Erasca, Inc. (ERAS) Insider Ownership

Historic Insider Ownership Trends

ERAS's three largest insider shareholders as of March 23, 2026 are Jonathan E Lim (Chairman Ceo, 12.90Mn shares), Bihua Chen (Director, 10.81Mn shares), Venture Partners X, Llc Arch (TenPercentOwner, 5.53Mn 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 12,899,360 06 Dec, 2023
Bihua Chen 0 10,813,246 22 Jul, 2021
Venture Partners X, Llc Arch 0 5,527,777 20 Jul, 2021
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 166,666 6,200 03 Jun, 2025
Ebun Garner General Counsel Corp. Sec. 25,076 0 08 Jan, 2026
Valerie Denise Harding Start 0 20,000 07 Dec, 2023
James Arthur Bristol 0 20,000 22 Dec, 2022
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
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 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 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 Jonathan E Lim Stock option (right to buy) A 2,000,000 $0.00 2,000,000 D A
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 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
01 Jan, 2026 Pratik S Multani Stock Option (right to buy) A 19,532 $0.00 19,532 D A
01 Jan, 2026 James Arthur Bristol Stock Option (right to buy) A 37,762 $0.00 37,762 D A
24 Jun, 2025 Michael David Varney Stock option (right to buy) A 120,000 $0.00 120,000 D A
24 Jun, 2025 Valerie Denise Harding Start Stock option (right to buy) A 120,000 $0.00 120,000 D A
24 Jun, 2025 Jean I Liu Stock option (right to buy) A 120,000 $0.00 120,000 D A