Eos Energy appoints cybersecurity expert Haiyan Song to Board, names Marie Martin CLO

Filed July 9, 2026 · Period ending July 8, 2026 · ~1 min read

Key Changes

• medium

  Haiyan Song appointed as independent Class III director, bringing 30+ years of software, cloud, and cybersecurity leadership from NetApp, F5, Splunk, and HPE to strengthen Eos' technology strategy as manufacturing scales.

  Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation verify on EDGAR →
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  Marie Martin named Chief Legal Officer effective July 13, 2026, bringing 20+ years of legal and compliance leadership from Coherent Corp., FlightSafety International, and Alcoa/Arconic; current CLO Michael Silberman transitions out September 11.

  Exhibit 99.1 verify on EDGAR →
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  Greg Nixon resigned as preferred stock director July 8 to pursue other ventures; Nate Fick moved from independent director to Nixon's preferred stock seat, with Song filling Fick's vacated independent seat. Board size unchanged.

  Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation verify on EDGAR →