Helen Susan Kim

President, KOSAN BIOSCIENCES INC.

Companies

Aktis Oncology, Inc.Board member Jan 8, 2026 to now¹
PROTHENA CORP PUBLIC LTD COBoard member Sep 2, 2022 to now²
Applied Molecular Transport Inc.Board member Jun 4, 2020 to Aug 27, 2021³
ASSEMBLY BIOSCIENCES, INC.Board member Mar 12, 2018 to Jun 15, 2020⁴
EXICURE, INC.Board member Sep 28, 2017 to Jun 8, 2020⁵
Kite PharmaEVP, Business Development Apr 23, 2015 to Oct 5, 2017⁶
Viracta Therapeutics, Inc.Board member Jul 28, 2009 to Jul 1, 2015⁷

Holdings

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

Shares held

Aktis Oncology, Inc. AKTS157,387 shares⁸$2.4M at $15.20Jan 12, 2026

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

Recent filings

Jan 12, 2026Bought 22,545 shares at $18.00 of Aktis Oncology, Inc.⁸
Jan 12, 2026Converted 134,842 shares of Aktis Oncology, Inc.⁸
Jan 12, 2026Bought 812,455 shares at $18.00 of Aktis Oncology, Inc.⁸
Jan 12, 2026Converted 4,859,370 shares of Aktis Oncology, Inc.⁸

Sources

The numbers on this page point here. Each one links to the record it came from.

1
SEC EDGARAktis Oncology, Inc., Board member
2
SEC EDGARPROTHENA CORP PUBLIC LTD CO, Board member
3
SEC EDGARApplied Molecular Transport Inc., Board member
4
SEC EDGARASSEMBLY BIOSCIENCES, INC., Board member
5
SEC EDGAREXICURE, INC., Board member
6
SEC EDGARKite Pharma, EVP, Business Development
7
SEC EDGARViracta Therapeutics, Inc., Board member
8
SEC EDGARAktis Oncology, Inc. shares after the filing of Jan 12, 2026