Eos Energy Enterprises, Inc. — fact timeline

Haiyan Song was appointed as Class III director at Eos Energy Enterprises, Inc..

“On July 9, 2026, the Board appointed Haiyan Song, age 60, to the Board.”

Nathaniel Fick was elected as preferred stock director at Eos Energy Enterprises, Inc..

“Nathaniel Fick will succeed Mr. Nixon as a preferred stock director of the Board, effective July 8, 2026.”

Nathaniel Fick resigned as Class III director at Eos Energy Enterprises, Inc..

“On July 8, 2026, Nathaniel Fick resigned from his role as a Class III director of the Board, effective July 8, 2026, to accept an appointment as preferred stock director of the Board.”

Greg Nixon resigned as preferred stock director at Eos Energy Enterprises, Inc..

“On July 8, 2026, Greg Nixon resigned from his role as a preferred stock director of the Board of Directors (the “Board”) of Eos Energy Enterprises, Inc. (the “Company”), effective July 8, 2026, to devote more time to other business ventures.”

Eos Energy Enterprises, Inc. shareholders approved Approval of an amendment to the Company’s Second Amended and Restated 2020 Incentive Plan at the 2026-06-03 meeting.

“Proposal 5 – Approval of an amendment to the Company’s Second Amended and Restated 2020 Incentive Plan An amendment to the Company’s Second Amended and Restated 2020 incentive plan was approved by stockholders, with 130,467,068 shares voted in favor, 43,914,568 shares voted against, 2,107,069 shares abstained, and broker non-votes totaling 86,942,996.”

Eos Energy Enterprises, Inc. shareholders approved Approval of an amendment to the Company's Certificate of Incorporation to increase the number of shares of authorized common stock at the 2026-06-03 meeting.

“Proposal 4 - Approval of an amendment to the Company's Certificate of Incorporation to increase the number of shares of authorized common stock An amendment to the Company's Certificate of Incorporation to increase the number of shares of authorized common stock was approved by stockholders, with 253,788,578 shares voted in favor, 8,570,879 shares voted against, and 1,072,244 shares abstained.”

Eos Energy Enterprises, Inc. shareholders approved Non-binding advisory vote to approve the compensation of named executive officers at the 2026-06-03 meeting.

“Proposal 3 – Non-binding advisory vote to approve the compensation of named executive officers The compensation of the named executive officers was approved, on an advisory basis, by stockholders, with 131,373,683 shares voted in favor, 43,181,305 shares voted against, 1,933,717 shares abstained, and broker non-votes totaling 86,942,996.”

Eos Energy Enterprises, Inc. shareholders approved Ratification of appointment of independent registered public accounting firm at the 2026-06-03 meeting.

“Proposal 2 – Ratification of appointment of independent registered public accounting firm The ratification of the selection of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for the 2026 fiscal year was approved by stockholders with 259,994,802 shares voted in favor, 1,596,992 shares voted against and 1,839,907 shares abstained.”

Eos Energy Enterprises, Inc. shareholders approved Election of Class III Directors at the 2026-06-03 meeting.

“Proposal 1 – Election of directors The Class III Directors proposed by management were elected with a tabulation of votes to the nearest share as shown below. For Against Abstained Broker Non-Vote Jeff Bornstein 169,956,787 5,846,225 685,693 86,942,996 Claude Demby 134,838,436 40,920,524 729,745 86,942,996 Nathaniel Fick 172,365,038 3,501,807 621,860 86,942,996”

Eos Energy Enterprises, Inc. reported first quarter ended March 31, 2026 results: revenue $57.0 million, net income $508.9 million. Guidance reaffirmed.

“today announced its financial results for the first quarter ended March 31, 2026. First Quarter Highlights • Revenue totaled $57.0 million”

Nathan Kroeker changed role as Chief Commercial Officer at Eos Energy Enterprises, Inc..

“In connection with Mr. Lagi’s appointment as Chief Financial Officer, Nathan Kroeker will cease serving as the interim Chief Financial Officer of the Company and will continue to serve as the Company’s Chief Commercial Officer.”

Alessandro Lagi was appointed as Chief Financial Officer at Eos Energy Enterprises, Inc..

“On April 30, 2026, Eos Energy Enterprises, Inc. (“Eos” and, together with its subsidiaries, the “Company”) announced that, effective June 8, 2026, Alessandro Lagi will be the new Chief Financial Officer of the Company.”

Eos Energy Enterprises, Inc. reported first quarter ended March 31, 2026 results: revenue $56 - $57 million.

“Eos Energy Enterprises, Inc. (NASDAQ: EOSE) ("Eos" or the "Company"), an American energy company and the leading innovator in designing, sourcing, manufacturing, and providing zinc-based battery energy storage systems (BESS), today announced that it expects to report preliminary first quarter 2026 revenue of $56 - $57 million”

Eos Energy Enterprises, Inc. entered into Second Amendment to Loan Guarantee Agreement with United States Department of Energy valued at Deferral of Consolidated Revenue and EBITDA financial covenants until March 31, 2027 (effective 2026-02-13).

“On February 13, 2026, the Company entered into that certain Second Amendment to Loan Guarantee Agreement (the “Second Amendment”), by and between the DOE and the Company, pursuant to which, among other things, the Loan Agreement was amended to defer the applicability of the Consolidated Revenue and EBITDA financial covenants in the Loan Agreement until the fiscal quarter ended March 31, 2027.”

Eos Energy Enterprises, Inc. entered into Indenture with Wilmington Trust, National Association valued at $600,000,000 (effective 2025-11-24).

“On November 24, 2025 (the “Closing Date”), Eos Energy Enterprises, Inc. (the “Company”) issued $600,000,000 aggregate principal amount of its 1.75% Convertible Senior Notes due 2031 (the “Notes”). The Notes were issued pursuant to, and are governed by, an indenture (the “Indenture”), dated as of the Closing Date, between the Company and Wilmington Trust, National Association, as trustee (the “Trustee”).”

Eos Energy Enterprises, Inc. incurred convertible notes of $600,000,000 aggregate principal amount at 1.75% maturing December 1, 2031.

“On November 24, 2025 (the “Closing Date”), Eos Energy Enterprises, Inc. (the “Company”) issued $600,000,000 aggregate principal amount of its 1.75% Convertible Senior Notes due 2031 (the “Notes”).”

Eos Energy Enterprises, Inc. issued up to 570,000 shares of Common Stock of warrant to DOE for $0.01 per share.

“the Company will issue to the DOE a warrant to purchase up to 570,000 shares of Common Stock of the Company (the “Warrant”) on the third business day following the date the DOE Limited Consent Agreement and Amendment becomes effective (the “Issue Date”). The Warrant will expire on the fifth anniversary of the Issue Date (the “Termination Date”). Upon issuance, the Warrant will entitle the DOE to purchase up to an aggregate of 570,000 shares of Common Stock of the Company (the “Warrant Shares”) at an exercise price of $0.01 per share, subject to certain adjustments as described below.”

Eos Energy Enterprises, Inc. incurred term loan of $22,665,635 with Federal Financing Bank.

“on July 1, 2025, the FFB funded $22,665,635 under the FFB Promissory Note (the “second loan advance”).”

Eos Energy Enterprises, Inc. faced acceleration on convertible notes of $126.0 million aggregate principal amount outstanding of the Company’s 5%/6% Convertible Senior PIK Toggle Note due 2026 maturing due 2026.

“On June 3, 2025, the Company used approximately $131.0 million of the net proceeds of the offering of the Notes to repurchase the full $126.0 million aggregate principal amount outstanding of the Company’s 5%/6% Convertible Senior PIK Toggle Note due 2026”

Eos Energy Enterprises, Inc. incurred convertible notes of $225,000,000 aggregate principal amount with Wilmington Trust, National Association at 6.75% per annum maturing June 15, 2030.

“On June 3, 2025 (the "Closing Date"), Eos Energy Enterprises, Inc. (the "Company") issued $225,000,000 aggregate principal amount of its 6.75% Convertible Senior Notes due 2030”

Nathan Kroeker was appointed as Interim Chief Financial Officer at Eos Energy Enterprises, Inc..

“Effective as of May 27, 2025, the Company appointed its current Chief Commercial Officer, Nathan Kroeker, the Company’s former CFO, as the Company’s interim CFO”

Eric Javidi was terminated as Chief Financial Officer at Eos Energy Enterprises, Inc..

“On May 27, 2025, Eos Energy Enterprises, Inc. (the “Company”) terminated the employment of its Chief Financial Officer (“CFO”), Eric Javidi, effective immediately.”

Eric Javidi was appointed as Chief Financial Officer at Eos Energy Enterprises, Inc..

“Effective immediately upon the transition of Mr. Kroeker to his new role at the Company, the Company appointed Eric Javidi to be the Company’s new Chief Financial Officer.”

Nathan Kroeker changed role as Chief Commercial Officer at Eos Energy Enterprises, Inc..

“Nathan Kroeker will transition from his role as the Chief Financial Officer of the Company and become the Chief Commercial Officer of the Company.”

Eos Energy Enterprises, Inc.: Filed Certificate of Designation for Series B-4 Non-Voting Convertible Preferred Stock, establishing rights, preferences, and conversion terms (effective 2025-01-24).

“On January 24, 2025, the Company filed with the Secretary of State of the State of Delaware the Certificate of Designation of Series B-4 Non-Voting Convertible Preferred Stock of the Company attached hereto as Exhibit 3.1 (the “Series B-4 Certificate of Designation”).”

Eos Energy Enterprises, Inc.: Filed Certificate of Designation for Series B-3 Non-Voting Convertible Preferred Stock, establishing terms, rights, and preferences of the new series (effective 2024-11-01).

“On November 1, 2024, the Company filed with the Secretary of State of the State of Delaware the Certificate of Designation of Series B-3 Non-Voting Convertible Preferred Stock of the Company attached hereto as Exhibit 3.1 (the “Series B-3 Certificate of Designation”).”

Gregory Nixon was elected as Director at Eos Energy Enterprises, Inc..

“On July 24, 2024, pursuant to the terms of the Series A-1 Preferred Stock of Eos Energy Enterprises, Inc. (the “Company”), the holders of Series A-1 Preferred Stock elected Gregory Nixon to serve on the board of directors of the Company.”

Eos Energy Enterprises, Inc. reported first quarter ended March 31, 2024 results: revenue $6.6 million. Guidance reaffirmed.

“zinc-based long duration energy storage systems, today announced financial results for the first quarter ended March 31, 2024. First Quarter Highlights + Revenue totaled $6.6 million from its Z3 semi-automated manufacturing line, 25% lower than prior year period, driven by customer revenue recognition timing. + Cost of Goods Sold totaled $28.2 million, a 5%”

Eos Energy Enterprises, Inc. shareholders approved Approval of an amendment to the Company's Amended and Restated 2020 Incentive Plan at the 2024-05-01 meeting.

“Proposal 5 – Approval of an amendment to the Company’s Amended and Restated 2020 Incentive Plan An amendment to the Company’s Amended and Restated 2020 incentive plan was approved by stockholders, with 54,579,830 shares voted in favor, 41,955,672 shares voted against, 3,701,070 shares abstained, and broker non-votes totaling 53,499,227.”

Eos Energy Enterprises, Inc. shareholders approved Approval of an amendment to the Company's certificate of incorporation to increase the number of authorized shares of common stock at the 2024-05-01 meeting.

“Proposal 4 – Approval of an amendment to the Company's certificate of incorporation to increase the number of authorized shares of common stock An amendment to the Company's certificate of incorporation to increase the number of authorized shares of common stock was approved by stockholders, with 136,099,301 shares voted in favor, 16,303,423 shares voted against, and 1,333,075 shares abstained.”

Eos Energy Enterprises, Inc. shareholders approved Non-binding advisory vote to approve the compensation of named executive officers at the 2024-05-01 meeting.

“Proposal 3 – Non-binding advisory vote to approve the compensation of named executive officers The compensation of the named executive officers was approved, on an advisory basis, by stockholders, with 54,726,313 shares voted in favor, 41,020,673 shares voted against, 4,489,586 shares abstained, and broker non-votes totaling 53,499,227.”

Eos Energy Enterprises, Inc. shareholders approved Ratification of appointment of Deloitte & Touche LLP as independent registered public accounting firm for fiscal 2024 at the 2024-05-01 meeting.

“Proposal 2 – Ratification of appointment of independent registered public accounting firm The ratification of the selection of Deloitte & Touche LLP as the Company’s independent registered public accounting firm for the 2024 fiscal year was approved by stockholders with 151,886,673 shares voted in favor, 931,519 shares voted against and 917,607 shares abstained.”

Eos Energy Enterprises, Inc. shareholders approved Election of directors at the 2024-05-01 meeting.

“Proposal 1 – Election of directors The Class I Directors proposed by management were elected with a tabulation of votes to the nearest share as shown below. For Against Abstained Broker Non-Vote Marian “Mimi” Walters 65,260,521 31,735,193 3,240,858 53,499,227 Jeffrey McNeil 93,407,108 4,198,342 2,631,122 53,499,227”

Eos Energy Enterprises, Inc. reported first quarter ended March 31, 2024 results: revenue approximately $6.6 million.

“Eos expects to record revenue of approximately $6.6 million for the first quarter, as the Company completed shipments of its first Texas project owned by a large North American infrastructure fund.”

Eos Energy Enterprises, Inc. reported the full year ended December 31, 2023 results: revenue $16.4 million. Guidance initiated.

“Full Year Highlights + Revenue totaled $16.4 million, compared to $17.9 million in the prior year”

Eos Energy Enterprises, Inc. reported the fourth quarter ended December 31, 2023 results: revenue $6.6 million. Guidance initiated.

“Fourth Quarter Highlights + Revenue totaled $6.6 million; a 148% increase compared to prior year”

Eos Energy Enterprises, Inc. reported the fourth quarter and year ended December 31, 2023 results: revenue $6.6 million.

“storage systems, today announced that it achieved “Power On” status of all motion systems on its first state-of-the-art manufacturing line and expects to record revenue of $6.6 million for the fourth quarter, a 148% increase versus fourth quarter 2022. Full year 2023 revenue is expected to be $16.4 million as the Company transitioned manufacturing to the Eos Z3”

Eos Energy Enterprises, Inc. entered into Pricing Agreement with SHPP US LLC (Sabic) (effective 2024-01-31).

“On January 31, 2024, HI-POWER, LLC (“Hi-Power”), a wholly-owned subsidiary of Eos Energy Enterprises, Inc. (“Eos”), entered into a Pricing Agreement (“Pricing Agreement”) with SHPP US LLC (“Sabic”) to govern the pricing terms for sales of certain resin (the “Product”) to Hi-Power authorized purchasers by Sabic.”

Michael Willis Silberman was appointed as General Counsel, Chief Compliance Officer, and Corporate Secretary at Eos Energy Enterprises, Inc..

“the Board of Directors of the Company (the “Board”) appointed Michael Willis Silberman (age 53) to serve as the Company’s General Counsel, Chief Compliance Officer, and Corporate Secretary , effective January 31, 2024”

Melissa Berube departed as General Counsel, Chief Compliance Officer, and Corporate Secretary at Eos Energy Enterprises, Inc..

“Ms. Melissa Berube informed Eos Energy Enterprises, Inc. (the “Company”) of her resignation from her role as General Counsel, Chief Compliance Officer, and Corporate Secretary, effective as of January 31, 2024”

Eos Energy Enterprises, Inc. entered into Supply Agreement with TETRA Technologies, Inc. (effective 2024-01-08).

“On January 8, 2024, HI-POWER, LLC (“Hi-Power”), a wholly-owned subsidiary of Eos Energy Enterprises, Inc. (“Eos”), entered into an Amended and Restated Manufacturing Purchase and Supply Agreement (the “Supply Agreement”) with TETRA Technologies, Inc. (“TETRA”), a Delaware corporation, to govern the provision of TETRA PureFlow® zinc bromide and the manufacturing and provision of Eos’s proprietary electrolyte solution (collectively, the “Products”) by TETRA to Eos.”

Eos Energy Enterprises, Inc. entered into Underwriting Agreement with Cowen and Company, LLC and Stifel, Nicolaus & Company, Incorporated valued at Underwritten public offering of 34,482,759 common shares and 34,482,759 warrants at a combined publi (effective 2023-12-14).

“On December 14, 2023, Eos Energy Enterprises, Inc. (the “ Company ”) entered into an underwriting agreement (the “ Underwriting Agreement ”) with Cowen and Company, LLC and Stifel, Nicolaus & Company, Incorporated as representatives of the several underwriters named therein (collectively, the “ Underwriters ”), relating to an underwritten public offering (the “ Offering ”) of 34,482,759 common shares (the “ Shares ”) of the Company’s common stock , par value $0.0001 per share (the “ Common Stock ”) and 34,482,759 warrants (the “ Warrants ”) to purchase up to an aggregate of 34,482,759 shares of Common Stock (the “ Warrant Shares ”), at a combined public offering price of $1.45 per Share and accompanying Warrant.”

Eos Energy Enterprises, Inc. reported third quarter ended September 30, 2023 results: revenue $0.7 million. Guidance reaffirmed.

“sustainable zinc-based long duration energy storage systems, today announced financial results for the third quarter ended September 30, 2023. Key Highlights + Revenue totaled $0.7 million, compared to $6.1 million in 3Q 2022, as the Company began commercial production and shipped the first Eos Z3 energy storage systems. + $21.3 million Cost of Goods Sold, a 57%”

Jeffrey McNeil was appointed as Director at Eos Energy Enterprises, Inc..

“On October 6, 2023, the Board of Directors of Eos Energy Enterprises, Inc. (the “Company”) appointed Jeffrey McNeil, age 62, to the Board of Directors.”

Sumeet Puri was appointed as Chief Accounting Officer at Eos Energy Enterprises, Inc..

“On August 25, 2023, the Board of Directors of the Company (the “Board”) appointed Sumeet Puri (age 50) to serve as the Company’s Chief Accounting Officer, effective September 5, 2023”

Eos Energy Enterprises, Inc. terminated Standby Equity Purchase Agreement with YA II PN, Ltd. valued at up to $75.0 million (effective 2023-08-23).

“the Company and YA II PN, Ltd. ("Yorkville"), an affiliate of Yorkville Advisors, terminated the Standby Equity Purchase Agreement dated as of April 28, 2022, as amended (the "SEPA") by the mutual written consent of the parties, effective as of August 23, 2023.”

Eos Energy Enterprises, Inc. entered into Master Supply Agreement with ACRO Automation Systems, Inc. valued at $17,154,300 (effective 2023-08-23).

“Supply Agreement On August 23, 2023, HI-POWER, LLC (“Hi-Power”), a wholly-owned subsidiary of the Company, entered into a Master Supply Agreement (the “Supply Agreement”) with ACRO Automation Systems, Inc.”

Eos Energy Enterprises, Inc. amended Amended Sales Agreement with Cowen and Company, LLC valued at from $100,000,000 to $200,000,000 (effective 2023-08-23).

“1, the “Amended Sales Agreement”) with Cowen and Company, LLC (“TD Cowen”), to increase the aggregate offering price of the shares of the Company’s common stock, $0.0001 par value per share (the “Common Stock”), that may be offered and sold from time to time in an at the market offering program,from $100,000,000 to $200,000,000 (the “Placement Shares”) through TD Cowen as its sales agent and/or principal.”

Eos Energy Enterprises, Inc. reported the quarter ended June 30, 2023 results: revenue $0.2 million.

“efficient, and sustainable zinc-based long duration energy storage systems, today announced financial results for the second quarter ended June 30, 2023. Key Highlights † $0.2 million of revenue, compared to $5.9 million in 2Q 2022, as the Company strategically transitions manufacturing to the Eos Z3TM energy storage system. † Cost of Goods Sold of $11.2”

Eos Energy Enterprises, Inc. reported second quarter ended June 30, 2023 results: revenue $0.2 million.

“or the “Company”), a leading provider of safe, scalable, efficient, and sustainable zinc-based energy storage systems, today announced that it expects to record revenue of $0.2 million for the quarter ended June 30, 2023, as the Company transitions manufacturing to the Eos Z3TM battery, with expected second quarter gross margin to improve by 20% to 50% over the”