Follow-The-Filings

Security · featured owners

AMPX Amprius Technologies Inc.

Industrials COMMON STOCK Equity as of 2026 Q2 among managers we track

  • 2 Owners
  • Max 1.0%
  • $18M
  • 1 new 1 add

AMPX (Amprius Technologies Inc.) is held in 2 featured 13F books as of 2026 Q2. Spencer Waxman - Shannon River Fund Management is the largest tracked holder by portfolio weight (1.0%). Figures are as-filed 13F, not free float.

Who owns this now

Largest portfolio weights among featured holders · max 1.0% (Spencer Waxman - Shannon River Fund Management) · not free-float ownership

  1. Spencer Waxman new 1.0%
  2. Polen Capital Management add 0.06%

holders

sorted by value · long equity only · current book 2026 Q2 · open a manager for their book

history
Spencer Waxman - Shannon River Fund Management 2026 Q2 1.0% New 1.0% 838,887 $12M history
Polen Capital Management 2026 Q2 0.06% Add +10.3% 465,598 $6M history

2 current · options excluded

SEC filings

Recent issuer filings from EDGAR · 12 shown · open Filing / Doc on SEC.gov

Filed Form Detail Links
8-K 1.01,2.03,9.01 Filing Doc
10-Q Filing Doc
8-K 2.02,9.01 Filing Doc
8-K 5.07 Filing Doc
8-K/A 3.02 Filing Doc
10-Q Filing Doc
8-K 1.01,3.02,9.01 Filing Doc
8-K 2.02,9.01 Filing Doc
DEFA14A Filing Doc
8-K 4.01 Filing Doc
10-K Filing Doc
8-K 2.02,9.01 Filing Doc

Insider forms

Form 3 / 4 / 5 from EDGAR · 15 rows shown

Filed Form Detail Links
4 Period Aug 21, 2026 · 3 forms Filing Doc
4 Period Jun 12, 2026 · 4 forms Filing Doc
4 Period Jun 9, 2026 Filing Doc
4 Period Jun 4, 2026 Filing Doc
4 Period May 26, 2026 Filing Doc
4 Period May 27, 2026 · 3 forms Filing Doc
4 Period May 21, 2026 · 3 forms Filing Doc
4 Period May 5, 2026 Filing Doc
4/A Period Dec 19, 2025 Filing Doc
4 Period Apr 1, 2026 Filing Doc
4 Period Mar 23, 2026 Filing Doc
4 Period Mar 12, 2026 Filing Doc
4/A Period Mar 4, 2026 Filing Doc
4 Period Mar 10, 2026 Filing Doc
4 Period Mar 4, 2026 · 2 forms Filing Doc

Updated 5 days ago Source: SEC EDGAR submissions All on EDGAR

financials

US-GAAP annual · as tagged in Form 10-K · fiscal years · values link to the SEC filing

Income statement

Metric FY2023 FY2024 FY2025
Revenue — $23.57M $71.91M
Gross profit -$14.68M -$18.33M $8.26M
Gross margin * — -77.8% 11.5%
Net income -$36.78M -$44.67M -$44.02M
Net margin * — -189.5% -61.2%

Balance sheet

Metric FY2023 FY2024 FY2025
Total current assets $50.52M $68.76M $126.44M
Total non-current assets * $57.21M $52.36M $30.45M
Total assets $107.74M $121.12M $156.89M
Total current liabilities $13.46M $17.21M $17.87M
Total non-current liabilities * $34.48M $34.44M $35.21M
Total equity $59.8M $69.47M $103.82M

Cash flow

Metric FY2023 FY2024 FY2025
Cash from operations -$25.55M -$33.35M -$31.13M
Cash from investing -$17.55M -$3.21M -$4.4M
Cash from financing $19.17M $47.15M $71.04M
Net change in cash * -$23.94M $10.59M $35.51M

Source: SEC companyfacts (US-GAAP 10-K) · * = computed (not a single XBRL tag) · fiscal year as labeled by the issuer · not adjusted or audited by Follow-The-Filings

ownership over time

filing count by report period · click a bar for that quarter’s holders