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Agustin Fernandez Santana III

Executive officer and director at Klothea Bio. Also an executive officer and director at ADvantage Therapeutics.

ExecutiveDirectorRoles at 2 startups
Updated Oct 27, 2026·Latest SEC filing Sep 8, 2026·Suggest an edit

About Agustin Fernandez Santana III

Agustin Fernandez Santana III is an executive officer and director at Klothea Bio.

Form D filings also name Agustin Fernandez Santana III as an executive officer and director at ADvantage Therapeutics.

Agustin Fernandez Santana III first appears on SEC filings in 2021.

Experience

This experience comes from SEC filings. The years are when the filings name Agustin Fernandez Santana III in the role, so the role may have started earlier or lasted longer.

Klothea Bio, Inc.
Executive officer and director
2024 – 2026 · Miami, FL
Develops experimental treatments for people affected by age-related diseases.
ADvantage Therapeutics, Inc.
Executive officer and director
2021 – 2025 · Miami, FL

Key Colleagues at Startups

The people Agustin Fernandez Santana III works with at each company, as listed on that company's latest Form D.

Klothea Bio, Inc. · Form D/A, Sep 8, 2026
OJ
Olivier Jarry
Executive officer
WS
Petr Sramek
Petr Sramek
Director
JM
Jeffrey Madden
President and director
ADvantage Therapeutics, Inc. · Form D/A, Jul 28, 2025
WS
JM
Jeffrey Madden
Executive officer and director
DB
David Buchsbaum
Chief Financial Officer
FM

Sources

  1. SECKlothea Bio, Inc. Form D/A, filed Sep 8, 2026
  2. SECADvantage Therapeutics, Inc. Form D/A, filed Jul 28, 2025