Cabaletta Bio, Inc. (CABA) Insider Ownership

Historic Insider Ownership Trends

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
Mark Simon - 147,205 0 21 Jan, 2026
Steven Nichtberger President Ceo 1,031,483 0 21 Jan, 2026
Shawn Tomasello - 0 22,725 21 Jan, 2026
Ventures V, L.P. 5Am - 0 333,144 03 Nov, 2021
Anup Marda Chief Financial Officer 50,000 0 18 Oct, 2022
Catherine Bollard - 5,405 0 21 Jan, 2026
David J. Chang Chief Medical Officer 8,800 0 21 Jan, 2026
Gwendolyn Binder President, Science Tech. 31,312 0 21 Jan, 2026
Michael Gerard General Counsel 6,600 0 21 Jan, 2026
Steve Gavel Chief Commercial Officer 22,170 0 21 Jan, 2026

* 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 Mar, 2026 Anup Marda Stock Option (Right to Buy) A 225,000 $0.00 225,000 D A
02 Mar, 2026 Michael Gerard Stock Option (Right to Buy) A 175,000 $0.00 175,000 D A
02 Mar, 2026 Arun Das Stock Option (Right to Buy) A 175,000 $0.00 175,000 D A
02 Mar, 2026 Arun Das Stock Option (Right to Buy) A 175,000 $0.00 175,000 D A
02 Mar, 2026 Steven Nichtberger Stock Option (Right to Buy) A 674,000 $0.00 674,000 D A
02 Mar, 2026 Anup Marda Stock Option (Right to Buy) A 225,000 $0.00 225,000 D A
02 Mar, 2026 David J. Chang Stock Option (Right to Buy) A 225,000 $0.00 225,000 D A
02 Mar, 2026 Gwendolyn Binder Stock Option (Right to Buy) A 225,000 $0.00 225,000 D A
02 Mar, 2026 Michael Gerard Stock Option (Right to Buy) A 175,000 $0.00 175,000 D A
02 Mar, 2026 Arun Das Stock Option (Right to Buy) A 175,000 $0.00 175,000 D A
02 Mar, 2026 David J. Chang Stock Option (Right to Buy) A 225,000 $0.00 225,000 D A
02 Mar, 2026 Anup Marda Stock Option (Right to Buy) A 225,000 $0.00 225,000 D A
02 Mar, 2026 Michael Gerard Stock Option (Right to Buy) A 175,000 $0.00 175,000 D A
02 Mar, 2026 David J. Chang Stock Option (Right to Buy) A 225,000 $0.00 225,000 D A
21 Jan, 2026 Steve Gavel Common Stock A 22,170 $2.27 22,170 D P
21 Jan, 2026 Michael Gerard Common Stock A 6,600 $2.27 6,600 D P
21 Jan, 2026 Mark Simon Common Stock A 11,061 $2.28 147,205 D P
21 Jan, 2026 Steve Gavel Common Stock A 22,170 $2.27 22,170 D P
21 Jan, 2026 Catherine Bollard Common Stock A 4,405 $2.27 5,405 D P
21 Jan, 2026 David J. Chang Common Stock A 8,800 $2.26 8,800 D P