Erasca, Inc. (ERAS) 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 Erasca are Chairman & Ceo Jonathan E Lim (12.90Mn shares), Director Bihua Chen (10.81Mn shares), TenPercentOwner Venture Partners X, Llc Arch (5.53Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Jonathan E Lim Chairman & Ceo 12,899,360 06 Dec, 2023
Bihua Chen 10,813,246 20 Dec, 2022
Venture Partners X, Llc Arch 5,527,777 20 Jul, 2021
Alexander W. Casdin 573,974 22 May, 2024
Lin Wei Chief Medical Officer 315,812 03 Feb, 2023
David M. Chacko Cfo And Cbo 262,187 05 Feb, 2025
Pratik S Multani 172,866 03 Jun, 2025
Ebun Garner General Counsel & Corp. Sec. 25,076 08 Jan, 2026
Valerie Denise Harding Start 22,000 20 Jul, 2021
James Arthur Bristol 20,000 22 Dec, 2022
Julie Hambleton 6,000 20 Jul, 2021

* 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
07 Jan, 2026 Ebun Garner Common Stock D 120,000 $5.59 25,076 D S
07 Jan, 2026 Ebun Garner Common Stock A 120,000 $1.70 145,076 D M
15 Dec, 2025 Ebun Garner Common Stock A 3,902 $1.19 25,076 D A
23 May, 2025 Pratik S Multani Common Stock A 6,200 $0.00 6,200 I G
23 May, 2025 Pratik S Multani - - 166,666 D
23 May, 2025 Pratik S Multani - - 6,200 I
23 May, 2025 Pratik S Multani Common Stock D 6,200 $0.00 166,666 D G
13 Dec, 2024 Ebun Garner - - 21,174 D
13 Dec, 2024 Ebun Garner Common Stock A 5,731 $1.56 21,174 D J
13 Dec, 2024 David M. Chacko Common Stock A 12,324 $1.56 262,187 D J
14 Jun, 2024 Ebun Garner - - 21,174 D
14 Jun, 2024 Ebun Garner Common Stock A 5,715 $1.56 21,174 D J
14 Jun, 2024 David M. Chacko Common Stock A 3,137 $1.56 262,187 D J
21 May, 2024 Alexander W. Casdin - - 573,974 D
21 May, 2024 Alexander W. Casdin Common Stock A 80,000 $2.27 573,974 D P
15 Dec, 2023 Ebun Garner Common Stock A 5,448 $1.59 9,728 D J
15 Dec, 2023 David M. Chacko - - 246,726 D
15 Dec, 2023 David M. Chacko Common Stock A 7,478 $1.59 246,726 D J
06 Dec, 2023 Jonathan E Lim - - 12,899,360 I
06 Dec, 2023 Jonathan E Lim Common Stock A 278,150 $1.72 12,899,360 I P