S21 Pro fleet upgrade delivery in November
Company: TeraWulf
What the later record shows
Delivered; the record does not say when
The S21 Pro count rose from 5,000 at September 30, 2024 to 12,900 at December 31, 2024, an increase of about 7,900 units. This is consistent with the ~7.4k upgrade, but no passage says the miners arrived in November.
“Bitmain S21 5,100 Bitmain S21 Pro 5,000 58,400 As of September 30, 2024, our fleet of miners ranged in age”
2024-11-11 · TeraWulf 10-Q filed 2024-11-12 View cached copy (2026-08-31)Live source ↗
“Bitmain S21 8,300 Bitmain S21 Pro 12,900 62,000 As of December 31, 2024, our fleet of miners ranged in age”
2025-03-02 · TeraWulf 10-K filed 2025-03-03 View cached copy (2026-08-31)Live source ↗
Checked October 9, 2026 against filings, releases and reporting published after the claim was made. Quotes are verbatim from the linked documents.
The claim, verbatim
Fleet will be upgraded with new S21 Pro miners (7.4k) for delivery and installation in November 2024 (Q4 2024).
Source (primary)
Nautilus Sale Announcement (IR page (investors.terawulf.com), ir_presentation)
View cached copy (2026-10-06)Live source ↗
Quote: “Fleet will be upgraded with new S21 Pro miners for delivery and installation in November”
How we checked this
Checked on October 14, 2026. The cited source supports every part of this claim.
The deck says the new S21 Pro miners will be delivered and installed in November. The fleet table and footnotes identify a 7.4k-unit order for Q4 2024 installation, separate from the 14.4k units for Q1 2025.
Confirmed in the source:
- TeraWulf's fleet will be upgraded with new S21 Pro miners for delivery and installation in November
- The near-term S21 Pro order is 7.4k units, separate from the 14.4k units planned for Q1 2025
- These S21 Pro miner orders are to be installed in Q4 2024
What we did: Read our cached copy of IR page (investors.terawulf.com) (https://d1io3yog0oux5.cloudfront.net/_26c9692236622f11a71632d61560402c/terawulf/db/2396/23300/pdf/WULF_Nautilus_Sale_Announcement_Deck_%2810-03-24%29vF.pdf) in full (14,394 characters, retrieved October 6, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms Nautilus Sale Announcement
Quote: “Fleet will be upgraded with new S21 Pro miners for delivery and installation in November”
confirms TeraWulf 10-Q filed 2024-11-12
Quote: “Bitmain S21 5,100 Bitmain S21 Pro 5,000 58,400 As of September 30, 2024, our fleet of miners ranged in age”
confirms TeraWulf 10-K filed 2025-03-03
Quote: “Bitmain S21 8,300 Bitmain S21 Pro 12,900 62,000 As of December 31, 2024, our fleet of miners ranged in age”
confirms Nautilus Sale Announcement
Quote: “Fleet will be upgraded with new S21 Pro miners for delivery and installation in November”