REPLIGEN CORP (RGEN) is a publicly traded company in the Unknown sector. Across all available filings, 36 corporate insiders have executed 1005 transactions totaling $194.3M, demonstrating a bearish sentiment with -$191.6M in net insider flow. The most recent transaction on Dec 31, 2025 involved a transaction of 2,143 shares valued at $0.
No significant insider buying has been recorded for RGEN in the recent period.
No significant insider selling has been recorded for RGEN in the recent period.
Based on recent SEC filings, insider sentiment for RGEN is bearish with an Insider Alignment Score of 1/100 and a net flow of -$191.6M. Insiders are reducing their positions, though this can be driven by factors unrelated to company outlook.
Insider trading at REPLIGEN CORP (RGEN) refers to stock transactions made by corporate insiders—executives, directors, and beneficial owners holding more than 10% of the company's shares. These individuals have access to material non-public information and are required by law to report their trades to the SEC within two business days. Currently, 36 insiders are actively trading RGEN stock, having executed 1005 transactions in the past 90 days. The most active insider is Anthony Hunt (Executive), who has made 182 transactions totaling $106.0M.
Get notified when executives and directors at RGEN file new Form 4 transactions
Date | Insider | Title | Type | Shares | Price | Value | Flags |
|---|---|---|---|---|---|---|---|
| Dec 31, 2025 | Robb Douglass Brian | CHIEF PRODUCT OFFICER | Award | 2,143 | $N/A | $0 | |
| Dec 31, 2025 | Robb Douglass Brian | CHIEF PRODUCT OFFICER | Award | 2,288 | $N/A | $0 | |
| Dec 17, 2025 | A. Dawes Karen | Executive | Sale | 275 | $161.00 | $44.3K | |
| Dec 16, 2025 | P. Muir Glenn | Executive | Option Exercise | 3,366 | $26.12 | $87.9K | |
| Dec 4, 2025 | Hunt Anthony | Executive | Other | 2,000 | $N/A | $0 | |
| Nov 25, 2025 | Loeillot Olivier | Executive | Sale | 7,041 | $170.00 | $1.2M | Large |
| Nov 18, 2025 | Bylund James | Executive | Sale | 2,191 | $151.21 | $331.3K | |
| Nov 13, 2025 | Hunt Anthony | Executive | Option Exercise | 2,952 | $33.87 | $100.0K | |
| Nov 13, 2025 | Hunt Anthony | Executive | Sale | 1,956 | $157.11 | $307.3K | |
| Nov 13, 2025 | Hunt Anthony | Executive | Sale | 5,737 | $156.22 | $896.2K | Large |
| Nov 13, 2025 | Hunt Anthony | Executive | Sale | 3,000 | $155.45 | $466.4K | |
| Nov 13, 2025 | Hunt Anthony | Executive | Sale | 2,500 | $154.32 | $385.8K | |
| Nov 13, 2025 | Hunt Anthony | Executive | Sale | 2,923 | $153.14 | $447.6K | |
| Nov 13, 2025 | Hunt Anthony | Executive | Sale | 2,100 | $152.17 | $319.6K | |
| Nov 13, 2025 | Hunt Anthony | Executive | Sale | 1,784 | $151.01 | $269.4K |
| TYPE | COUNT | VALUE | % |
|---|---|---|---|
Sale(S) | 487 | $192.9M | 79.9% |
Exercise(M) | 175 | $24.1M | 10.0% |
Payment(F) | 113 | $22.7M | 9.4% |
Purchase(P) | 34 | $1.4M | 0.6% |
Disposition(D) | 8 | $306.4K | 0.1% |
Award(A) | 159 | $53.3K | 0.0% |
Small Acquisition(L) | 1 | $2.0K | 0.0% |
Other(J) | 3 | $0 | 0.0% |
Gift(G) | 25 | $0 | 0.0% |
Insider selling pressure at REPLIGEN CORP has increased, with 36 insiders executing 1005 transactions across all time. Total sales of $192.9M significantly outpace purchases of $1.4M, resulting in a net outflow of $191.6M. This selling activity appears largely discretionary, which may warrant closer attention from investors.