Form4insider filings, from the source

Company · CIK 0001568651 · SIC 6324 — Hospital & Medical Service Plans · NYSE

Oscar Health, Inc. · OSCR

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $131.1M · 17net −$131.1M
$10k$10k$1M$1M$100M$100MbuyssalesSep 2024Jan 2025May 2025Sep 2025Jan 2026May 2026Sep 2026

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 18, 2026 SForm 4 →Sep 22, 4:20 pm EDTVanessa Ames WittmanDirector25,000$32.24$806,000112,121−18.2%10b5-1
Sep 18, 2026 JForm 4 →Sep 18, 8:27 pm EDTJoshua KushnerCo-Founder and Vice Chairman, Director, 10% Owner19,030,851——0—
Sep 18, 2026 JForm 4 →Sep 18, 8:21 pm EDTThrive Partners II GP, LLC +8Director, 10% Owner19,030,851——0—
Sep 3, 2026 SForm 4 →Sep 8, 4:22 pm EDTJanet LiangPresident, Oscar Insurance10,360$31.45$325,822248,697−4.00%10b5-1
Sep 3, 2026 SForm 4 →Sep 8, 4:16 pm EDTVictoria BaltrusChief Accounting Officer958$31.45$30,129213,631−0.45%10b5-1
Sep 3, 2026 SForm 4 →Sep 8, 4:16 pm EDTRichard Scott BlackleyChief Financial Officer28,869$31.45$907,9301,046,108−2.69%10b5-1
Sep 3, 2026 SForm 4 →Sep 8, 4:16 pm EDTAdam McAnaneyChief Legal Officer9,092$31.45$285,943209,004−4.17%10b5-1
Sep 3, 2026 SForm 4 →Sep 8, 4:16 pm EDTMario SchlosserDirector31,422$31.45$988,222449,444−6.53%10b5-1
Aug 27, 2026 SForm 4 →Aug 31, 4:16 pm EDTMario SchlosserDirector750,000$30.43$22,822,500480,866−60.9%
Aug 27, 2026 CForm 4 →Aug 31, 4:16 pm EDTMario SchlosserDirector750,000——630,866—
Aug 18, 2026 SForm 4 →Aug 20, 4:16 pm EDTRichard Scott BlackleyChief Financial Officer18,750$31.74$595,12556,250−25.0%
Jul 1, 2026 SForm 4 →Jul 6, 4:11 pm EDTMario SchlosserDirector47,500$31.24$1,484,0140−100%10b5-1
Jul 1, 2026 CForm 4 →Jul 6, 4:11 pm EDTMario SchlosserDirector47,500——47,500—10b5-1
Jun 29, 2026 SForm 4 →Jul 1, 4:16 pm EDTMark T BertoliniChief Executive Officer, Director1,238,996$28.87$35,767,3227,751,570−13.8%10b5-1
Jun 25, 2026 SForm 4 →Jun 29, 4:17 pm EDTMark T BertoliniChief Executive Officer, Director1,206,310$28.94$34,912,0788,990,566−11.8%10b5-1
Jun 23, 2026 SForm 4 →Jun 25, 4:17 pm EDTMario SchlosserDirector1,027,500$29.38$30,183,4130−100%10b5-1
Jun 23, 2026 CForm 4 →Jun 25, 4:17 pm EDTMario SchlosserDirector1,027,500——47,500—10b5-1
Jun 4, 2026 AForm 4 →Jun 8, 4:18 pm EDTLaura W LangDirector8,475——82,840—
Jun 4, 2026 AForm 4 →Jun 8, 4:18 pm EDTDavid PlouffeDirector8,475——137,121—
Jun 4, 2026 AForm 4 →Jun 8, 4:18 pm EDTSid SankaranDirector8,475——22,609—
Jun 4, 2026 AForm 4 →Jun 8, 4:18 pm EDTWilliam GassenDirector8,475——82,840—
Jun 4, 2026 AForm 4 →Jun 8, 4:17 pm EDTVanessa Ames WittmanDirector8,475——137,121—
Jun 2, 2026 SForm 4 →Jun 4, 4:17 pm EDTVictoria BaltrusChief Accounting Officer1,523$21.94$33,417214,589−0.70%10b5-1
Jun 2, 2026 SForm 4 →Jun 4, 4:16 pm EDTMario SchlosserDirector34,120$21.94$748,633480,866−6.63%10b5-1
Jun 2, 2026 SForm 4 →Jun 4, 4:16 pm EDTAdam McAnaneyChief Legal Officer9,859$21.94$216,318218,096−4.32%10b5-1
Jun 2, 2026 SForm 4 →Jun 4, 4:16 pm EDTJanet LiangPresident, Oscar Insurance12,475$21.94$273,716259,057−4.59%10b5-1
Jun 2, 2026 SForm 4 →Jun 4, 4:15 pm EDTRichard Scott BlackleyChief Financial Officer31,683$21.94$695,1621,074,977−2.86%10b5-1

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 18, 2026 JForm 4 →Sep 18, 8:27 pm EDTJoshua KushnerCo-Founder and Vice Chairman, Director, 10% Owner12,687,234——75,520—
Sep 18, 2026 JForm 4 →Sep 18, 8:21 pm EDTThrive Partners II GP, LLC +8Director, 10% Owner12,687,234——75,520—
Aug 27, 2026 CMForm 4 →Aug 31, 4:16 pm EDTMario SchlosserDirector2,250,000$9.75$7,312,5001,212,293—
Jul 9, 2026 AForm 4 →Jul 13, 4:16 pm EDTWilliam GassenDirector684$31.20$21,3417,071—
Jul 9, 2026 AForm 4 →Jul 13, 4:16 pm EDTSid SankaranDirector858$31.20$26,7702,061—
Jul 9, 2026 AForm 4 →Jul 13, 4:14 pm EDTDavid PlouffeDirector681$31.20$21,2477,535—
Jul 1, 2026 CForm 4 →Jul 6, 4:11 pm EDTMario SchlosserDirector47,500——538,333—10b5-1
Jun 23, 2026 CMForm 4 →Jun 25, 4:17 pm EDTMario SchlosserDirector2,347,500$9.75$6,435,000585,833—10b5-1