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Billy Krassakopoulos

Actively Reporting
Current role
President · WhiteFiber
Current holdings (from latest Form 3/4/5)
WhiteFiber WYFI: 27,760 shares ≈ $495.8K (0.07% of co.) (as of 2026-04-28)
Insider activity since 2025-08
Invested $150.0K (43,378 shares acquired)
↳ notional today: $774.7K
Divested $0 (8,490 shares sold)
↳ notional today: $151.6K
→ Net invested $150.0K
↳ net notional: ↑ $623.1K
Change since first tracked filing (not total holdings; see methodology). Prices as of 2026-09-17.

Krassakopoulos has served as President of WhiteFiber since February 2025 and has served as Chief Executive Officer of Enovum since its formation on July 13, 2023, positions he continues to hold.

He brings more than 20 years of experience in the data center and managed hosting industry. He founded Netintelligent Hosting Services in 2002; the company was acquired by Estruxture Data Centers in 2016, following which he served as Vice President at Estruxture Data Centers.

Biography extracted from WhiteFiber 10-K filed 2026-03-26 View cached copy (2026-08-31)Live source ↗

Roles

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

CompanyRoleTenureFilings
WhiteFiberPresident2025-08 → present (1y 1mo)5
Show 5 underlying filings
2026-04-28 · WhiteFiber Form 4 filed 2026-04-29
View cached copy (2026-09-13)Live source ↗
2026-01-13 · WhiteFiber Form 4 filed 2026-03-17
View cached copy (2026-09-13)Live source ↗
2025-11-17 · WhiteFiber Form 4 filed 2025-11-19
View cached copy (2026-09-13)Live source ↗
2025-08-08 · WhiteFiber Form 4 filed 2025-08-08
View cached copy (2026-09-13)Live source ↗
2025-08-06 · WhiteFiber Form 3 filed 2025-08-06
View cached copy (2026-09-13)Live source ↗

Insider transactions

Totals for this person

BucketInvested (shares)Invested (USD)Divested (shares)Divested (USD)Net directionTxnsInvested @ last priceDivested @ last price
All time43,378$150.0K8,490$0↑ Invested $150.0K7$774.7K$151.6K
202631,902$08,490$0Flat5$569.8K$151.6K
202511,476$150.0K-$0↑ Invested $150.0K2$205.0K$0
2025-Q38,823$150.0K-$0↑ Invested $150.0K1$157.6K$0
2025-Q42,653$0-$0Flat1$47.4K$0
2026-Q131,902$0-$0Flat4$569.8K$0
2026-Q2-$08,490$0Flat1$0$151.6K

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 2026-09-17); they are a valuation, not a cash flow, and they move every day the market does.

All transactions

DateCompanyKindSharesAmount (USD)Value @ last price
2026-04-28WhiteFiberTax withholding on vesting · Ordinary Shares, $.01 par value8,490-$151.6K
2026-03-16WhiteFiberOption / RSU exercise · Ordinary Shares, $.01 par value15,624-$279.0K
2026-03-16WhiteFiberGrant / award / vesting · Restricted Stock Units15,624-$279.0K
2026-01-13WhiteFiberOption / RSU exercise · Ordinary Shares, $.01 par value327-$5.8K
2026-01-13WhiteFiberGrant / award / vesting · Restricted Stock Units327-$5.8K
2025-11-17WhiteFiberOption / RSU exercise · Ordinary Shares, $.01 par value2,653-$47.4K
2025-08-08WhiteFiberGrant / award / vesting · Ordinary Shares8,823$149,991$157.6K