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Get filing alertsEos Energy appoints Michelle Buczkowski as Chief Commercial Officer; Nathan Kroeker to depart
Filed August 25, 2026 · Period ending August 24, 2026 · ~1 min read
Key Changes
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Michelle Buczkowski appointed Chief Commercial Officer effective August 24, 2026, consolidating sales, business development, government affairs, marketing, and communications under one leader.
Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation verify on EDGAR → -
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Nathan Kroeker, who joined as CFO in January 2023 and became CCO in 2025, will depart October 20, 2026 after a transition period. Separation agreement terms not yet finalized.
Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation verify on EDGAR → -
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Buczkowski's base salary increased from $385,000 to $440,000 and target annual bonus raised to 100% of base salary in connection with the CCO appointment.
Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation verify on EDGAR → -
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As Chief Administrative Officer, Buczkowski secured a $24 million Pennsylvania grant for manufacturing expansion and led engagement that positioned Eos for selection into the Golden Dome program.
Exhibit 99.1 view on EDGAR → -
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Kroeker secured over $2 billion in capital and financing commitments as CFO, including the Cerberus Delayed Draw Term Loan and Department of Energy Loan Guarantee.
Exhibit 99.1 view on EDGAR →
Summary
Eos Energy reorganized its commercial operations by appointing Michelle Buczkowski as Chief Commercial Officer effective August 24, 2026. The new structure consolidates sales, business development, government affairs, marketing, and communications under one leader, reflecting the company's view that energy policy influences commercial conversations and customer decisions on storage projects. Buczkowski previously served as Chief Administrative Officer since November 2025, where she secured a $24 million Pennsylvania grant for manufacturing expansion and positioned Eos for selection into the Golden Dome program.
Nathan Kroeker, who joined as CFO in January 2023 and became CCO in 2025, will depart October 20, 2026 after a transition period. During his CFO tenure, Kroeker secured over $2 billion in capital and financing commitments, including the Cerberus Delayed Draw Term Loan and Department of Energy Loan Guarantee. As CCO, he expanded engagement with developers, utilities, hyperscalers, and strategic partners while growing the order backlog and opportunity pipeline.The planned transition period through October 20 is designed to ensure continuity in the commercial organization.
Section-by-Section Diff
Event · Item 5.02 — Departure of Directors or Certain Officers; Election of Directors; Compensation
Chief Commercial Officer transition: Michelle Buczkowski appointed CCO with increased compensation; Nathan Kroeker departing after transition period.
Added in current filing · verify on EDGAR →
Nathan Kroeker, the Company's Chief Commercial Officer, will remain with the Company through October 20, 2026 to support an orderly transition and will depart the Company following such transition period.
Nathan Kroeker, the outgoing Chief Commercial Officer, will stay through October 20, 2026 to facilitate the transition before departing. A separation agreement is anticipated but terms have not been finalized as of this filing.
Event · Exhibit 99.1
Eos appoints Michelle Buczkowski as Chief Commercial Officer; Nathan Kroeker to depart after transition period ending October 20, 2026.
Added in current filing · view on EDGAR →
Eos Energy Enterprises, Inc. (NASDAQ: EOSE) (“Eos” or the “Company”), America’s leading innovator in designing, manufacturing, and providing zinc- based long-duration energy storage (LDES) systems sourced and manufactured in the United States, today announced the appointment of Michelle Buczkowski as Chief Commercial Officer, effective August 24, 2026. Buczkowski succeeds Nathan Kroeker, who will leave the Company on October 20, 2026, following a planned transition period.
Michelle Buczkowski was appointed Chief Commercial Officer effective August 24, 2026, succeeding Nathan Kroeker. Kroeker, who joined as CFO in January 2023 and became CCO in 2025, will depart the company on October 20, 2026 after a transition period. Buczkowski previously served as Chief Administrative Officer since November 2025.
Added in current filing · verify on EDGAR →
Sales, business development, government affairs, marketing, and communications now report to Buczkowski, who owns the path from first customer engagement through order intake and revenue conversion.
The Chief Commercial Officer role now consolidates sales, business development, government affairs, marketing, and communications under one leader. This organizational structure reflects the company's view that federal, state, and local energy policy influences commercial conversations and customer decisions on storage projects.
Added in current filing · view on EDGAR →
Buczkowski has served as Chief Administrative Officer since November 2025, leading government affairs, marketing, communications, and human resources. She secured the $24 million Pennsylvania grant behind the Company’s manufacturing expansion, built the workforce pipeline that staffs it, and led the engagement that positioned Eos for selection into the Golden Dome program.
As Chief Administrative Officer, Buczkowski secured a $24 million Pennsylvania grant for manufacturing expansion, developed the workforce pipeline, and led engagement that resulted in selection for the Golden Dome program. She brings over 20 years of energy-sector leadership from prior roles at Duquesne Light Company and Consol Energy/CNX Resources.
Added in current filing · view on EDGAR →
Kroeker joined Eos in January 2023 as Chief Financial Officer and became Chief Commercial Officer in 2025. As Chief Financial Officer, he led the financing work that secured over $2 billion in capital and financing commitments, including the Cerberus Delayed Draw Term Loan and the Department of Energy Loan Guarantee, re-capitalizing the business and strengthening the balance sheet through the Company’s manufacturing scale-up.
During his tenure as CFO, Kroeker secured over $2 billion in capital and financing commitments, including the Cerberus Delayed Draw Term Loan and Department of Energy Loan Guarantee. As CCO, he expanded engagement with developers, utilities, hyperscalers, and strategic partners while growing the company's order backlog and opportunity pipeline.
Show 1 minor / wording change
Added in current filing · view on EDGAR →
Buczkowski and Kroeker will work together through October 20, 2026, to complete the transition.
The company has established a planned transition period running through October 20, 2026, during which both executives will work together to ensure continuity in the commercial organization.
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Figures/quotes linked to EDGAR · Narrative written by AI · Aug 25, 2026 · How we verify