Additional S21 Pro miners delivery Q1 2025
Company: TeraWulf
What the later record shows
Delivered on time · happened March 31, 2025
S21 Pro count rose from 12,900 at December 31, 2024 to 26,800 at March 31, 2025. That is roughly 13,900 added in Q1 2025, close to the 14.4k planned.
“Bitmain S21 8,300 Bitmain S21 Pro 12,900 62,000 As of December 31, 2024, our fleet of miners ranged”
2025-03-02 · TeraWulf 10-K filed 2025-03-03 View cached copy (2026-08-31)Live source ↗
“Bitmain S21 8,100 Bitmain S21 Pro 26,800 73,200 As of March 31, 2025, our fleet of miners ranged in age”
2025-05-08 · TeraWulf 10-Q filed 2025-05-09 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
WULF plans to receive an additional 14,400 S21 Pro miners in Q1 2025 to fully utilize MB-5 at Lake Mariner
Source (primary)
Nautilus Sale Announcement (IR page (investors.terawulf.com), ir_presentation)
View cached copy (2026-09-01)Live source ↗Archive.org ↗
Quote: “In Q1 2025, WULF plans to receive an additional 14.4k S21 Pros to fully utilize MB-5 at Lake Mariner”
How we checked this
Checked on October 10, 2026. The cited source supports every part of this claim.
The deck states that WULF plans to receive an additional 14.4k S21 Pros in Q1 2025 to fully utilize MB-5 at Lake Mariner.
Confirmed in the source:
- WULF plans to receive an additional 14,400 S21 Pro miners in Q1 2025
- The purpose is to fully utilize MB-5 at Lake Mariner
What we did: Read our cached copy of IR page (investors.terawulf.com) (https://d1io3yog0oux5.cloudfront.net/_0c87b48cb4d1c6967968c7d0c3e5933d/terawulf/db/2396/23300/pdf/WULF_Nautilus_Sale_Announcement_Deck_%2810-03-24%29vF.pdf) in full (14,394 characters, retrieved September 1, 2026) and checked each assertion in the claim against it.
Additional evidence
confirms Nautilus Sale Announcement
Quote: “In Q1 2025, WULF plans to receive an additional 14.4k S21 Pros to fully utilize MB-5 at Lake Mariner”
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”
confirms TeraWulf 10-Q filed 2025-05-09
Quote: “Bitmain S21 8,100 Bitmain S21 Pro 26,800 73,200 As of March 31, 2025, our fleet of miners ranged in age”