Julie Hambleton

Companies

• Erasca, Inc.Board member Jul 15, 2021 to now¹
• SpringWorks Therapeutics, Inc.Board member May 22, 2020 to now²
• IGM Biosciences, Inc.Board member Sep 17, 2019 to now³
• Ideaya Biosciences (United States)SVP, Chief Medical Officer May 22, 2019 to Feb 25, 2020⁴

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• IBIGM Biosciences, Inc.0 shares⁵Aug 14, 2025
• STSpringWorks Therapeutics, Inc.0 shares⁶Jul 1, 2025

As of each latest filing. The line shows shares held over time.

Recent filings

• Aug 14, 2025Returned to company 2,000 shares of IGM Biosciences, Inc.⁵
• Jul 1, 2025Returned to company 14,155 shares of SpringWorks Therapeutics, Inc.⁶
• May 14, 2025Granted 10,060 shares of SpringWorks Therapeutics, Inc.⁷
• Feb 10, 2025Sold 13,774 shares at $53.01 of SpringWorks Therapeutics, Inc.⁸
• Feb 10, 2025Exercised options 13,774 shares at $32.27 of SpringWorks Therapeutics, Inc.⁸
• Jul 25, 2024Sold 15,132 shares at $14.00 of IGM Biosciences, Inc.⁹
• Jul 25, 2024Exercised options 15,132 shares at $1.39 of IGM Biosciences, Inc.⁹
• Jun 3, 2024Sold 20 shares at $42.09 of SpringWorks Therapeutics, Inc.¹⁰
• Jun 3, 2024Sold 931 shares at $41.49 of SpringWorks Therapeutics, Inc.¹⁰
• Jun 3, 2024Sold 751 shares at $40.57 of SpringWorks Therapeutics, Inc.¹⁰
• Jun 3, 2024Sold 2,946 shares at $39.41 of SpringWorks Therapeutics, Inc.¹⁰
• May 16, 2024Granted 4,095 shares of SpringWorks Therapeutics, Inc.¹¹
• Jul 19, 2023Sold 2,418 shares at $29.31 of SpringWorks Therapeutics, Inc.¹²
• Jun 20, 2023Sold 2,400 shares at $26.92 of SpringWorks Therapeutics, Inc.¹³
• May 24, 2023Granted 4,648 shares of SpringWorks Therapeutics, Inc.¹⁴
• Mar 15, 2023Sold 1,106 shares at $31.50 of SpringWorks Therapeutics, Inc.¹⁵
• May 19, 2022Granted 4,818 shares of SpringWorks Therapeutics, Inc.¹⁶