Reporting Manager
Edward T. Mathers
Symbol
MBX
Shares outstanding
44,684,864 shares
Disclosed Ownership
3,619,474 shares
Ownership
8.1%
Form type
SCHEDULE 13D/A
Filing time
10 Nov 2025, 17:08:55 UTC
Date of event
06 Nov 2025

Sponsored

Quoteable Key Fact

"New Enterprise Associates 17, L.P. disclosed 8.1% ownership in MBX Biosciences, Inc. Common Stock, par value $0.0001 per share (MBX) on 06 Nov 2025."

Quick Takeaways

  • New Enterprise Associates 17, L.P. filed SCHEDULE 13D/A for MBX Biosciences, Inc. Common Stock, par value $0.0001 per share (MBX).
  • Disclosed ownership: 8.1%.
  • Date of event: 06 Nov 2025.

What Changed

  • No earlier schedule filing is available for direct comparison.
  • Current filing was accepted on 10 Nov 2025, 17:08.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (12)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
New Enterprise Associates 17, L.P. 8.1% 3,614,486 0 3,614,486 /s/ Zachary Bambach Zachary Bambach as attorney-in-fact for Anthony A. Florence Jr., Managing Partner and Co-Chief Executive Officer 0001768564
NEA Partners 17, L.P. 8.1% 3,614,486 0 3,614,486 /s/ Zachary Bambach Zachary Bambach as attorney-in-fact for Anthony A. Florence Jr., Managing Partner and Co-Chief Executive Officer 0001796820
NEA 17 GP, LLC 8.1% 3,614,486 0 3,614,486 /s/ Zachary Bambach Zachary Bambach as attorney-in-fact for Anthony A. Florence Jr., Managing Partner and Co-Chief Executive Officer 0001796821
Forest Baskett 8.1% 3,614,486 0 3,614,486 /s/ Zachary Bambach Zachary Bambach as attorney-in-fact for Forest Baskett 0001277631
Ali Behbahani 8.1% 3,614,486 0 3,614,486 /s/ Zachary Bambach Zachary Bambach as attorney-in-fact for Ali Behbahani 0001613867
Carmen Chang 8.1% 3,614,486 0 3,614,486 /s/ Zachary Bambach Zachary Bambach as attorney-in-fact for Carmen Chang 0001746342
Anthony A. Florence, Jr. 8.1% 3,614,486 0 3,614,486 /s/ Zachary Bambach Zachary Bambach as attorney-in-fact for Anthony A. Florence, Jr. 0001559827
Mohamad H. Makhzoumi 8.1% 3,614,486 0 3,614,486 /s/ Zachary Bambach Zachary Bambach as attorney-in-fact for Mohamad H. Makhzoumi 0001630226
Edward T. Mathers 8.1% 3,619,474 4,988 3,614,486 /s/ Zachary Bambach Zachary Bambach as attorney-in-fact for Edward T. Mathers 0001328625
Scott D. Sandell 8.1% 3,614,486 0 3,614,486 /s/ Zachary Bambach Zachary Bambach as attorney-in-fact for Scott D. Sandell 0001237289
Paul Walker 8.1% 3,614,486 0 3,614,486 /s/ Zachary Bambach Zachary Bambach as attorney-in-fact for Paul Walker 0001553150
Rick Yang 8.1% 3,614,486 0 3,614,486 /s/ Zachary Bambach Zachary Bambach as attorney-in-fact for Rick Yang 0001851328