Highest-materiality recent filing
Amprius extends Fremont facility lease to June 2034, adds 84 months
Lease term extended 84 months to June 30, 2034; two 5-year extension options remain.
Amprius Q2 revenue $34M, up 126% YoY; raises FY2026 revenue outlook to at least $140M
Q2 revenue $34.0M (+126% YoY); net loss $5.1M improved from $6.4M; adjusted net loss $3.2M excluding $1.9M warrant impact.
Amprius Technologies shareholders elect Bayless and Stepien, ratify Deloitte as auditor
Kathleen Bayless elected with 50,367,535 votes for, 20,194,821 withheld.
Amprius issues 2.7M shares in exchange for cancellation of 7.1M public warrants
Issued 2,726,631 Exchange Shares on May 18-19, 2026 to institutional warrant holders.
Amprius exchanges 7.1M public warrants for common stock; closing May 18, 2026
7,128,458 public warrants (exercise $11.50) exchanged for shares; closing expected May 18, 2026.
Amprius Q1 revenue $28.5M, up 2.5x YoY; raises 2026 revenue outlook to at least $130M
Q1 revenue $28.5M, up 2.5x from $11.3M YoY; net loss improved 46% to $5.0M from $9.4M.
Amprius Tech dismisses BDO, appoints Deloitte as auditor for FY2026
Audit Committee dismissed BDO USA, P.C. effective Apr 17, 2026; Deloitte & Touche LLP engaged for FY2026 audit.
Amprius Q4 revenue $25.2M (+137% YoY); guides 2026 revenue >=$125M, positive EBITDA
Q4 revenue $25.2M, up 137% YoY; full-year revenue $73.0M, up 202% from $24.2M in 2024.
Amprius Technologies terminates Colorado lease with $20M termination fee
Lease termination for 774,155 sq ft facility in Brighton, CO effective Jan 31, 2026.
Amprius completes $100M ATM equity offering, net proceeds ~$97.5M from 25.5M shares
Raised ~$97.5M net from sale of 25.5M shares under ATM program originally capped at $100M.
Amprius CEO Kang Sun steps down Dec 31; President Tom Stepien appointed CEO effective Jan 1, 2026
CEO Kang Sun to step down effective Dec 31, 2025; remains on Board as Executive Advisor from Jan 1, 2026.
Amprius Q3 revenue $21.4M (+173% YoY); gross margin positive, backlog $53.3M
Revenue $21.4M (+42% QoQ, +173% YoY); gross margin improved to 15% from 9%.
Amprius Technologies appoints Ricardo Rodriguez as CFO; Sandra Wallach retires
Ricardo Rodriguez appointed CFO effective Oct 6, 2025; Sandra Wallach retired same day.
CFO Sandra Wallach to retire; successor search underway, expected by Q4 2025
CFO Sandra Wallach informed Board of intention to retire, effective upon appointment of successor.
Amprius Q2 revenue $15.1M (record), first positive gross margin 9%, net loss $6.4M
Q2 revenue $15.1M, up 34% QoQ and 350% YoY; product revenue $14.5M (335% YoY).
Amprius stockholders elect directors, ratify auditor at 2025 annual meeting
Directors elected: Donald R. Dixon (43,025,547 for, 6,600,704 withheld) and Dr. Kang Sun (45,168,762 for, 4,457,489 withheld); 25,132,092 broker non-votes.
Amprius Q1 revenue $11.3M (+383% YoY); net loss $9.4M; adds 46 new customers
Revenue $11.3M, up 6% sequentially and 383% YoY, driven by 600%+ increase in SiCore shipments.
Amprius appoints Tom Stepien as President, effective May 1, 2025
Tom Stepien, 64, appointed President and elected as Class I director; CEO Kang Sun remains.
Amprius Q4 revenue $10.6M (+170% YoY); full-year revenue $24.2M; net loss $0.10 EPS
Q4 product revenue of $10.3M, up 71% sequentially and nearly 1,000% YoY; gross margin improved to -21% from -98% in year-ago quarter.
Amprius reports preliminary Q4 revenue ~$10.5M; FY loss ~$44.8M
Q4 2024 revenue expected $10.4-10.6M; net loss $11.4-11.6M; loss per share $0.10-0.11.
Amprius Q3 revenue hits $7.9M, doubling Q2; net loss $0.10 per share
Revenue $7.9M, up 81% sequentially and 176% YoY; product revenue $6.1M.
Amprius Technologies regains NYSE minimum bid price compliance
On Nov 1, 2024, NYSE notified Amprius that it regained compliance with the $1.00 minimum average closing price over 30 consecutive trading days.
Amprius preliminary Q3 revenue $7.6-7.9M, net loss $10.8-11.8M, cash $35M
Revenue expected $7.6M-$7.9M; net loss $10.8M-$11.8M; loss per share $0.10-$0.11.
Majority stockholder Amprius Holdings liquidates, distributes 57.2M shares to stockholders
Amprius Holdings dissolved; distributed 57,195,926 shares of common stock pro rata to its stockholders.
Amprius (AMPX) NYSE notice: average closing price below $1.00 over 30 days
Received NYSE deficiency notice on Sep 19, 2024 under Section 802.01C for stock price non-compliance.
Director Justin Mirro resigns from Amprius Technologies Board
Justin Mirro resigned from the Board and all committees, effective September 6, 2024.
Amprius board member Gustanski resigns; Satterthwaite elected as Class II director
Mary Gustanski resigned from Amprius board effective Aug 12, 2024; no disagreement with company.
Amprius Q2 revenue $3.3M (+105% YoY); net loss $12.5M; gross margin -195%
Revenue $3.3M (all product), up 105% YoY and 43% sequentially; net loss $12.5M ($0.13 loss per share).
Amprius shareholders elect three directors and ratify BDO as auditor at 2024 annual meeting
Elected Dr. Steven Chu (74.1M for), Mary Gustanski (75.0M for), and Justin Mirro (74.4M for) to three-year terms.
Amprius reduces warrant exercise price to $1.10 from $11.50 through June 11, 2024
Warrant Agreement Amendment temporarily lowers cash exercise price of public and private warrants to $1.10 per share.
Amprius Q1 revenue $2.3M, up 397% YoY; shipped to 82 customers, double Q4
Product revenue $2.3M (all product; no dev services); 147% sequential increase.
Amprius shifts Colorado plant first line to SiCore batteries; targets up to 5 GWh capacity
First production line at Brighton, CO facility will produce SiCore batteries due to strong market reception.
Amprius Q4 revenue $3.9M, up from $0.8M YoY; full-year net loss $36.8M
Q4 revenue $3.9M (+$3.1M YoY, +$1.1M seq.); full-year 2023 revenue $9.1M, over 100% growth from 2022.
Amprius launches SiCore battery platform, secures exclusive silicon anode supply from Berzelius
New SiCore platform alongside existing SiMaxx silicon nanowire platform announced Jan 16, 2024.
Amprius Q3 revenue $2.8M, net loss $8.5M; customer count rises to 38
Revenue $2.8M (+$2.0M YoY, +$1.2M QoQ); product revenue $2.2M; gross margin -152% vs -185% last year.
Amprius Technologies and Amprius Inc. terminate merger agreement; special meeting cancelled
Merger Agreement terminated mutually effective October 21, 2023; no further force or effect.
Amprius enters $100M ATM sales agreement, terminates prior $200M equity facility
Company entered At Market Issuance Sales Agreement with B. Riley, Cantor, H.C. Wainwright to sell up to $100M of common stock.
Amprius Technologies reschedules special meeting for merger vote to October 24, 2023
Special meeting of stockholders to vote on merger with Holdco rescheduled to October 24, 2023.
Amprius Q2 revenue $1.6M, net loss $9.4M; record 27 customers
Revenue $1.6M (up 136% YoY); product revenue up $0.6M to $1.3M; development services $0.3M.
Amprius and Holdco postpone special meeting to vote on merger
Special meeting originally set for July 26, 2023 rescheduled to a later date.
Amprius Technologies elects Mary Gustanski as Class II director
Mary Gustanski elected to Board as Class II director, term expiring at 2024 annual meeting.
Amprius and DOE discontinue $50M cost-sharing grant contract negotiation
On June 1, 2023, Amprius and U.S. DOE mutually agreed to end negotiations for a $50M cost-sharing grant.
Amprius Q1 revenue falls 67% to $0.7M; announces merger with controlling stockholder
Revenue $0.7M (down 67% YoY); net loss $9.1M ($0.11 EPS) vs $2.9M loss in Q1 2022.
Amprius Technologies enters merger to eliminate majority stockholder Holdco structure
Holdco owns 77.1% of Amprius common stock; merger will dissolve holding company structure.
Amprius Technologies elects Kathleen Ann Bayless to Board of Directors
Elected Kathleen Ann Bayless as Class I director; term expires at 2023 annual meeting.
Lease for 774,155 sq ft at 18875 E Bromley Lane, Brighton, CO, 180-month term starting June 1, 2024.
Amprius FY2022 rev $4.4M, net loss $17.3M; 500 Wh/kg batteries verified, plans Colorado gigafactory
FY2022 revenue $4.4M (product $2.4M, development $1.8M); net loss $17.3M ($0.24 diluted EPS).
Amprius Technologies names COO Jonathan Bornstein as President of Amprius Lab
Jonathan Bornstein's title changed from COO to President of Amprius Lab effective March 6, 2023.
Amprius Technologies sets 2023 annual meeting for June 8, 2023
First annual meeting since September 2022 business combination with Kensington Capital Acquisition Corp. IV.
Amprius Technologies approves 2022 bonuses and raises for CEO, CFO, CTO
2022 bonuses: CEO Dr. Kang Sun $370,875, CFO Sandra Wallach $155,756, CTO Dr. Ionel Stefan $150,075.
On April 22, 2025, the board of directors of the Company (the "Board") also elected Mr. Stepien to serve as a Class I director, effective May 1, 2025.
On April 23, 2025, Amprius Technologies, Inc. (the "Company") announced that Mr. Tom Stepien, had been appointed President of the Company.
On September 6, 2024, Justin Mirro resigned from his position as a member of the Board of Directors (the “Board”) of Amprius Technologies, Inc. (the “Company”) and from all of its committees, which resignation was effective on that date.
On August 12, 2024, Mary Gustanski resigned from her position as a member of the Board of Directors (the “Board”) of Amprius Technologies, Inc. (the “Company”) and from all of its committees and advisory councils, which resignation was effective on that date.
On August 13, 2024, the Board elected Livingston “Tony” Satterthwaite to serve as a Class II director to fill the vacancy created by Ms. Gustanski's resignation.
the Board of Directors (the “Board”) of Amprius Technologies, Inc. (the “Company”) elected Mary Gustanski to serve as a Class II director.
On April 25, 2023, the Board of Directors (the "Board") of Amprius Technologies, Inc. (the "Company") elected Kathleen Ann Bayless to serve as a Class I director.
On March 6, 2023, Amprius Technologies, Inc. (the “Company”) announced a change in Jonathan Bornstein’s officer title from Chief Operating Officer to President of Amprius Lab, in conjunction with the Company’s formation of two business units.
On March 1, 2022, in connection with the IPO, Thomas LaSorda, Nicole Nason, Anders Pettersson, Mitchell Quain, Donald L. Runkle and Matthew Simoncini (the “New Directors” and, collectively with Justin Mirro, the “Directors”) were appointed to the board of directors of the Company (the “Board”).
On March 1, 2022, in connection with the IPO, Thomas LaSorda, Nicole Nason, Anders Pettersson, Mitchell Quain, Donald L. Runkle and Matthew Simoncini (the “New Directors” and, collectively with Justin Mirro, the “Directors”) were appointed to the board of directors of the Company (the “Board”).
On March 1, 2022, in connection with the IPO, Thomas LaSorda, Nicole Nason, Anders Pettersson, Mitchell Quain, Donald L. Runkle and Matthew Simoncini (the “New Directors” and, collectively with Justin Mirro, the “Directors”) were appointed to the board of directors of the Company (the “Board”).
On March 1, 2022, in connection with the IPO, Thomas LaSorda, Nicole Nason, Anders Pettersson, Mitchell Quain, Donald L. Runkle and Matthew Simoncini (the “New Directors” and, collectively with Justin Mirro, the “Directors”) were appointed to the board of directors of the Company (the “Board”).
Max materiality 0.85 · Median 0.62 · Most common event earnings