Security key
75340L104
RAPID MICRO BIOSYSTEMS, INC. - Class A common stock, $0.01 par value per share (RPID)
CUSIP: 75340L104
Q4 2024 13F Holders as of 31 Dec 2024
- Security type / class
- Equity / Class A common stock, $0.01 par value per share
- Total 13F shares
- 11,949,084
- Total 13F value
- $10,753,903
- Share change
- -669,859
- SEC-reported price per share
- $0.90
- Number of holders
- 18
- Value change
- -$597,113
- Number of buys
- 8
- Number of sells
- 4
- Shares outstanding
- 41,037,733
Holder snapshot
6 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2024
Institutions
18
Top holders
10
RPID full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2025
Previous quarter: Q3 2024
RAPID MICRO BIOSYSTEMS, INC. SEC filings
RAPID MICRO BIOSYSTEMS, INC. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 75340L104
Recent filing periods:
Ownership snapshot
Top reported holders of RPID - RAPID MICRO BIOSYSTEMS, INC. - Class A common stock, $0.01 par value per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Robert G. Spignesi Jr.
Disclosed value leader
KENNEDY LEWIS MANAGEMENT LP
Comparable rows
15/15
Latest evidence
30 Sep 2024
13D/G
13F
3/4/5
Lead comparable stake: 6.3%
13D/G row: Robert G. Spignesi Jr.
Showing 1-6 of 15 holder rows.
Quick read
Robert G. Spignesi Jr. leads the comparable SEC ownership view at 6.3%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Robert G. Spignesi Jr.'s linked filing trail.
Comparable ownership
Top 5
Robert G. Spignesi Jr.
6.3%
Bain Capital Life Sciences Invest...
21%
KENNEDY LEWIS MANAGEMENT LP
12%
ABG-WTT Global Life Science Capit...
2.5%
VANGUARD GROUP INC
1.8%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Robert G. Spignesi Jr. |
13D/G
SPIGNESI ROBERT G JR
|
6.3%
|
$9,133,033
2,647,256 shares
|
$0 | 28 Mar 2024 |
| Bain Capital Life Sciences Investors, LLC |
13F
Company
|
21%
|
$7,506,758
8,434,560 shares
|
— | 30 Sep 2024 |
| KENNEDY LEWIS MANAGEMENT LP |
3/4/5
13F
10%+ Owner · Company
|
12%
from 13F
|
$13,548,284
2,904,490 shares
|
— | 02 Jun 2022 |
| ABG-WTT Global Life Science Capital Partners GP Ltd |
13F
Company
|
2.5%
|
$924,083
1,038,296 shares
|
— | 30 Sep 2024 |
| VANGUARD GROUP INC |
13F
Company
|
1.8%
|
$646,638
726,560 shares
|
— | 30 Sep 2024 |
| ADVENT INTERNATIONAL, L.P. |
13F
Company
|
1.4%
|
$514,222
577,777 shares
|
— | 30 Sep 2024 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2024
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
18
Shares
11,949,084
Rows available
18
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2024 vs Q3 2024 Across Filers
Q3 2024 holders
18
Q4 2024 holders
18
Holder diff
0
| Investor | Q3 2024 Shares | Q4 2024 Shares | Share Diff | Share Chg % | Q3 2024 value | Q4 2024 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend