Erasca, Inc. (ERAS) Insider Ownership

Historic Insider Ownership Trends

As of June 18, 2026, the three largest insider holders of ERAS are Jonathan E Lim (Chairman Ceo, 32.36Mn shares), Jonathan E Lim (Chairman Ceo, 18.40Mn shares), Venture Partners X, Llc Arch (TenPercentOwner, 11.06Mn 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
Jonathan E Lim Chairman Ceo 0 32,355,576 06 Dec, 2023
Ebun Garner Chief Legal Officer 25,076 0 03 Apr, 2026
Alexander W. Casdin - 573,974 0 22 May, 2024
Julie Hambleton - 6,000 0 20 Jul, 2021
Pratik S Multani - 172,866 0 20 Jul, 2021
Bihua Chen - 0 10,813,246 22 Jul, 2021
Valerie Denise Harding Start - 0 20,000 07 Dec, 2023
James Arthur Bristol - 0 20,000 22 Dec, 2022
Venture Partners X, Llc Arch - 0 11,055,554 20 Jul, 2021
David M. Chacko Cfo And Cbo 279,980 0 30 Jan, 2026
Lin Wei Chief Medical Officer 315,812 0 02 Feb, 2023

* 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
01 Apr, 2026 Ebun Garner Common Stock A 80,000 $1.70 105,076 D M
01 Apr, 2026 Ebun Garner Common Stock A 80,000 $1.70 105,076 D M
01 Apr, 2026 Ebun Garner Common Stock D 80,000 $16.40 25,076 D S
01 Apr, 2026 Ebun Garner Common Stock D 80,000 $16.40 25,076 D S
01 Apr, 2026 Ebun Garner Stock Option (right to buy) D 80,000 $0.00 280,000 D M
01 Apr, 2026 Ebun Garner Stock Option (right to buy) D 80,000 $0.00 280,000 D M
04 Mar, 2026 Shannon Morris Common Stock A 20,000 $1.70 20,000 D M
04 Mar, 2026 Shannon Morris Common Stock A 20,000 $1.70 20,000 D M
04 Mar, 2026 Shannon Morris Common Stock D 20,000 $15.04 0 D S
04 Mar, 2026 Shannon Morris Common Stock D 20,000 $15.04 0 D S
04 Mar, 2025 Shannon Morris Stock Option (right to buy) D 20,000 $0.00 515,800 D M
04 Mar, 2025 Shannon Morris Stock Option (right to buy) D 20,000 $0.00 515,800 D M
29 Jan, 2026 Shannon Morris Stock option (right to buy) A 625,000 $0.00 625,000 D A
29 Jan, 2026 Michael David Varney Stock option (right to buy) A 96,000 $0.00 96,000 D A
15 Dec, 2025 David M. Chacko Common Stock A 17,793 $1.19 279,980 D J
29 Jan, 2026 Ebun Garner Stock option (right to buy) A 560,000 $0.00 560,000 D A
29 Jan, 2026 Michael David Varney Stock option (right to buy) A 96,000 $0.00 96,000 D A
29 Jan, 2026 Jonathan E Lim Stock option (right to buy) A 2,000,000 $0.00 2,000,000 D A
29 Jan, 2026 Shannon Morris Stock option (right to buy) A 625,000 $0.00 625,000 D A
29 Jan, 2026 Ebun Garner Stock option (right to buy) A 560,000 $0.00 560,000 D A