Cartesian Therapeutics, Inc. (RNAC) Insider Ownership

Historic Insider Ownership Trends

Cartesian Therapeutics's three largest insider shareholders as of May 30, 2026 are Timothy A Springer (Director, 8.65Mn shares), Elizabeth Hoge (TenPercentOwner, 5.31Mn shares), Murat Kalayoglu (TenPercentOwner, 5.31Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Timothy A Springer - 8,646,285 0 06 Jan, 2026
Carrie Smith Cox - 390,881 0 04 Jan, 2024
Patrick J Zenner - 12,974 0 06 Jan, 2026
Timothy C Barabe - 56,966 0 06 Jan, 2026
Peter G Traber Chief Medical Officer 451,826 0 26 Sep, 2023
Nishan M Desilva - 11,366 0 06 Jan, 2026
Lloyd P. Johnston Chief Operations Officer 265,515 0 06 Jan, 2023
Takashi Kei Kishimoto Chief Scientific Officer 225,316 0 01 Jun, 2023
Aymeric Sallin - 178,000 0 04 Jan, 2024
Carsten Brunn President And Ceo 323,530 0 08 Jan, 2026
Kemal Malik - 11,133 0 06 Jan, 2026
Kevin Tan Chief Financial Officer 77,000 0 05 Jan, 2022
Murat Kalayoglu - 0 5,313,261 06 Apr, 2026
Michael Singer - 110,123 60,841 15 Nov, 2023
Christopher M Jewell Chief Scientific Officer 62,490 0 13 Jan, 2025
Milos Miljkovic Chief Medical Officer 58,820 0 08 Jan, 2026
Metin Kurtoglu Chief Technology Officer 62,258 0 07 Jan, 2025
Elizabeth Hoge - 0 5,313,261 06 Apr, 2026
Emily English Chief Operations Officer 94,226 0 06 Jan, 2026
June Ann Seymour Chief Accounting Officer 6,500 0 06 Jan, 2026
Adrian Ion Bot - 5,800 0 18 Dec, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
02 Apr, 2026 Elizabeth Hoge Common Stock A 758,001 - 5,313,261 I M
02 Apr, 2026 Murat Kalayoglu Common Stock A 758,001 - 5,313,261 I M
02 Apr, 2026 Elizabeth Hoge Common Stock A 758,001 - 5,313,261 I M
02 Apr, 2026 Murat Kalayoglu Common Stock A 758,001 - 5,313,261 I M
02 Apr, 2026 Murat Kalayoglu Series A Non-Voting Convertible Preferred Stock D 22,740 - 33,662 I M
02 Apr, 2026 Elizabeth Hoge Series A Non-Voting Convertible Preferred Stock D 22,740 - 33,662 I M
02 Apr, 2026 Elizabeth Hoge Series A Non-Voting Convertible Preferred Stock D 22,740 - 33,662 I M
02 Apr, 2026 Murat Kalayoglu Series A Non-Voting Convertible Preferred Stock D 22,740 - 33,662 I M
13 Mar, 2026 Michael Singer Common Stock D 6,555 $0.00 49,578 D G
13 Mar, 2026 Michael Singer Common Stock D 6,555 $0.00 49,578 D G
13 Mar, 2026 Michael Singer Common Stock D 6,555 $0.00 49,578 D G
06 Jan, 2026 Milos Miljkovic Common Stock D 3,573 $6.82 58,820 D S
06 Jan, 2026 Carsten Brunn Common Stock D 23,766 $6.82 323,530 D S
06 Jan, 2026 Milos Miljkovic Common Stock D 3,573 $6.82 58,820 D S
06 Jan, 2026 Milos Miljkovic Common Stock D 3,573 $6.82 58,820 D S
02 Jan, 2026 Michael Singer Common Stock A 2,600 $0.00 56,133 D A
02 Jan, 2026 Kemal Malik Common Stock A 2,600 $0.00 11,133 D A
02 Jan, 2026 Emily English Common Stock A 24,000 $0.00 94,226 D A
02 Jan, 2026 Murat Kalayoglu Common Stock A 2,600 $0.00 511,577 D A
02 Jan, 2026 June Ann Seymour Common Stock A 6,500 $0.00 6,500 D A