RPID

Rapid Micro Biosystems, Inc.

Company with tickers: RPID

CIK

1380106

CUSIP

75340L104

Shares Outstanding

45,322,280

13F Activity (30d)

42 filings 40 filers

Trades by corporate insiders — officers, directors and holders of more than 10% of the shares — disclosed to the SEC on Forms 3, 4 and 5. Form 4 must be filed within two business days of the trade.

Date	Insider	Role	Type	Shares	Price	Value	After
2026-05-29	LOWENSTEIN INESE	Director	Award	12,787	—	—	12,787
2026-05-29	PEI MELINDA LITHERLAND	Director	Award	12,787	—	—	12,787
2026-05-29	LOWENSTEIN INESE	Director	Award	12,787	$1.96	$24,999	70,687
2026-05-29	Spignesi Robert G. Jr.	Director, PRESIDENT AND CEO	Award	12,787	$1.96	$24,999	1,190,571
2026-05-29	PEI MELINDA LITHERLAND	Director	Award	12,787	$1.96	$24,999	100,687
2026-05-29	LOWENSTEIN INESE	Director	Award	12,787	—	—	12,787
2026-05-29	PEI MELINDA LITHERLAND	Director	Award	12,787	—	—	12,787
2026-05-29	Malloy Kirk	Director	Award	12,787	—	—	12,787
2026-05-29	WIRTJES SEAN M	CHIEF FINANCIAL OFFICER	Award	12,787	—	—	12,787
2026-05-29	Malloy Kirk	Director	Award	12,787	—	—	12,787
2026-05-29	Malloy Kirk	Director	Award	12,787	$1.96	$24,999	60,687
2026-05-29	Spignesi Robert G. Jr.	Director, PRESIDENT AND CEO	Award	12,787	—	—	12,787
2026-05-29	WIRTJES SEAN M	CHIEF FINANCIAL OFFICER	Award	12,787	$1.96	$24,999	568,981
2026-05-29	WIRTJES SEAN M	CHIEF FINANCIAL OFFICER	Award	12,787	—	—	12,787
2026-05-29	Spignesi Robert G. Jr.	Director, PRESIDENT AND CEO	Award	12,787	—	—	12,787
2026-05-29	Malloy Kirk	Director	Other	10,000	—	—	10,000
2026-05-21	Kollender Richard S	Director	Award	38,700	—	—	38,700
2026-05-21	Kollender Richard S	Director	Award	19,300	—	—	130,318
2026-05-21	Bika Dafni	Director	Award	19,300	—	—	19,300
2026-05-21	Malloy Kirk	Director	Other	10,000	—	—	10,000
2026-05-21	LOWENSTEIN INESE	Director	Award	19,300	—	—	57,900
2026-05-21	Bika Dafni	Director	Award	38,700	—	—	38,700
2026-05-21	LOWENSTEIN INESE	Director	Award	38,700	—	—	38,700
2026-05-21	PEI MELINDA LITHERLAND	Director	Award	19,300	—	—	87,900
2026-05-21	PEI MELINDA LITHERLAND	Director	Award	38,700	—	—	38,700
2026-05-21	Malloy Kirk	Director	Award	19,300	—	—	47,900
2026-05-21	Malloy Kirk	Director	Award	38,700	—	—	38,700
2026-05-20	Bain Capital Life Sciences Investors, LLC	10% Owner	Buy	1,463,000	—	—	1,463,000
2026-05-20	Bain Capital Life Sciences Investors, LLC	10% Owner	Buy	1,463,000	—	—	1,463,000
2026-05-20	Bain Capital Life Sciences Investors, LLC	10% Owner	Buy	1,463,000	—	—	1,463,000
2026-05-20	Bain Capital Life Sciences Investors, LLC	10% Owner	Other	8,434,560	—	—	8,434,560
2026-03-11	WIRTJES SEAN M	CHIEF FINANCIAL OFFICER	Sell	7,480	$4.32	$32,299	556,194
2026-03-11	Wilson John J. Addington	CHIEF OPERATING OFFICER	Sell	9,603	$4.32	$41,467	316,762
2026-03-10	Spignesi Robert G. Jr.	Director, PRESIDENT AND CEO	Sell	17,922	$4.11	$73,686	1,169,848
2026-02-27	RICCIARDI NATALE S	Director	Convert	842	$0.75	$632	0
2026-02-27	RICCIARDI NATALE S	Director	Convert	842	$0.75	$632	29,442
2026-02-20	Wilson John J. Addington	CHIEF OPERATING OFFICER	Sell	5,403	$3.92	$21,196	326,365
2026-02-20	WIRTJES SEAN M	CHIEF FINANCIAL OFFICER	Sell	17,254	$3.92	$67,687	563,674
2026-02-19	Spignesi Robert G. Jr.	Director, PRESIDENT AND CEO	Sell	38,327	$3.89	$148,912	1,187,770
2026-02-11	Wilson John J. Addington	CHIEF OPERATING OFFICER	Award	74,000	—	—	331,768
2026-02-11	Wilson John J. Addington	CHIEF OPERATING OFFICER	Award	147,000	—	—	147,000
2026-02-11	WIRTJES SEAN M	CHIEF FINANCIAL OFFICER	Award	97,000	—	—	580,928
2026-02-11	WIRTJES SEAN M	CHIEF FINANCIAL OFFICER	Award	193,000	—	—	193,000
2026-02-11	Spignesi Robert G. Jr.	Director, PRESIDENT AND CEO	Award	528,000	—	—	528,000
2026-02-11	Spignesi Robert G. Jr.	Director, PRESIDENT AND CEO	Award	264,000	—	—	1,226,097
2026-02-09	WIRTJES SEAN M	CHIEF FINANCIAL OFFICER	Sell	6,027	$3.78	$22,798	483,928
2026-02-09	Spignesi Robert G. Jr.	Director, PRESIDENT AND CEO	Sell	12,840	$3.78	$48,570	962,097
2026-02-09	Wilson John J. Addington	CHIEF OPERATING OFFICER	Sell	4,610	$3.78	$17,438	257,768
2026-02-04	Longitude Capital Partners II, LLC	10% Owner	Other	4,029,245	—	—	4,029,245
2026-02-04	Longitude Capital Partners II, LLC	10% Owner	Sell	49,000	$3.88	$190,091	0

Showing 1–50 of 329 transactions