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William Joseph Tanimoto

William Joseph Tanimoto

C-LevelFounding InsiderReporting OfficerActively Reporting
Current role
Chief Accounting Officer · TeraWulf
Reported pay · FY2025
TeraWulf · $1.05M (salary $245.8K)
Current holdings (from latest Form 3/4/5)
TeraWulf WULF: 55,564 shares ≈ $917.4K (0.01% of co.) (as of 2026-08-16)
Insider activity since 2025-06
Invested $0 (159,419 shares acquired)
↳ notional today: $2.63M
Divested $0 (7,020 shares sold)
↳ notional today: $115.9K
→ Net flat $0
↳ net notional: ↑ $2.52M
Change since first tracked filing (not total holdings; see methodology). Prices as of 2026-09-04.

William Tanimoto, 35, has served as Chief Accounting Officer of TeraWulf Inc. since June 2025, where he manages the Company's financial functions, including accounting, audit and internal controls. He holds a B.S. in Accounting from California State University, Sacramento.

Mr. Tanimoto brings more than 14 years of experience in public company audit matters. Prior to joining TeraWulf, he spent over 10 years at Deloitte LLP, most recently as Audit Senior Manager.

Biography extracted from TeraWulf DEF 14A filed 2026-04-28 View cached copy (2026-08-31)Live source ↗

Photo: www.terawulf.com (TeraWulf official site) · retrieved 2026-08-31 · cached copy · match confidence high

Roles

Contiguous filings for the same role are collapsed into a single tenure span. Click a row to see the underlying filings.

CompanyRoleTenureFilings
TeraWulfChief Accounting Officer2025-06 → present (1y 3mo)9
Show 9 underlying filings
2026-08-16 · TeraWulf Form 4 filed 2026-08-17
View cached copy (2026-08-30)Live source ↗
2026-06-24 · TeraWulf Form 4 filed 2026-06-25
View cached copy (2026-08-30)Live source ↗
2026-01-14 · TeraWulf Form 4 filed 2026-01-16
View cached copy (2026-08-30)Live source ↗
2026-01-09 · TeraWulf Form 4 filed 2026-01-09
View cached copy (2026-08-30)Live source ↗
2026-01-02 · TeraWulf Form 4 filed 2026-01-05
View cached copy (2026-08-30)Live source ↗
2025-10-16 · TeraWulf Form 4 filed 2025-10-20
View cached copy (2026-08-30)Live source ↗
2025-08-16 · TeraWulf Form 4 filed 2025-08-18
View cached copy (2026-08-30)Live source ↗
2025-06-24 · TeraWulf Form 4 filed 2025-06-26
View cached copy (2026-08-30)Live source ↗
2025-06-20 · TeraWulf Form 3/A filed 2025-08-18
View cached copy (2026-08-30)Live source ↗

Compensation

YearRole as filedSalaryBonusStock awardsOtherTotalSource
2025Chief Accounting Officer$245.8K$180.0K$612.9K$12.4K$1.05MView cached copy (2026-08-31)Live source ↗

As reported in the company's DEF 14A Summary Compensation Table (SEC Reg S-K Item 402(c)). Stock and option awards are grant-date fair values — what the award was worth on the day it was granted, not cash received and not what it is worth now. Every row here reconciles: its columns add up to the total the filing printed.

Insider transactions

Totals for this person

BucketInvested (shares)Invested (USD)Divested (shares)Divested (USD)Net directionTxnsInvested @ last priceDivested @ last price
All time159,419$07,020$0Flat15$2.63M$115.9K
202686,085$07,020$0Flat11$1.42M$115.9K
202573,334$0-$0Flat4$1.21M$0
2025-Q430,000$0-$0Flat1$495.3K$0
2026-Q152,753$07,020$0Flat7$871.0K$115.9K
2026-Q220,000$0-$0Flat2$330.2K$0
2026-Q313,332$0-$0Flat2$220.1K$0

Invested = shares acquired (buys, grants, option exercises) — insider adding to the position. Divested = shares reduced (sells, dispositions, tax-withholding) — cash flowing TO the insider. Net direction shows which side wins on dollar terms in each bucket. % of holder's stake not yet computed (pending Form 3/4 holdings ingest). See methodology. The two @ last price columns restate the same share counts at the most recent share price we read (close of 2026-09-04); they are a valuation, not a cash flow, and they move every day the market does.

All transactions

DateCompanyKindSharesAmount (USD)Value @ last price
2026-08-16TeraWulfOption / RSU exercise · Common stock, $0.001 par value per share6,666-$110.1K
2026-08-16TeraWulfOption / RSU exercise · Restricted Stock Units6,666-$110.1K
2026-06-24TeraWulfOption / RSU exercise · Common stock, $0.001 par value per share10,000-$165.1K
2026-06-24TeraWulfOption / RSU exercise · Restricted Stock Units10,000-$165.1K
2026-01-14TeraWulfGrant / award / vesting · Restricted Stock Units9,419-$155.5K
2026-01-09TeraWulfOption / RSU exercise · Common stock, $0.001 par value per share16,667-$275.2K
2026-01-09TeraWulfSale to issuer (buyback) · Common stock, $0.001 par value per share5,296-$87.4K
2026-01-09TeraWulfOption / RSU exercise · Restricted Stock Units16,667-$275.2K
2026-01-02TeraWulfOption / RSU exercise · Common stock, $0.001 par value per share5,000-$82.6K
2026-01-02TeraWulfSale to issuer (buyback) · Common stock, $0.001 par value per share1,724-$28.5K
2026-01-02TeraWulfOption / RSU exercise · Restricted Stock Units5,000-$82.6K
2025-10-16TeraWulfGrant / award / vesting · Restricted Stock Units30,000-$495.3K
2025-08-16TeraWulfOption / RSU exercise · Common stock, $0.001 par value per share6,667-$110.1K
2025-08-16TeraWulfOption / RSU exercise · Restricted Stock Units6,667-$110.1K
2025-06-24TeraWulfGrant / award / vesting · Restricted Stock Units30,000-$495.3K