Velarion · Company Intelligence
Compensation Brief
Fiscal year 2025 · Filings through 2026-04-29

Amprius Technologies (AMPX)

CEO Thomas Stepien was paid $3,354,715 in fiscal year 2025 (SEC filing 0001899287-26-000026 ↗): executive and director compensation, incentive-plan design, equity activity, and governance — every figure in this brief is traceable to its exact location in the company’s SEC filing — the document, the section, the page, and the table, linked directly.

$3,354,715
Thomas Stepien total, FY2025
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CEO pay percentile vs peers
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CEO-to-median pay ratio
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Say-on-pay support, latest vote

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Sample answer — “What is the CEO’s total compensation?”
- Thomas Stepien (President, Chief Executive Officer), FY2025 total compensation $3,354,715 (base salary $319,712) [exec_comp, SEC accession 0001899287-26-000026, filed 2026-04-29]

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AMPX's next annual pay disclosure, estimated May 3, 2027.est. Filing ↗

01

Summary Compensation Table — fiscal year 2025

Named executive officerSalaryBonusStock awardsOption awardsNon-equity incentivePension / NQDCAll otherTotal
Thomas Stepien$319,712$238,292$2,746,000$0$0$0$50,711$3,354,715
President, Chief Executive Officer
Ricardo Rodriguez109,282158,7842,688,00000026,0282,982,094
Chief Financial Officer
Kang Sun633,000680,4751,318,6800006002,632,755
Executive Advisor

A dash means the company reported no figure in that column; 0 means it reported zero. Figures are as printed in the filing, without adjustment.

Three-year trend — total compensation per named executive

Named executive officerFY2025 totalFY2024 totalFY2023 totalΔ FY2024→2025
Thomas Stepien$3,354,715———
Ricardo Rodriguez2,982,094———
Kang Sun2,632,7555,655,5091,248,690↓ −3,022,754

Prior-year totals as disclosed in the corresponding proxy; deltas are computed values with the derivation shown in the register.

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Companies that benchmark against AMPX
2 companies name AMPX as a compensation peer

Each company listed discloses AMPX in its own benchmarking peer group, as disclosed in each company's most recent proxy statement within the last two proxy seasons. Two companies are therefore absent by design: one that named AMPX in an earlier year and no longer does, and one whose own most recent disclosure is older than the last two seasons.

01b

Executives — the named officers

One page per officer: the same table above, read for one person at a time — his own figure and every fiscal year the register holds.

ExecutiveRoleFY2025 total
Ricardo RodriguezCFO$2,982,094
Kang SunExecutive Advisor$2,632,755
Thomas StepienCEO$3,354,715
02

Equity transactions since the proxy statement was filed

No insider equity transactions reported since the proxy statement.

03

Grants of plan-based awards — fiscal year 2025

ExecutiveAwardGrant dateThresholdTargetGrantedMaximumGrant-date fair value
Kang SunRSU2025-03-19——167,130—$1,318,680
Ricardo RodriguezRSU2025-03-19——340,684—2,688,000
Thomas StepienRSU2025-03-19——3,556,000—2,746,000
03b

Vehicle mix — grant-date fair value by award type

Named executive officerTime-vested (RSU)Performance-vested (PSU)Options / SARs% performance-vested
Kang Sun$1,318,680$0$00.0%
Ricardo Rodriguez2,688,000000.0%
Thomas Stepien2,746,000000.0%

% performance-vested = PSU grant-date fair value ÷ (RSU + PSU + Options), a computed value with the derivation shown in the register.

04

Outstanding equity awards at fiscal year-end 2025

ExecutiveAwardShares unvestedExercise priceMarket value unvested
Kang SunRSU798,564—$6,300,670
Kang SunRSU487,012—3,842,525
Thomas StepienRSU400,000—3,156,000
Thomas StepienRSU200,000—1,578,000
Ricardo RodriguezRSU200,000—1,578,000
Kang SunOption15,1662.61—
Kang SunOption147,8632.61—
05

Incentive-plan design — the Compensation Discussion & Analysis

The company designs its compensation and benefits program to attract, retain, incentivize and reward deeply talented and qualified executives who share its philosophy and desire to work towards achieving company goals. The program is intended to promote company success and align executive incentives with the long-term interests of stockholders.

CEO STI target (% of salary)NaN%
CEO LTI target (% of salary)—
Independent consultantCompensia
Clawback policyAll awards under the Incentive Compensation Plan are subject to reduction, cancellation, forfeiture or recoupment in accordance with any clawback policy required by listing standards or the Dodd-Frank Act. The administrator may impose additional clawback, recovery or recoupment provisions.
Anti-hedgingEmployees, including executive officers, and board members are prohibited from engaging in short sales, trading in publicly-traded options, purchasing financial instruments to hedge or offset decreases in market value, or holding securities in a margin account.
Anti-pledgingEmployees, including executive officers, and board members are prohibited from pledging any of the company's securities as collateral for any loans.
06

Say-on-pay — recent advisory votes

Meeting yearMeeting dateForAgainstAbstainSupportOutcome
20222022-09-13—————

Rows are labeled by annual-meeting year, with the meeting date beside each; the vote held in a given year acts on the prior fiscal year's compensation.

Say-on-pay — history, company's computation

Meeting yearMeeting dateApproval — company's computation
20222022-09-13—a

a. Voting standard not stated in the filing.

Approval percentages are the company's own reported computations under its own stated standard, not recomputed by Velarion. Where a company does not state a standard, none is assumed.

07

CEO pay ratio

Ratio (CEO : median employee)—
CEO total compensation—
Median employee compensation—
08

Director compensation — fiscal year 2025

DirectorCash feesStock awardsOption awardsNon-equity incentiveAll otherTotal
Donald R. DixonIndependent · Audit · Compensation$105,000$169,998———$274,998
Dr. Wen HsiehIndependent · Audit · Compensation (Chair) · Not standing for re-election65,000169,998———234,998
Kathleen BaylessIndependent · Audit (Chair) · Newly elected60,000169,998———229,998
Dr. Steven ChuIndependent · Nominating and Corporate Governance (Chair)53,750169,998———223,748
Livingston SatterthwaiteIndependent · Audit · Compensation · Nominating and Corporate Governance55,00099,167———154,167
Thomas M. StepienEmployee director · Newly elected—————0
Kang SunEmployee director—————0
09

Board fee structure and ownership guideline

Annual cash retainer$50,000
Annual equity retainer$170,000
Per board meeting fee—
Committee chair fees (audit / comp / nom-gov)20,000 / 15,000 / 15,000
Stock ownership guideline—
09b

Total cost of the board

ComponentFY2025
Cash retainers and fees$338,750
Equity awards (grant-date value)$779,159
All other compensation$0
Total cost of the board$1,117,909

Computed as the sum of the director compensation table rows above; inputs and formula shown in the register.

10b

Chief executive pay against the peer group

Most recent fiscal-year chief executive compensation at each disclosed peer, taken from that company's own proxy statement.

RankCompanyFYChief executiveSalaryStock awardsOption awardsNon-equity incentiveTotal
1Amprius Technologies2025Thomas Stepien$319,712$2,746,000$0$0$3,354,715

Each peer's compensation is from its most recently filed proxy; fiscal years differ by company. Each peer's figures come from its own filings; the subject company is highlighted. Peers whose chief executive compensation is outside our coverage universe are stated as such, never left blank.

10d

Frequently asked questions

Who was the highest-paid executive at Amprius Technologies in fiscal 2025?
As disclosed, Thomas Stepien (President, Chief Executive Officer) was the highest-paid executive at Amprius Technologies in fiscal 2025, with total compensation of $3,354,715.
How much does Amprius Technologies spend in total on board compensation for fiscal 2025?
As disclosed, Amprius Technologies reported total board compensation of $1,117,909 for fiscal 2025.

Answers are drawn only from the figures disclosed in this brief and cited to their location in the source filing. Where a figure required for an answer is not disclosed, that is stated rather than estimated.

11

Source register

Each figure's location is given both for the eye (section · page · table · row · column) and for a script (table/row/column index and exact character span in the filed document). Any figure can be independently confirmed against the source.

#SupportsDocumentFiledAccessionLocation in document
1Section 01, Thomas StepienDEF 14A2026-04-290001899287-26-000026Section “Summary Compensation Table for Fiscal 2025” · page 25. As printed: 3,354,715. Filing ↗machine: r2 · c45 · span 309212–309221
2Section 01, Ricardo RodriguezDEF 14A2026-04-290001899287-26-000026Section “Summary Compensation Table for Fiscal 2025” · page 25. As printed: 2,982,094. Filing ↗machine: r4 · c45 · span 315425–315434
3Section 01, Kang SunDEF 14A2026-04-290001899287-26-000026Section “Summary Compensation Table for Fiscal 2025” · page 25. As printed: 2,632,755. Filing ↗machine: r6 · c45 · span 321586–321595
4Section 03, Kang Sun RSUDEF 14A2026-04-290001899287-26-000026Section “Executive Compensation” · grants of plan-based awards table. Filing ↗machine: span 320361–320370
5Section 03, Ricardo Rodriguez RSUDEF 14A2026-04-290001899287-26-000026Section “Executive Compensation” · grants of plan-based awards table. Filing ↗machine: span 314197–314206
6Section 03, Thomas Stepien RSUDEF 14A2026-04-290001899287-26-000026Section “Executive Compensation” · grants of plan-based awards table. Filing ↗machine: span 307802–307811
7Section 07, pay ratioDEF 14A2026-04-290001899287-26-000026Section “CEO Pay Ratio”. As printed: —. Filing ↗
8Section 08, Donald R. DixonDEF 14A2026-04-290001899287-26-000026Section “Director Compensation”. As printed: 274,998. Filing ↗machine: span 243637–244123
9Section 08, Dr. Wen HsiehDEF 14A2026-04-290001899287-26-000026Section “Director Compensation”. As printed: 234,998. Filing ↗machine: span 245337–245771
10Section 08, Kathleen BaylessDEF 14A2026-04-290001899287-26-000026Section “Director Compensation”. As printed: 229,998. Filing ↗machine: span 248580–249014
11Section 08, Dr. Steven ChuDEF 14A2026-04-290001899287-26-000026Section “Director Compensation”. As printed: 223,748. Filing ↗machine: span 246960–247394
12Section 08, Livingston SatterthwaiteDEF 14A2026-04-290001899287-26-000026Section “Director Compensation”. As printed: 154,167. Filing ↗machine: span 250207–250641
13Section 08, Thomas M. StepienDEF 14A2026-04-290001899287-26-000026Section “Director Compensation”. As printed: 0. Filing ↗
14Section 08, Kang SunDEF 14A2026-04-290001899287-26-000026Section “Director Compensation”. As printed: 0. Filing ↗
15Section 06, 2022 voteForm 8-K2022-09-140001193125-22-243891Item 5.07 · say-on-pay result. As reported: —. Filing ↗
16Section 01 trend, Δ column (computed)Computed——Δ = current-FY total − prior-FY total per named officer.machine: formula: Δ = FY(n) − FY(n−1)
17Section 03b vehicle mix (computed)Computed——RSU / PSU / Options grant-date fair values summed per officer from the grants table; % performance-vested = PSU ÷ (RSU+PSU+Options).machine: formula: sums + PSU ratio
18Section 09b board cost (computed)Computed——Cash 338,750 + equity 779,159 + all other 0 = 1,117,909, summed across the director compensation table rows.machine: formula: Σ = 1,117,909
19Amprius Technologies (subject), Section 10b CEO totalDEF 14A2026-04-290001899287-26-000026CEO total compensation as printed in Amprius Technologies's own proxy. As printed: 3,354,715. Filing ↗machine: r2 · c45 · span 309212–309221

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