Biomea Fusion, Inc.·4

Apr 3, 4:15 PM ET

Erdtmann Rainer M 4

4 · Biomea Fusion, Inc. · Filed Apr 3, 2026

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Biomea Fusion (BMEA) Director Erdtmann Receives Award

What Happened Rainer M. Erdtmann — listed as a Director and as the company's President, Chief Operating Officer, Principal Financial Officer, and Principal Accounting Officer — was granted a derivative award on April 1, 2026 covering 452,512 shares. The Form 4 reports the acquisition price as $0.00, indicating this is a stock option/award rather than an open-market purchase or sale.

Key Details

  • Transaction date: 2026-04-01; filing date: 2026-04-03 (filed within the normal Form 4 reporting window).
  • Grant: 452,512 shares (derivative award); reported acquisition price $0.00 and reported total value $0 on the Form 4 line.
  • Shares owned after transaction: not specified in the supplied filing details.
  • Footnote: the option vests in 16 substantially equal quarterly installments beginning after April 1, 2026 and will be fully vested and exercisable on April 1, 2030, subject to Erdtmann’s continued service.
  • No 10b5-1 plan, tax-withholding sale, or late filing was indicated in the provided data.

Context This was an award of derivative securities (stock options or similar) that will vest over four years; the recipient does not immediately own marketable shares unless and until options are exercised and any vesting conditions are met. Awards like this are common as compensation/retention tools and are different from open-market purchases, which some investors treat as a stronger near-term bullish signal.

Insider Transaction Report

Form 4
Period: 2026-04-01
Erdtmann Rainer M
DirectorSee Remarks
Transactions
  • Award

    Stock Option (Right to Buy)

    [F1]
    2026-04-01+452,512452,512 total
    Exercise: $1.49Exp: 2036-03-31Common Stock (452,512 underlying)
Footnotes (1)
  • [F1]The option shall vest and become exercisable in 16 substantially equal quarterly installments after April 1, 2026, such that the award will be fully vested and exercisable on April 1, 2030, subject to the Reporting Person's continued service to the Issuer through each vesting date.
Signature
/s/ Rainer M. Erdtmann|2026-04-03

Documents

1 file
  • 4
    ownership.xmlPrimary

    4