Cartesian Therapeutics, Inc. (RNAC) Insider Ownership

Historic Insider Ownership Trends

According to recent filings covering the 90 days ending January 10, 2026, the three most significant insider holders at Cartesian Therapeutics are Director Timothy A Springer (9.30Mn shares), Director Murat Kalayoglu (5.07Mn shares), TenPercentOwner Elizabeth Hoge (4.56Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Timothy A Springer 9,302,798 06 Jan, 2026
Murat Kalayoglu 5,066,837 06 Jan, 2026
Elizabeth Hoge 4,555,260 15 Oct, 2024
Peter G Traber Chief Medical Officer 15,059 26 Sep, 2023
Carsten Brunn President And Ceo 323,530 08 Jan, 2026
Lloyd P. Johnston Chief Operations Officer 8,850 06 Jan, 2023
Takashi Kei Kishimoto Chief Scientific Officer 7,510 01 Jun, 2023
Aymeric Sallin 5,933 04 Jan, 2024
Michael Singer 152,352 06 Jan, 2026
Blaine Davis Chief Financial Officer 121,220 08 Jan, 2026
Emily English Chief Operations Officer 94,226 06 Jan, 2026
Kevin Tan Chief Financial Officer 2,566 05 Jan, 2022
Christopher M Jewell Chief Scientific Officer 62,490 13 Jan, 2025
Metin Kurtoglu Chief Technology Officer 62,258 07 Jan, 2025
Milos Miljkovic Chief Medical Officer 58,820 08 Jan, 2026
Timothy C Barabe 56,966 06 Jan, 2026
Carrie Smith Cox 15,629 06 Jan, 2025
Patrick J Zenner 12,974 06 Jan, 2026
Nishan M Desilva 11,366 06 Jan, 2026
Kemal Malik 11,133 06 Jan, 2026
June Ann Seymour Chief Accounting Officer 6,500 06 Jan, 2026
Adrian Ion Bot 5,800 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
06 Jan, 2026 Carsten Brunn Common Stock D 23,766 $6.82 323,530 D S
06 Jan, 2026 Blaine Davis Common Stock D 10,591 $6.82 121,220 D S
06 Jan, 2026 Milos Miljkovic Common Stock D 3,573 $6.82 58,820 D S
02 Jan, 2026 Timothy A Springer Common Stock A 2,600 $0.00 8,646,285 D A
02 Jan, 2026 Patrick J Zenner Common Stock A 2,600 $0.00 12,974 D A
02 Jan, 2026 Timothy C Barabe Common Stock A 2,600 $0.00 56,966 D A
02 Jan, 2026 Nishan M Desilva Common Stock A 2,600 $0.00 11,366 D A
02 Jan, 2026 Carsten Brunn Common Stock A 143,200 $0.00 347,296 D A
02 Jan, 2026 Kemal Malik Common Stock A 2,600 $0.00 11,133 D A
02 Jan, 2026 Blaine Davis Common Stock A 37,000 $0.00 131,811 D A
02 Jan, 2026 Murat Kalayoglu Common Stock A 2,600 $0.00 511,577 D A
02 Jan, 2026 Michael Singer Common Stock A 2,600 $0.00 56,133 D A
02 Jan, 2026 Milos Miljkovic Common Stock A 27,000 $0.00 62,393 D A
02 Jan, 2026 Emily English Common Stock A 24,000 $0.00 94,226 D A
02 Jan, 2026 June Ann Seymour Common Stock A 6,500 $0.00 6,500 D A
30 Dec, 2025 Emily English Common Stock A 7,500 $3.30 70,226 D M
16 Dec, 2025 Adrian Ion Bot - - 5,800 D
16 Dec, 2025 Adrian Ion Bot Common Stock A 5,800 $0.00 5,800 D A
04 Dec, 2025 Timothy C Barabe Common Stock A 30,000 $6.86 54,366 D P
28 Nov, 2025 Emily English Common Stock A 7,500 $3.30 62,726 D M