Cartesian Therapeutics, Inc.
RNAC- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001453687
No open-market purchases or sales by Cartesian Therapeutics, Inc. insiders were filed in the last 90 days; 94 institutions reported holding it in 13F filings for Q2 2026, worth $90.4M in total; no superinvestor holds it.
Holders of 5% or more of RNAC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Cartesian Therapeutics, Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Springer Timothy A | 13D/A | 36.90%9.56M shares | +0.10 ppfrom 36.80% | Dec 23, 20242 filings | Jan 15, 2025 | SEC |
| Squarepoint Ops LLC | 13G | 8.30%2.21M shares | New | Mar 13, 20261 filing | Mar 13, 2026 | SEC |
| JPMorgan Chase & Co | 13G | 6.10%1.68M shares | New | Apr 25, 20251 filing | Apr 25, 2025 | SEC |
| FMR LLC | 13G/A | 5.30%1.37M shares | −3.00 ppfrom 8.30% | Feb 12, 20253 filings | Feb 5, 2026 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
7 Schedule 13D and 13G filings on Cartesian Therapeutics, Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 13, 20263:55 PM ET | Squarepoint Ops LLCand 5 others | 13G | 8.30%2.21M shares | New | Mar 9, 2026 | SEC |
| Feb 5, 20261:20 PM ET | FMR LLCand 1 other | 13G/A | 5.30%1.37M shares | −3.00 ppfrom 8.30% | Dec 31, 2025 | SEC |
| Nov 5, 202511:30 AM ET | FMR LLCand 1 other | 13G/A | 8.30%2.16M shares | −1.10 ppfrom 9.40% | Sep 30, 2025 | SEC |
| Apr 25, 20252:57 PM ET | JPMorgan Chase & Co | 13G | 6.10%1.68M shares | New | Mar 31, 2025 | SEC |
| Feb 12, 20259:28 AM ET | FMR LLCand 1 other | 13G/A | 9.40%2.42M shares | – | Dec 31, 2024 | SEC |
| Jan 15, 20254:25 PM ET | Springer Timothy Aand 2 others | 13D/A | 36.90%9.56M shares | +0.10 ppfrom 36.80% | Jan 13, 2025 | SEC |
| Dec 23, 20248:22 PM ET | Springer Timothy Aand 2 others | 13D/A | 36.80%9.53M shares | – | Dec 19, 2024 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Cartesian Therapeutics, Inc. shares.
No Form 144 notices for Cartesian Therapeutics, Inc. are on file.