Form 4 filings across 3 companies. Net figures count open-market buys and sales only. EDGAR profile ↗
Lifetime net: -$13.8M
Reported holding is the most recent post-transaction share count on a Table I row.
How quickly this filer reports. Section 16 allows two business days from the transaction.
All 9 filings we hold were filed within the two-business-day deadline.
Counted in business days from the transaction date, or the deemed execution date where the filing reports one, excluding weekends and federal holidays. How this is measured · All late filings
The 40 most recent Form 4 transactions.
| Jun 10 | MASS | 908 Devices Inc. | MEXER◆ | 14,083 | — | — | — | Open the original filing on SEC.gov |
| Jun 10 | MASS | 908 Devices Inc. | MEXER | 14,083 | — | — | +46.8% | Open the original filing on SEC.gov |
| Mar 2 | RGEN | Repligen Corp | FTAX | 9,897 | $124.97 | $1.2M | -10.0% | Open the original filing on SEC.gov |
| Feb 24 | BLFS | Biolife Solutions INC | AGRANT | 8,170 | — | — | +118.8% | Open the original filing on SEC.gov |
| Dec 4, 2025 | RGEN | Repligen Corp | JOTHER | 2,000 | — | — | -2.0% | Open the original filing on SEC.gov |
| Nov 13, 2025 | RGEN | Repligen Corp | MEXER◆ | 2,952 | — | — | — | Open the original filing on SEC.gov |
| Nov 13, 2025 | RGEN | Repligen Corp | MEXER | 2,952 | $33.87 | $100K | +3.7% | Open the original filing on SEC.gov |
| Nov 13, 2025 | RGEN | Repligen Corp | SSELL | 1,956 | $157.11 | $307.3K | -2.4% | Open the original filing on SEC.gov |
| Nov 13, 2025 | RGEN | Repligen Corp | SSELL | 5,737 | $156.22 | $896.2K | -6.5% | Open the original filing on SEC.gov |
| Nov 13, 2025 | RGEN | Repligen Corp | SSELL | 3,000 | $155.45 | $466.4K | -3.3% | Open the original filing on SEC.gov |
| Nov 13, 2025 | RGEN | Repligen Corp | SSELL | 2,500 | $154.32 | $385.8K | -2.7% | Open the original filing on SEC.gov |
| Nov 13, 2025 | RGEN | Repligen Corp | SSELL | 2,923 | $153.14 | $447.6K | -3.0% | Open the original filing on SEC.gov |
| Nov 13, 2025 | RGEN | Repligen Corp | SSELL | 2,100 | $152.17 | $319.6K | -2.1% | Open the original filing on SEC.gov |
| Nov 13, 2025 | RGEN | Repligen Corp | SSELL | 1,784 | $151.01 | $269.4K | -1.8% | Open the original filing on SEC.gov |
| Nov 12, 2025 | RGEN | Repligen Corp | MEXER◷◆ | 25,000 | — | — | — | Open the original filing on SEC.gov |
| Nov 12, 2025 | RGEN | Repligen Corp | SSELL◷ | 464 | $158.51 | $73.5K | -0.5% | Open the original filing on SEC.gov |
| Nov 12, 2025 | RGEN | Repligen Corp | SSELL◷ | 11,096 | $158.01 | $1.8M | -9.9% | Open the original filing on SEC.gov |
| Nov 12, 2025 | RGEN | Repligen Corp | SSELL◷ | 4,959 | $156.65 | $776.8K | -4.2% | Open the original filing on SEC.gov |
| Nov 12, 2025 | RGEN | Repligen Corp | SSELL◷ | 4,740 | $155.85 | $738.7K | -3.9% | Open the original filing on SEC.gov |
| Nov 12, 2025 | RGEN | Repligen Corp | SSELL◷ | 3,741 | $154.92 | $579.6K | -3.0% | Open the original filing on SEC.gov |
| Nov 12, 2025 | RGEN | Repligen Corp | MEXER◷ | 25,000 | $33.87 | $846.8K | +24.8% | Open the original filing on SEC.gov |
| Sep 10, 2025 | RGEN | Repligen Corp | MEXER◆ | 20,000 | — | — | — | Open the original filing on SEC.gov |
| Sep 10, 2025 | RGEN | Repligen Corp | SSELL | 2,179 | $122.23 | $266.3K | -2.1% | Open the original filing on SEC.gov |
| Sep 10, 2025 | RGEN | Repligen Corp | SSELL | 7,584 | $121.42 | $920.8K | -6.9% | Open the original filing on SEC.gov |
| Sep 10, 2025 | RGEN | Repligen Corp | SSELL | 14,882 | $120.19 | $1.8M | -11.9% | Open the original filing on SEC.gov |
| Sep 10, 2025 | RGEN | Repligen Corp | SSELL | 3,262 | $119.64 | $390.3K | -2.5% | Open the original filing on SEC.gov |
| Sep 10, 2025 | RGEN | Repligen Corp | SSELL | 1,108 | $118.32 | $131.1K | -0.9% | Open the original filing on SEC.gov |
| Sep 10, 2025 | RGEN | Repligen Corp | SSELL | 96 | $116.34 | $11.2K | <0.1% | Open the original filing on SEC.gov |
| Sep 10, 2025 | RGEN | Repligen Corp | MEXER | 20,000 | $33.87 | $677.4K | +18.2% | Open the original filing on SEC.gov |
| Jun 12, 2025 | MASS | 908 Devices Inc. | AGRANT◆ | 6,516 | — | — | — | Open the original filing on SEC.gov |
| Jun 12, 2025 | MASS | 908 Devices Inc. | AGRANT◆ | 14,083 | — | — | — | Open the original filing on SEC.gov |
| Jun 11, 2025 | MASS | 908 Devices Inc. | MEXER◆ | 11,364 | — | — | — | Open the original filing on SEC.gov |
| Jun 11, 2025 | MASS | 908 Devices Inc. | MEXER | 11,364 | — | — | +60.7% | Open the original filing on SEC.gov |
| May 15, 2025 | RGEN | Repligen Corp | SSELL◷ | 7 | $127.00 | $889 | <0.1% | Open the original filing on SEC.gov |
| May 15, 2025 | RGEN | Repligen Corp | SSELL◷ | 268 | $125.20 | $33.6K | -0.2% | Open the original filing on SEC.gov |
| May 15, 2025 | RGEN | Repligen Corp | SSELL◷ | 6,533 | $124.34 | $812.3K | -5.6% | Open the original filing on SEC.gov |
| May 15, 2025 | RGEN | Repligen Corp | SSELL◷ | 17,596 | $123.57 | $2.2M | -13.1% | Open the original filing on SEC.gov |
| May 15, 2025 | RGEN | Repligen Corp | SSELL◷ | 2,043 | $122.66 | $250.6K | -1.5% | Open the original filing on SEC.gov |