Security key
816212302
Cartesian Therapeutics, Inc. - COMMON STOCK (RNAC)
CUSIP: 816212302
Q4 2025 13F Holders as of 31 Dec 2025
- Type / Class
- Equity / COMMON STOCK
- Shares outstanding
- 26,658,100
- Total 13F shares
- 5,161,870
- Share change
- -806,404
- Total reported value
- $37,214,593
- Put/Call ratio
- 85%
- Price per share
- $7.21
- Number of holders
- 66
- Value change
- -$8,841,222
- Number of buys
- 37
- Number of sells
- 32
Report period
Q4 2025
Institutions
66
Top holders
10
RNAC full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
Cartesian Therapeutics, Inc. SEC filings
Cartesian Therapeutics, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 816212302
Recent filing periods:
Ownership snapshot
Top shareholders of RNAC - Cartesian Therapeutics, Inc. - COMMON STOCK (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.
Lead holder
Timothy A. Springer
13D/G signal
Timothy A. Springer
Evidence rows
50
Latest as of
30 Sep 2025
13D/G
13F
Lead comparable stake: 37%
13D/G row: Timothy A. Springer
Showing first 8 of 50 holder rows.
Open remaining rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Timothy A. Springer |
13D/G
|
37%
|
$116,671,361
9,555,394 shares
|
+$258,583 | 13 Jan 2025 |
| JPMORGAN CHASE & CO |
13D/G
13F
Company
|
6.1%
|
$20,459,516
1,675,636 shares
|
$0 | 31 Mar 2025 |
| FMR LLC |
13F
Company
|
8.1%
|
$22,032,103
2,155,783 shares
|
— | 30 Sep 2025 |
| BlackRock, Inc. |
13F
Company
|
2.4%
|
$6,636,266
649,341 shares
|
— | 30 Sep 2025 |
| Siren, L.L.C. |
13F
Individual
|
2.1%
|
$5,756,640
563,272 shares
|
— | 30 Sep 2025 |
| VANGUARD GROUP INC |
13F
Company
|
2%
|
$5,321,779
520,722 shares
|
— | 30 Sep 2025 |
| MPM BioImpact LLC |
13F
Company
|
1.4%
|
$3,883,600
380,000 shares
|
— | 30 Sep 2025 |
| Erste Asset Management GmbH |
13F
Company
|
0.98%
|
$2,561,108
260,011 shares
|
— | 30 Sep 2025 |
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 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
66
Shares
5,161,870
Rows loaded
66
| Investor | Option | Weight % | Change % | Reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* 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. An asterisk next to the price means the price is likely invalid.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
65
Q4 2025 holders
66
Holder diff
1
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend