Last raise Aug 21, 2026, 424B5: 6.4M shares (19.4% of the 33.0M then) at $1.02, $3.2M gross
Known so far: 8.1M possible new shares (24.6% of today's 33.0M) · shelf room about $4.5M · not yet read: warrants, converts, options, ATM.
Shelf room
Room todayabout $4.5M
One third of float$4.5M ($13.6M float, Jun 30, 2025)
Sold off it, 12 monthsnothing
How this is worked out
Shelf room about $4.5M on the S-3 of Sep 8, 2026: the baby-shelf rule (public float under $75M) caps sales at one third of the $13.6M public float stated as of Jun 30, 2025, $4.5M, nothing sold off it in the last 12 months. Sources: S-3 Sep 8, 2026, effective Sep 16, 2026 · public float, as of Jun 30, 2025.
14.3M registered for resale, already counted in today's shares where issued; 1.2M of them likely already outstanding.
Already in the Aug 6, 2026 share count: the shares sold in the 424B5 of Jan 30, 2026 (EDGAR).
What could become new ESS Tech (GWHT) shares, from the S-3 and 424B prospectus covers we have read. Shares registered for resale are kept out of the total: where already issued, they are in today's share count.
Read so far: the cover share count (33M shares, +132% from 14.2M on Aug 11, 2025) and the prospectus covers below. Not read yet: warrants, convertible notes, options and RSUs and an ATM program.Read them on EDGAR: the latest 10-Q · S-3 shelf filings.
Registrations and share actions on EDGAR (59 filings)
Registration statements, prospectuses, effectiveness notices, information statements and share sales, newest first. Showing the newest 15 of 59. Each links to the filing on EDGAR.
424B3Prospectus for shares being soldUp to 13.1M shares (39.8% of the 33.0M then) for resale by existing holders
S-3Shelf registration for resale by existing holders
8-K + 424B5Financing: agreement and unregistered share sale (8-K) with a 424B5 prospectus filed the same day6.4M shares (19.4% of the 33.0M then) at $1.02, $3.2M gross
8-K + 424B5Financing: agreement (8-K) with a 424B5 prospectus filed the same dayUp to at $1.02, $75.0M gross
S-8Registration of shares for employee stock plans
8-K + 424B5Financing: agreement (8-K) with a 424B5 prospectus filed the same day3.5M shares (17.7% of the 19.6M then) at $1.75, $15.0M gross
424B3Prospectus for shares being soldUp to 1.2M shares (6.0% of the 19.6M then) for resale by existing holders
424B5Prospectus for shares being soldUp to at $2.31, $75.0M gross
S-3Shelf registration for resale by existing holders
8-K + 424B5Financing: agreement (8-K) with a 424B5 prospectus filed the same dayUp to at $4.40, $75.0M gross
424B2Prospectus for shares being sold620K shares (4.4% of the 14.2M then) at $4.95, $3.1M gross
424B2Prospectus for shares being sold445K shares (3.1% of the 14.2M then) at $6.25, $2.8M gross
424B2Prospectus for shares being sold1.7M shares (12.1% of the 14.2M then) at $7.50, $12.9M gross
Show all 59
8-K + 424B2Financing: agreement and unregistered share sale (8-K) with a 424B2 prospectus filed the same dayUp to $25.0M of shares at the market
424B2Prospectus for shares being sold300K shares (2.1% of the 14.2M then) at $3.04, $912K gross
424B2Prospectus for shares being sold500K shares (3.5% of the 14.2M then) at $1.70, $850K gross
424B2Prospectus for shares being sold630K shares (4.4% of the 14.2M then) at $1.49, $939K gross
424B2Prospectus for shares being sold250K shares (1.8% of the 14.2M then) at $1.52, $380K gross
424B2Prospectus for shares being sold200K shares (1.4% of the 14.2M then) at $1.61, $322K gross
424B2Prospectus for shares being sold200K shares (1.4% of the 14.2M then) at $1.48, $296K gross
424B2Prospectus for shares being sold97.3K shares (0.7% of the 14.2M then) at $1.36, $132K gross
424B2Prospectus for shares being sold13.1K shares (0.1% of the 14.2M then) at $1.36, $17.8K gross
424B2Prospectus for shares being sold35.0K shares (0.2% of the 14.2M then) at $1.55, $54.2K gross
424B2Prospectus for shares being sold110K shares (0.8% of the 14.2M then) at $1.56, $172K gross
424B2Prospectus for shares being sold125K shares (0.9% of the 14.2M then) at $1.55, $194K gross
424B2Prospectus for shares being sold500K shares (4.1% of the 12.1M then) at $1.97, $985K gross
424B2Prospectus for shares being sold500K shares (4.1% of the 12.1M then) at $1.55, $775K gross
424B2Prospectus for shares being sold215K shares (1.8% of the 12.1M then) at $1.27, $273K gross
8-K + 424B2Financing: agreement and unregistered share sale (8-K) with a 424B2 prospectus filed the same daySize not stated on the cover
424B3Prospectus for shares being soldUp to at $2.80, $13.5M gross
8-K + 424B5Financing: agreement (8-K) with a 424B5 prospectus filed the same dayUp to at $3.35, $13.5M gross
S-8Registration of shares for employee stock plans
S-8Registration of shares for employee stock plans
424B3Prospectus for shares being soldUp to 34.2M shares (19.8% of the 173M then) for resale by existing holders; before the 1-for-15 reverse split by Nov 8, 2024
424B3Prospectus for shares being sold130M shares (84.9% of the 153M then) for resale by existing holders; before the 1-for-15 reverse split by Nov 8, 20245 supplements, latest Nov 17, 2022
S-3Shelf registration: room to sell new shares later
424B8Prospectus for shares being sold130M shares (85.2% of the 153M then) for resale by existing holders; before the 1-for-15 reverse split by Nov 8, 2024
S-1Registration statement for resale by existing holders
S-8Registration of shares for employee stock plans
S-1Registration statement; new shares or resale not read yet
424B3Prospectus for shares being sold126M shares (87.1% of the 145M then) for resale by existing holders; before the 1-for-15 reverse split by Nov 8, 20246 supplements, latest Dec 20, 2021
S-8Registration of shares for employee stock plans