Rapid Micro Biosystems, Inc.
RPID- Exchange
- Nasdaq
- Industry
- Laboratory Analytical Instruments
- SEC CIK
- 0001380106
No open-market purchases or sales by Rapid Micro Biosystems, Inc. insiders were filed in the last 90 days; 34 institutions reported holding it in 13F filings for Q2 2026, worth $30.3M in total; no superinvestor holds it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Rapid Micro Biosystems, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Rapid Micro Biosystems, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Kollender Richard S | Director | 133,826 | Jul 24, 2026 | 2 |
| Spignesi Robert G. Jr. | PRESIDENT AND CEO | 1,191,973 | Jul 24, 2026 | 7 |
| Wirtjes Sean M | CHIEF FINANCIAL OFFICER | 568,981 | Jun 2, 2026 | 5 |
| Malloy Kirk | Director | 60,687 | Jun 2, 2026 | 3 |
| Pei Melinda Litherland | Director | 100,687 | Jun 2, 2026 | 2 |
| Lowenstein Inese | Director | 70,687 | Jun 2, 2026 | 2 |
| Bika Dafni | Director | 19,300 | May 26, 2026 | 1 |
| Bain Capital Life Sciences Fund, L.P. | 10% Owner | 8,434,560Indirect | May 22, 2026 | 1 |
| BCIP Life Sciences Associates, LP | 10% Owner | 8,434,560Indirect | May 22, 2026 | 1 |
| Bain Capital Life Sciences Partners, LP | 10% Owner | 8,434,560Indirect | May 22, 2026 | 1 |
| Bain Capital Life Sciences Investors, LLC | 10% Owner | 8,434,560Indirect | May 22, 2026 | 1 |
| Wilson John J. Addington | CHIEF OPERATING OFFICER | 316,762 | Mar 12, 2026 | 4 |
| Ricciardi Natale S | Director | 29,442 | Mar 2, 2026 | 1 |
| Enright Patrick G | 10% Owner | 0Indirect | Feb 6, 2026 | 2 |
| Tammenoms Bakker Juliet | 10% Owner | 0Indirect | Feb 6, 2026 | 2 |
| Longitude Venture Partners II, L.P. | 10% Owner | 0Indirect | Feb 6, 2026 | 2 |
| Longitude Capital Partners II, LLC | 10% Owner | 0Indirect | Feb 6, 2026 | 2 |
| Longitude Prime Partners, LLC | 10% Owner | 0Indirect | Feb 6, 2026 | 2 |
| Longitude Prime Fund, L.P. | 10% Owner | 0Indirect | Feb 6, 2026 | 1 |
| Hirsch David | Director | 14,300 | May 28, 2024 | 0 |
| Schwartz Jeffrey Lawrence | Director, 10% Owner | 14,300 | May 28, 2024 | 0 |
| Vezina Victoria | CHIEF HUMAN RESOURCES OFFICER | 112,608 | Mar 12, 2024 | 0 |
| Paris Jonathan | SVP, GENERAL COUNSEL | 128,698 | Mar 13, 2023 | 0 |
| Richman Darren | 10% Owner | 2,904,490Indirect | Jun 6, 2022 | 0 |
| Chene David | 10% Owner | 2,904,490Indirect | Jun 6, 2022 | 0 |
| Kennedy Lewis Management LP | 10% Owner | 2,904,490Indirect | Jun 6, 2022 | 0 |
| Kennedy Lewis Investment Management LLC | 10% Owner | 2,904,490Indirect | Jun 6, 2022 | 0 |
| KLM GP LLC | 10% Owner | 2,904,490Indirect | Jun 6, 2022 | 0 |
| Kennedy Lewis Investment Holdings II LLC | 10% Owner | 2,904,490Indirect | Jun 6, 2022 | 0 |
| Kennedy Lewis Capital Partners Master Fund II LP | 10% Owner | 2,904,490Indirect | Jun 6, 2022 | 0 |
| Kennedy Lewis GP II LLC | 10% Owner | 2,904,490Indirect | Jun 6, 2022 | 0 |
| Kennedy Lewis Capital Partners Master Fund III LP | 10% Owner | 2,904,490Indirect | Jun 6, 2022 | 0 |
| Kennedy Lewis GP III LLC | 10% Owner | 2,904,490Indirect | Jun 6, 2022 | 0 |
| Keys Richard A | CHIEF COMMERCIAL OFFICER | 43,750 | Feb 15, 2022 | 0 |
| Koppel Adam | 10% Owner | 8,434,560Indirect | Jul 21, 2021 | 0 |
| Grewal Gurinder | 10% Owner | 294,990 | Jul 20, 2021 | 0 |
| Schmitz Alexander | Director | – | Jul 15, 2021 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| May 22, 2026 (view filing)4:30 PM ET | May 20 | 2 days | Bain Capital Life Sciences Fund, L.P. and 3 others10% Owner | PPurchaseClass A Common Stock | +4.39M | – | – | –1.46M after | Derivative3 lots |
| Mar 12, 2026 (view filing) | Mar 11 | 1 day | Wilson John J. AddingtonCHIEF OPERATING OFFICER | SSaleClass A Common Stock | −9.60K | $4.32 | −$41.5K | −2.9%316.8K after | |
| Mar 12, 2026 (view filing) | Mar 10 | 2 days | Spignesi Robert G. Jr.PRESIDENT AND CEO | SSaleClass A Common Stock | −17.9K | $4.11 | −$73.7K | −1.5%1.17M after | |
| Mar 12, 2026 (view filing) | Mar 11 | 1 day | Wirtjes Sean MCHIEF FINANCIAL OFFICER | SSaleClass A Common Stock | −7.48K | $4.32 | −$32.3K | −1.3%556.2K after | |
| Feb 20, 2026 (view filing) | Feb 20 | Same day | Wilson John J. AddingtonCHIEF OPERATING OFFICER | SSaleClass A Common Stock | −5.40K | $3.92 | −$21.2K | −1.6%326.4K after | |
| Feb 20, 2026 (view filing) | Feb 19 | 1 day | Spignesi Robert G. Jr.PRESIDENT AND CEO | SSaleClass A Common Stock | −38.3K | $3.89 | −$149.1K | −3.1%1.19M after | |
| Feb 20, 2026 (view filing) | Feb 20 | Same day | Wirtjes Sean MCHIEF FINANCIAL OFFICER | SSaleClass A Common Stock | −17.3K | $3.92 | −$67.6K | −3.0%563.7K after | |
| Feb 10, 2026 (view filing) | Feb 9 | 1 day | Wilson John J. AddingtonCHIEF OPERATING OFFICER | SSaleClass A Common Stock | −4.61K | $3.78 | −$17.4K | −1.8%257.8K after | |
| Feb 10, 2026 (view filing) | Feb 9 | 1 day | Spignesi Robert G. Jr.PRESIDENT AND CEO | SSaleClass A Common Stock | −12.8K | $3.78 | −$48.5K | −1.3%962.1K after | |
| Feb 10, 2026 (view filing) | Feb 9 | 1 day | Wirtjes Sean MCHIEF FINANCIAL OFFICER | SSaleClass A Common Stock | −6.03K | $3.78 | −$22.8K | −1.2%483.9K after | |
| Feb 6, 2026 (view filing)4:26 PM ET | Feb 4 | 2 days | Enright Patrick G and 5 others10% Owner | SSaleClass A Common Stock | −49.0K | $3.88 | −$190.1K | −100.0%0 after | |
| Feb 3, 2026 (view filing)8:50 PM ET | Jan 23-Feb 3 | 11 daysLate | Enright Patrick G and 4 others10% Owner | SSaleClass A Common Stock | −108.7K | $4.36 | −$473.9K | −68.9%49.0K after | 4 lots |
| Jul 15, 2025 (view filing) | Jul 11-14 | 4 days | Spignesi Robert G. Jr.PRESIDENT AND CEO | SSaleClass A Common Stock | −23.8K | $3.32 | −$79.0K | −2.4%970.5K after | 2 lots |
| Jul 10, 2025 (view filing) | Jul 8-10 | 2 days | Spignesi Robert G. Jr.PRESIDENT AND CEO | SSaleClass A Common Stock | −33.7K | $3.47 | −$117.0K | −3.4%944.0K after | 3 lots |
| Dec 5, 2024 (view filing) | Dec 3-5 | 2 days | Pei Melinda LitherlandDirector | PPurchaseClass A Common Stock | +20.0K | $1.02 | +$20.4K | +58.3%54.3K after | 2 lots |
| Nov 27, 2024 (view filing) | Nov 26-27 | 1 day | Pei Melinda LitherlandDirector | PPurchaseClass A Common Stock | +20.0K | $1.05 | +$21.0K | +139.9%34.3K after | 2 lots |
| Aug 9, 2024 (view filing) | Aug 8 | 1 day | Malloy KirkDirector | PPurchaseClass A Common Stock | +50.0K | $0.91 | +$45.5K | +349.7%64.3K after | |
| Aug 8, 2024 (view filing) | Aug 7 | 1 day | Wirtjes Sean MCHIEF FINANCIAL OFFICER | PPurchaseClass A Common Stock | +10.0K | $0.78 | +$7.80K | +3.0%348.2K after | |
| Aug 7, 2024 (view filing) | Aug 6 | 1 day | Kollender Richard SDirector | PPurchaseClass A Common Stock | +65.0K | $0.77 | +$50.0K | +204.9%96.7K after | |
| Aug 7, 2024 (view filing) | Aug 6 | 1 day | Spignesi Robert G. Jr.PRESIDENT AND CEO | PPurchaseClass A Common Stock | +50.0K | $0.77 | +$38.5K | +10.2%540.0K after | |
| Sep 8, 2023 (view filing) | Sep 6 | 2 days | Wirtjes Sean MCHIEF FINANCIAL OFFICER | PPurchaseClass A Common Stock | +10.0K | $0.99 | +$9.90K | +3.6%285.7K after | |
| Aug 16, 2023 (view filing) | Aug 15 | 1 day | Spignesi Robert G. Jr.PRESIDENT AND CEO | PPurchaseClass A Common Stock | +20.0K | $0.97 | +$19.4K | +5.6%375.5K after | |
| Aug 10, 2023 (view filing) | Aug 8 | 2 days | Spignesi Robert G. Jr.PRESIDENT AND CEO | PPurchaseClass A Common Stock | +34.0K | $0.92 | +$31.3K | +10.6%355.5K after | |
| May 18, 2023 (view filing) | May 17 | 1 day | Spignesi Robert G. Jr.PRESIDENT AND CEO | PPurchaseClass A Common Stock | +20.0K | $0.911 | +$18.2K | +6.6%321.5K after | 9 lots |
| Jun 6, 2022 (view filing)7:45 PM ET | Jun 2-3 | 4 days | Richman Darren and 9 others10% Owner | PPurchase | +60.1K | $4.72 | +$283.6K | +2.1%2.90M after | 4 lots |
| Jun 1, 2022 (view filing)8:00 PM ET | May 27-Jun 1 | 5 days | Richman Darren and 9 others10% Owner | PPurchase | +68.6K | $4.87 | +$334.4K | +2.5%2.87M after | 6 lots |
| May 26, 2022 (view filing)8:00 PM ET | May 25-26 | 1 day | Richman Darren and 9 others10% Owner | PPurchase | +49.9K | $4.59 | +$228.9K | +1.8%2.83M after | 4 lots |
| May 19, 2022 (view filing)5:33 PM ET | May 17-18 | 2 days | Richman Darren and 9 others10% Owner | PPurchase | +96.5K | $4.08 | +$393.8K | +3.6%2.80M after | 4 lots |
| May 18, 2022 (view filing) | May 16 | 2 days | Spignesi Robert G. Jr.President and CEO | PPurchaseClass A Common Stock | +10.0K | $3.80 | +$38.0K | +5.4%194.0K after | |
| Mar 14, 2022 (view filing) | Mar 10 | 4 days | Lowenstein IneseDirector | PPurchaseClass A Common Stock | +10.0K | $6.95 | +$69.5K | New position10.0K after | |
| Jul 21, 2021 (view filing)4:40 PM ET | Jul 19 | 2 days | Schwartz Jeffrey Lawrence and 5 othersDirector, 10% Owner | PPurchaseClass A Common Stock | +100.0K | $20.00 | +$2.00M | +1.2%8.43M after | |
| Jul 20, 2021 (view filing)9:39 PM ET | Jul 19 | 1 day | Enright Patrick G and 5 others10% Owner | PPurchaseClass A Common Stock | +150.0K | $20.00 | +$3.00M | New position150.0K after |