MBX Biosciences, Inc.·4

Jun 5, 7:57 AM ET

Hoerter Steven L. 4

4 · MBX Biosciences, Inc. · Filed Jun 5, 2026

Research Summary

AI-generated summary of this filing

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MBX Biosciences Director Steven Hoerter Receives 12,500-Share Award

What Happened
Steven L. Hoerter, a director of MBX Biosciences, was granted 12,500 derivative shares on 2026-06-04. The shares were issued at $0.00 (no cash paid). This is a compensation award (not an open-market purchase or sale) typically given to non-employee directors and should be viewed as a routine equity grant rather than a direct market buy signal.

Key Details

  • Transaction date: 2026-06-04; Form 4 filed: 2026-06-05 (timely filing).
  • Instrument: Derivative award (grant/award), 12,500 shares, acquisition price $0.00.
  • Vesting: Grant vests in full on the earlier of the one-year anniversary of the grant or the date of the next annual meeting, subject to continued service (footnote F2).
  • Shares owned after transaction: Not specified in the provided filing; footnote F1 notes certain shares are held by the Steven L Hoerter Revocable Trust (he is trustee and disclaims beneficial ownership except to the extent of any pecuniary interest).
  • Filing status: No late filing indicated.

Context
This is a standard equity compensation award to a non-employee director (designed to align interests with shareholders). Because it is an award rather than a purchase or sale, it does not necessarily signal the insider’s personal buying/selling preference. The vesting condition ties the award to continued board service.

Insider Transaction Report

Form 4
Period: 2026-06-04
Transactions
  • Award

    Stock option (right to buy)

    [F2]
    2026-06-04+12,50012,500 total
    Exercise: $30.91Exp: 2036-06-04Common Stock (12,500 underlying)
Holdings
  • Common Stock

    11,938
  • Common Stock

    [F1]
    (indirect: By Trust)
    20,000
Footnotes (2)
  • [F1]Shares held by the Steven L Hoerter Revocable Trust dated November 2, 2018, of which the Reporting Person serves as trustee. The Reporting Person disclaims beneficial ownership except to the extent of any pecuniary interest therein, and this report shall not be deemed an admission that such shares are beneficially owned by him for Section 16 or any other purpose.
  • [F2]The grant will vest in full on the earlier of the one-year anniversary of the grant date or on the date of our next annual meeting of stockholders, subject to the non-employee director's continued services to the Company.
Signature
/s/ P. Kent Hawryluk, attorney-in-fact|2026-06-05

Documents

1 file
  • 4
    ownership.xmlPrimary

    4