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Mark Groussman

CEOC-LevelReporting Officer
Current role
Chief Executive Officer · Marathon Digital
Former Chief Executive Officer · Marathon Digital
Current holdings (from latest Form 3/4/5)
Marathon Digital MARA: 2,965,631 shares ≈ $34.52M (0.78% of co.) (as of 2012-11-13)
Insider activity since 2012-08
Invested $150.0K (4,302,970 shares acquired)
↳ notional today: $50.09M
Divested $275.0K (1,375,000 shares sold)
↳ notional today: $16.00M
→ Net divested $125.0K
↳ net notional: ↑ $34.08M
Change since first tracked filing (not total holdings; see methodology). Prices as of 2026-09-17.

Roles

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

CompanyRoleTenureFilings
Marathon DigitalChief Executive Officer2012-06 → present (14y 3mo)1
Marathon DigitalFormer Chief Executive Officer2012-08 → present (14y 1mo)1

Insider transactions

Totals for this person

BucketInvested (shares)Invested (USD)Divested (shares)Divested (USD)Net directionTxnsInvested @ last priceDivested @ last price
All time4,302,970$150.0K1,375,000$275.0K↓ Divested $125.0K8$50.09M$16.00M
20124,302,970$150.0K1,375,000$275.0K↓ Divested $125.0K8$50.09M$16.00M
2012-Q31,802,970$0-$0Flat2$20.99M$0
2012-Q42,500,000$150.0K1,375,000$275.0K↓ Divested $125.0K6$29.10M$16.00M

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
2012-11-14Marathon DigitalOther acquisition / disposition · Options1,500,000-$17.46M
2012-11-13Marathon DigitalOpen-market purchase1,000,000$150,000$11.64M
2012-11-09Marathon DigitalOpen-market sale250,000$50,000$2.91M
2012-11-08Marathon DigitalOpen-market sale275,000$55,000$3.20M
2012-11-06Marathon DigitalOpen-market sale750,000$150,000$8.73M
2012-11-06Marathon DigitalOpen-market sale100,000$20,000$1.16M
2012-09-14Marathon DigitalIn/at-money option exercise302,970-$3.53M
2012-08-03Marathon DigitalOther acquisition / disposition · Options1,500,000-$17.46M