Erasca, Inc. (ERAS) Insider Ownership

Historic Insider Ownership Trends

As of May 14, 2026, the three largest insider holders of ERAS are Jonathan E Lim (Chairman Ceo, 19.46Mn shares), Jonathan E Lim (Chairman Ceo, 18.40Mn shares), Jonathan E Lim (Chairman Ceo, 12.90Mn 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 19,456,216 09 Oct, 2023
Jonathan E Lim Chairman Ceo 0 18,396,216 08 Jun, 2023
Jonathan E Lim Chairman Ceo 0 12,899,360 06 Dec, 2023
Venture Partners X, Llc Arch - 0 11,055,554 20 Jul, 2021
Venture Partners X, Llc Arch - 0 11,055,554 20 Jul, 2021
Bihua Chen - 0 10,813,246 22 Jul, 2021
Alexander W. Casdin - 573,974 0 22 May, 2024
Lin Wei Chief Medical Officer 315,812 0 02 Feb, 2023
David M. Chacko Cfo And Cbo 279,980 0 30 Jan, 2026
Pratik S Multani - 172,866 0 20 Jul, 2021
Pratik S Multani - 166,666 6,200 03 Jun, 2025
Ebun Garner Chief Legal Officer 25,076 0 03 Apr, 2026
James Arthur Bristol - 0 20,000 22 Dec, 2022
Valerie Denise Harding Start - 0 20,000 07 Dec, 2023
Julie Hambleton - 6,000 0 20 Jul, 2021
Valerie Denise Harding Start - 2,000 0 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
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 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 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
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
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 David M. Chacko Stock option (right to buy) A 640,000 $0.00 640,000 D A
15 Dec, 2025 Ebun Garner Common Stock A 3,902 $1.19 25,076 D A
07 Jan, 2026 Ebun Garner Common Stock A 120,000 $1.70 145,076 D M
07 Jan, 2026 Ebun Garner Common Stock D 120,000 $5.59 25,076 D S
07 Jan, 2025 Ebun Garner Stock Option (right to buy) D 120,000 $0.00 360,000 D M
01 Jan, 2026 Alexander W. Casdin Stock Option (right to buy) A 23,872 $0.00 23,872 D A
01 Jan, 2026 James Arthur Bristol Stock Option (right to buy) A 37,762 $0.00 37,762 D A
01 Jan, 2026 Jean I Liu Stock Option (right to buy) A 20,617 $0.00 20,617 D A
01 Jan, 2026 Valerie Denise Harding Start Stock Option (right to buy) A 24,306 $0.00 24,306 D A