.00 | 0 |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 706.1M | 6.0M |
| FMR LLC | 340.1M | 2.9M |
| UNITED CAPITAL FINANCIAL ADVISORS, LLC | 326.8M | 2.8M |
| VANGUARD CAPITAL MANAGEMENT LLC | 282.4M | 2.4M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 271.6M | 2.3M |
| STATE STREET CORP | 209.4M | 1.8M |
| Bank of New York Mellon Corp | 180.4M | 1.5M |
| MAVERICK CAPITAL LTD | 178.9M | 1.5M |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 164.7M | 1.4M |
| Invesco Ltd. | 150.6M | 1.3M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Latest SEC filings
| form | filed | period | |
|---|---|---|---|
| 4 | 2026-08-21 | 2026-08-20 | on EDGAR ↗ |
| 144 | 2026-08-20 | — | on EDGAR ↗ |
| SCHEDULE 13G/A | 2026-08-14 | — | on EDGAR ↗ |
| 425 | 2026-08-04 | — | on EDGAR ↗ |
| SCHEDULE 13G | 2026-07-31 | — | on EDGAR ↗ |
| 10-Q | 2026-07-29 | 2026-06-30 | on EDGAR ↗ |
| 8-K | 2026-07-28 | 2026-07-28 | on EDGAR ↗ |
| 425 | 2026-07-24 | — | on EDGAR ↗ |
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- REPLIGEN CORP (RGEN) filed form 4 · 2026-08-21 · SEC EDGAR
- REPLIGEN CORP (RGEN) filed form 144 · 2026-08-20 · SEC EDGAR
- The Bull Case For Repligen (RGEN) Could Change Following Raised Guidance On Q2 Outperformance - Learn Why - simplywall.st · 2026-08-18 · simplywall.st
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