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ESS Tech, Inc.Latest close $0.860 of 27 marquee funds currently hold2 CUSIPs mapped
Current holders
0
27 funds tracked
Ever held
4
Current + past
New this quarter
0
Exited this quarter
1
Marquee-fund ownership over time
Aug 9, 2024Nov 14, 2024Feb 12, 2026May 15, 2026
Now
0
This quarter's activity
New positions opened
None.
Positions exited
Past holders
Funds that exited at some point| Fund | Last entry | Exited | Entry → Exit | Return |
|---|---|---|---|---|
| Millennium Management 3× in & out | Q1 2026 | Q2 2026 | → $0.91 | -36% |
| Citadel Advisors 2× in & out | Q4 2025 | Q1 2026 | → $1.42 | -49% |
| Renaissance Technologies 2× in & out | Q4 2024 | Q1 2026 | → $1.42 | -84% |
| AQR Capital Management | Q3 2024 | Q4 2024 | — | +0% |
Insider activity
Form 4 — officers, directors, 10%+ ownersFiled within two business days of each transaction by anyone with material insider status at ESS Tech, Inc.. Pair with the holders table above as a sanity check: heavy insider buying alongside marquee-fund accumulation is the strongest accumulation signal; heavy insider selling alongside fund exits is the strongest distribution signal.
Filings · last 30d
8
Filings · last 90d
8
Total on file
125
Recent SEC buffer
Most recent
Jun 8, 2026
30d / 90d windows measured from Jun 8, 2026 — the most recent Form 4 on file — not from today.
- Form 40002106707-26-000006Jun 8, 2026
- Form 40001705428-26-000002Jun 2, 2026
- Form 40001685105-26-000002Jun 2, 2026
- Form 40001544911-26-000002Jun 2, 2026
- Form 40001885330-26-000002Jun 2, 2026
- Form 40001549086-26-000002Jun 2, 2026
- Form 40002083724-26-000004May 26, 2026
- Form 40002056453-26-000004May 26, 2026
- Form 40002083724-26-000003Feb 26, 2026
- Form 40002056453-26-000003Feb 26, 2026
- Form 40002083724-26-000002Feb 26, 2026
- Form 40002056453-26-000002Feb 26, 2026
- Form 40002106707-26-000004Jan 29, 2026
- Form 40002083724-25-000002Nov 21, 2025
- Form 40002056453-25-000005Nov 21, 2025
Showing 15 of 125 recent Form 4 filings. Browse all on EDGAR ↗
Fundamentals
XBRL · ESS Tech, Inc.Annual figures sourced directly from ESS Tech, Inc.'s 10-K / 10-Q filings via SEC EDGAR XBRL. Latest fiscal year and the year-over-year change, with up to ten years of history.
Revenue
$1.58M
FY2025-75% YoY
Net income
-$63.44M
FY2025+26% YoY
EPS (diluted)
$-4.34
FY2025+41% YoY
Free cash flow(?)
-$53.67M
FY2025+33% YoY
Recent SEC filings
10-K · 10-Q · 8-K · 13D/G · proxyThe most recent material filings for ESS Tech, Inc. — earnings, material events, ownership disclosures, proxy statements. Form 4 insider activity is shown in the panel above.
- 8-KMaterial eventMay 29, 2026
- 10-QQuarterly reportMay 7, 2026
- 8-KMaterial eventMay 7, 2026
- DEF 14AProxy statementApr 15, 2026
- 8-KMaterial eventApr 15, 2026
- 10-KAnnual reportMar 5, 2026
- 8-KMaterial eventMar 5, 2026
- 8-KMaterial eventJan 30, 2026
- 8-KMaterial eventJan 29, 2026
- 8-KMaterial eventJan 6, 2026
- 8-KMaterial eventDec 5, 2025
- 8-KMaterial eventNov 13, 2025
- S-3Registration (shelf)Nov 13, 2025
- 8-KMaterial eventNov 13, 2025
- 10-QQuarterly reportNov 13, 2025
Trade history
Every open→close lifecycle across tracked funds| Fund | Open date | Close date | Open price | Close price / current | Return |
|---|---|---|---|---|---|
| Millennium Management | Q1 2026 | Q2 2026 | $1.42 | $0.91 | -36% |
| Citadel Advisors | Q4 2025 | Q1 2026 | $2.76 | $1.42 | -49% |
| Millennium Management | Q4 2024 | Q3 2025 | $7.33 | $1.71 | -77% |
| Renaissance Technologies | Q4 2024 | Q1 2026 | $8.90 | $1.42 | -84% |
| Citadel Advisors | Q3 2024 | Q4 2024 | $0.00 | — | +0% |
| AQR Capital Management | Q3 2024 | Q4 2024 | $0.00 | — | +0% |
| Millennium Management | Q3 2024 | Q4 2024 | $0.00 | — | +0% |
| Renaissance Technologies | Q3 2024 | Q4 2024 | $0.00 | — | +0% |
Caveats
- Covers only the 27 marquee funds tracked here, not the full institutional universe. A “0 holders” reading does not mean unowned.
- Heavy funds (Renaissance Technologies, Citadel Advisors, Soros Fund Management, Two Sigma Investments, D.E. Shaw, AQR Capital Management, Millennium Management, Point72 Asset Management) use 8-quarter snapshots, so their pre-2024 history is missing.
- “Current” reflects each fund's most recent 13F — filings lag the actual trade by up to 45 days; positions shown may have changed since.
- Cost = price at the entry filing date. Re-entered positions show the most recent open lot.
- Options, ADRs, and unmapped CUSIPs are excluded from the follower-backtest pipeline that produces these snapshots, so certain holding types won't appear here.