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Equibles

Barbara Kosacz

Board Member

XOMA Royalty Corp

Board Member

LeonaBio, Inc. (LONA)

Personal wealth note: Equibles reports source-backed professional activity and disclosed compensation; it does not estimate personal net worth.

About Barbara Kosacz

Barbara Kosacz is recorded as Board Member at XOMA Royalty Corp and Board Member at LeonaBio, Inc. (LONA). XOMA Royalty Corp reported in an 8-K filed July 14, 2026 that Barbara Kosacz resigned as director, effective July 14, 2026. XOMA Royalty Corp reported in an 8-K filed May 22, 2026 that Barbara Kosacz was appointed director nominee, effective May 21, 2026. Cero Therapeutics Holdings, Inc. reported in an 8-K filed February 15, 2024 that Barbara Kosacz resigned as board of directors of PBAX. Equibles holds 4 filed executive changes naming Barbara Kosacz; each is listed under recent activity with its source filing.

“each of Jack L. Wyszomierski, Heather L. Franklin, Natasha Hernday, Owen Hughes, Barbara Kosacz, Joseph M. Limber and Matthew Perry, voluntarily resigned as directors of the Company and from all committees of the Board of Directors of the Company on which such directors served,”
XOMA Royalty Corp Form 8-K, filed July 14, 2026 · Read the filing
“At the Annual Meeting, each of the Company’s director nominees was elected and each of the other proposals voted on was approved.”
XOMA Royalty Corp Form 8-K, filed May 22, 2026 · Read the filing

Summary generated from SEC filings and earnings-call records held by Equibles.

Affiliation history

Recorded current and former roles; source labels appear when available.

  • XOMA Royalty Corp

    Board Member

    SEC 8-K

    Current

    2026-05-21–present

  • LeonaBio, Inc. (LONA)

    Board Member

    Proxy statement

    Current

    2021-01-01–present

  • XOMA Royalty Corp

    Board Member

    Proxy statement

    Start not stated–2026-07-14

Company network

Recorded roles and call appearances connecting this person to public companies.

XOMA Royalty Corp

Current role

Board Member

2026-05-21–present

Leadership on record at LeonaBio, Inc.

Other people whose current roles at this company are on record from its filings.

Recent activity

Earnings-call and investor-event appearances, plus filed executive appointments or departures, newest first.