Every 8-K that Amprius Technologies, Inc. (AMPX) has filed with the SEC in the last 24 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 8-K covers material events a company has to report between its quarterly reports, so if you follow AMPX and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full AMPX filings page.
Amprius Technologies, Inc. entered into a Second Amendment to its Industrial Lease Agreement for its facility at 1000-1180 Page Avenue, Fremont, California, with Los Altos Fields, LLC. The amendment extends the lease term, previously ending June 30, 2027, by 84 months, from July 1, 2027 through June 30, 2034.
The company receives two additional five-year extension options, subject to existing lease terms. Base rent during the extended term will escalate annually under a specified rent schedule, and Amprius will continue paying its percentage share of operating expenses. Total future lease payments under the amended lease are expected to be approximately $10.5 million.
Amprius Technologies, Inc. reported second‑quarter 2026 results with record revenue of $34.0 million, up 126% from $15.1 million a year earlier. Gross profit increased to $9.3 million and gross margin expanded to 27%, while GAAP net loss attributable to common stockholders narrowed to $5.1 million or $0.04 per share.
Excluding a $1.9 million non‑cash warrant exchange impact, net loss was $3.2 million and non‑GAAP Adjusted EBITDA improved to $(1.0) million. The company cited demand from drone and e‑mobility customers, including a multi‑year Stark Future contract expected to exceed $100 million and a $24.0 million order from a European drone developer.
For 2026, Amprius now expects at least $140.0 million in revenue and gross margin of at least 28%, with net loss under $10.0 million, net loss per share under $0.08, and positive non‑GAAP Adjusted EBITDA of at least $4.0 million.
Amprius Technologies, Inc. held its 2026 annual meeting of stockholders on June 11, 2026. Stockholders elected Kathleen Bayless and Thomas M. Stepien as directors to serve until the 2029 annual meeting of stockholders or until their successors are elected and qualified.
Bayless received 50,367,535 votes for and 20,194,821 votes withheld, while Stepien received 53,880,993 votes for and 16,681,363 votes withheld, with 26,519,800 broker non-votes for each. Stockholders also ratified Deloitte & Touche LLP as independent registered public accounting firm for the fiscal year ending December 31, 2026, with 96,014,911 votes for, 85,854 against and 981,391 abstentions.
Amprius Technologies filed an amendment to update details on its recently completed warrant-for-share exchange. On May 18 and May 19, 2026, the company issued an aggregate of 2,726,631 shares of common stock to institutional holders in exchange for 7,128,458 public warrants, which were surrendered and cancelled.
The shares were issued as unregistered securities in private transactions relying on Section 4(a)(2) of the Securities Act, meaning they cannot be freely resold in the United States without an effective registration statement or a valid exemption.
Amprius Technologies, Inc. entered into Warrant Exchange Agreements with certain institutional holders of its public warrants. These holders agreed to exchange an aggregate of 7,128,458 public warrants, each with a strike price of $11.50 per share, for shares of common stock.
The number of shares each holder receives will be based on a formula using the four-day average volume-weighted average price of the common stock, adjusted by adding $0.35 and subtracting the exercise price, then dividing by the same average price. Closing of the exchanges is expected on May 18, 2026, subject to customary conditions, and the unregistered issuance of these shares relies on the Section 4(a)(2) exemption under the Securities Act.
Amprius Technologies reported strong growth for Q1 2026, with revenue of $28.5 million, up 2.5x from $11.3 million a year earlier, and record quarterly sales. GAAP gross margin reached 20%, turning from a negative margin of (21%) in Q1 2025 as gross profit rose to $5.7 million.
The company still posted a net loss of $5.0 million, but this improved 46% from $9.4 million, with net loss per share narrowing to $0.04 from $0.08. Non-GAAP Adjusted EBITDA was ($1.8) million, a $3.4 million year-over-year improvement.
Management raised its 2026 revenue outlook to at least $130 million and reiterated targets for full-year net loss below $8.0 million, net loss per share under $0.06, Adjusted EBITDA of at least $4.0 million, and capital expenditure under $10.0 million. Business highlights included a $21.0 million light electric vehicle purchase order and expansion of U.S. defense and contract manufacturing relationships.
Amprius Technologies, Inc. is changing its independent auditor. The audit committee approved the engagement of Deloitte & Touche LLP to audit the company’s consolidated financial statements for the year ending December 31, 2026, effective April 21, 2026.
On April 17, 2026, the audit committee dismissed BDO USA, P.C., which had audited the company for the years ended December 31, 2025 and 2024. BDO’s prior reports did not contain adverse or disclaimed opinions and were not qualified or modified as to audit scope or accounting principles, and the company states there were no disagreements and no reportable events under Regulation S-K Item 304.
Amprius Technologies reported very strong growth for 2025, with revenue rising 202% to $73.0 million and fourth-quarter revenue up 137% year over year to $25.2 million. Q4 gross margin improved to 24%, supporting the company’s first positive quarterly non-GAAP adjusted EBITDA of $1.8 million.
Full-year net loss was $44.0 million, including a $22.5 million impairment tied to a terminated Colorado facility; excluding this, adjusted net loss was $21.5 million and adjusted EBITDA was $(5.3) million. Management expects at least $125.0 million of revenue in 2026, net loss under $8.0 million, and at least $4.0 million of positive adjusted EBITDA, reflecting confidence in its contract manufacturing model and growing defense and aerospace demand.
Amprius Technologies has terminated its lease for approximately 774,155 rentable square feet at a Colorado property in Brighton. The lease termination agreement with Starboard Platform Brighton JV, LLC became effective on January 31, 2026, releasing both parties from most future obligations under the lease.
To end the 15-year lease, which began in June 2024, Amprius paid a $20,000,000 termination fee. The landlord will return the company’s security deposit, currently held as a $1,200,000 letter of credit, on or before February 5, 2026. The company’s base rent for the Colorado property was approximately $300,000, plus about $190,000 in additional rent for operating expenses, insurance, and real estate taxes, with base rent subject to annual increases of about 3.3%.
Amprius Technologies, Inc. reported that it has completed all sales under its at-the-market equity offering program. The program, established under a sales agreement with B. Riley Securities, Cantor Fitzgerald and H.C. Wainwright, authorized offers of common stock up to an aggregate offering price of $100.0 million.
The company issued a total of 25.5 million shares of common stock through this program, generating aggregate net proceeds of approximately $97.5 million. During the three months ended December 31, 2025, Amprius sold additional shares for aggregate net proceeds of about $19.6 million at an average price of $11.17 per share, at which point the program was concluded and the sales agreement terminated in accordance with its terms.
Amprius Technologies announced a leadership transition. Chief Executive Officer Dr. Kang Sun told the board he will step down from his officer role effective December 31, 2025, and become Executive Advisor on January 1, 2026, while remaining on the board. The company states his decision is not due to any disagreement over operations, policies, or practices.
Amprius entered into a new employment agreement with Dr. Sun, giving him a $633,000 annual salary without bonus eligibility and providing six months of salary continuation and partial accelerated equity vesting if he is terminated without cause, resigns for good reason, or upon death or disability, with full stock option vesting if this occurs in connection with a change in control. Current President Tom Stepien has been appointed Chief Executive Officer effective January 1, 2026, with a $633,000 base salary, a target annual cash bonus equal to 100% of salary, and a grant of 200,000 restricted stock units that vest over four years.
Amprius Technologies (AMPX) reported that it announced its business and financial results for the third fiscal quarter ended September 30, 2025. The company furnished a Letter to Shareholders as Exhibit 99.1 to a Form 8-K under Item 2.02.
The information in Item 2.02 and Exhibit 99.1 is furnished, not filed, is not subject to Section 18 of the Exchange Act, and is not incorporated by reference unless expressly stated.
Amprius Technologies, Inc. (AMPX) appointed Matthew Rodriguez as Chief Financial Officer and engaged outgoing CFO Ms. Wallach as a consultant to support transition. Mr. Rodriguez will receive an annual base salary of $451,000, a one-time sign-on bonus of $80,000 (repayable if he voluntarily leaves within 12 months), and relocation/temporary housing support up to $50,000 (also subject to repayment). He becomes eligible for an annual cash bonus beginning in 2026 with a target equal to 65% of base salary, based on Board-determined performance goals.
Equity compensation includes 200,000 restricted stock units granted with an October 6, 2025 grant date: 25% vests after one year and the remainder vests quarterly over three years, subject to continued employment. If terminated without Cause (or for Good Reason by Mr. Rodriguez) he is eligible for three months of base-salary continuation upon execution of a release. Ms. Wallach will provide transitional CFO services at $200 per hour under a consulting agreement.
Amprius Technologies, Inc. announced that Chief Financial Officer Sandra Wallach intends to retire from her role. Her retirement will become effective upon the appointment of a successor, which is expected by or before the end of the fourth quarter of 2025.
The company states that her decision is not due to any disagreement related to operations, policies, or practices. After stepping down as CFO, she plans to remain involved with Amprius in a consulting or other capacity to help ensure a smooth transition.
The Board of Directors has begun a formal process to identify and recruit the next Chief Financial Officer, aiming for continuity in financial leadership as this planned transition moves forward.