GRAL · Insider trading · 13F holders · Congress trades
GRAIL, Inc. (GRAL)
Who is buying and selling GRAL: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 23
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $14.8M
- Congress trades, 12 months
- 0
GRAL at a glance
- Between Aug 1, 2026 and Oct 29, 2026, 3 GRAL insiders filed 7 sales worth $14.8M on SEC Form 4, and no open-market purchases; 5 of the sales were pre-planned under Rule 10b5-1.
- 23 13F filers hold GRAL among their 50 largest positions, worth $1.1B combined, including Mark Kingdon and Julian and Felix Baker. The biggest bets by portfolio weight are Arbiter Partners Capital Management LLC (39.1%), Slow Capital, Inc. (3.4%) and Timelo Investment Management Inc. (3.3%). In their latest 13Fs, 2 managers opened a new position and 6 added to one.
- No member of Congress has disclosed a trade in GRAL.
- GRAL last closed at $158.92 on Oct 29, 2026.
GRAL insider trading
Between Aug 1, 2026 and Oct 29, 2026, 3 GRAL insiders filed 7 sales worth $14.8M on SEC Form 4, and no open-market purchases; 5 of the sales were pre-planned under Rule 10b5-1.
| Filed | Insider | Role | Trade | Shares | Price | Value | Form 4 |
|---|---|---|---|---|---|---|---|
| Oct 16, 2026 | Ofman Joshua J. | Chief Executive Officer, Director | Sale10b5-1 | 20,000 | $136.85 | $2.7M | SEC |
| Oct 7, 2026 | Freidin Aaron | Chief Financial Officer | Sale | 23,619 | $146.39 | $3.5M | SEC |
| Oct 7, 2026 | Partridge Andrew John | Chief Growth Officer | Sale | 7,873 | $146.39 | $1.2M | SEC |
| Sep 23, 2026 | Ofman Joshua J. | Chief Executive Officer, Director | Sale10b5-1 | 61,452 | $97.74 | $6.0M | SEC |
| Sep 23, 2026 | Freidin Aaron | Chief Financial Officer | Sale10b5-1 | 4,100 | $93.34 | $383K | SEC |
| Aug 31, 2026 | Freidin Aaron | Chief Financial Officer | Sale10b5-1 | 7,900 | $85.01 | $672K | SEC |
| Aug 31, 2026 | Ofman Joshua J. | Chief Executive Officer, Director | Sale10b5-1 | 5,000 | $85.02 | $425K | SEC |
Who owns GRAL? Hedge funds and superinvestors
23 13F filers hold GRAL among their 50 largest positions, worth $1.1B combined, including Mark Kingdon and Julian and Felix Baker. The biggest bets by portfolio weight are Arbiter Partners Capital Management LLC (39.1%), Slow Capital, Inc. (3.4%) and Timelo Investment Management Inc. (3.3%). In their latest 13Fs, 2 managers opened a new position and 6 added to one.
Superinvestors holding GRAL: Mark Kingdon 3.1% · Julian and Felix Baker 1.4%
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Farallon Capital Management, L.l.c.Hedge fund | 1.7% | $284.1M | 4,161,584 | +27.9% shares | Q2 2026 |
| Julian and Felix BakerHedge fund | 1.4% | $275.0M | 4,028,614 | +0.0% shares | Q2 2026 |
| Sessa Capital IM, L.P.Hedge fund | 2.4% | $139.1M | 2,037,518 | +18.5% shares | Q2 2026 |
| Deep Track Capital, LPHedge fund | 1.8% | $125.3M | 1,834,944 | +6.5% shares | Q2 2026 |
| Arbiter Partners Capital Management LLCHedge fund | 39.1% | $70.6M | 1,034,297 | -0.0% shares | Q2 2026 |
| Jefferies Financial Group Inc.Broker-dealer | 0.5% | $49.4M | 724,000 | — | Q2 2026 |
| Casdin Capital, LLCHedge fund | 1.6% | $32.8M | 480,000 | +108.7% shares | Q2 2026 |
| Slow Capital, Inc.Institutional asset manager | 3.4% | $30.6M | 218,363 | +0.5% shares | Q3 2026 |
| Mark KingdonHedge fund | 3.1% | $23.2M | 340,000 | — | Q2 2026 |
| Granahan Investment Management, LLCAsset manager | 0.8% | $21.9M | 321,176 | — | Q2 2026 |
| Fideuram - Intesa Sanpaolo Private Banking S.p.a.Investment manager | 0.6% | $21.8M | 155,762 | — | Q3 2026 |
| Newtyn Management, LLCHedge fund | 1.3% | $10.2M | 150,000 | +0.0% shares | Q2 2026 |
| 180 Wealth Advisors, LLCWealth manager | 0.9% | $8.7M | 127,774 | +0.3% shares | Q2 2026 |
| WIM INVESTMENT MANAGEMENT LtdAsset manager | 2.4% | $7.3M | 106,400 | +0.0% shares | Q2 2026 |
| Legal Advantage Investments, Inc.Wealth manager | 1.5% | $6.8M | 48,625 | +9.0% shares | Q3 2026 |
| Simplify Asset Management Inc.Mutual fund manager | 0.1% | $6.0M | 42,969 | — | Q3 2026 |
| Pvg Asset Management CorpInstitutional asset manager | 2.5% | $3.6M | 25,659 | -0.9% shares | Q3 2026 |
| Timelo Investment Management Inc.Asset manager | 3.3% | $2.7M | 39,000 | +160.0% shares | Q2 2026 |
| William John SempolinskiInvestment manager | 0.7% | $1.9M | 13,525 | — | Q3 2026 |
| Gem Investment Advisors, LLCHedge fund | 1.1% | $1.8M | 26,781 | +0.0% shares | Q2 2026 |
| Yorktown Management & Research Co IncMutual fund manager | 0.5% | $806K | 5,750 | — | Q3 2026 |
| Marble Bar Asset Management LLPHedge fund | 0.4% | $539K | 7,895 | New | Q2 2026 |
| Empirical Capital Management, LLCHedge fund | 0.1% | $280K | 2,000 | New | Q3 2026 |
Each manager counts with its latest 13F (Q3 2026: 8, Q2 2026: 15). Screen GRAL in the grand portfolio →
GRAL stock trades by members of Congress
No member of Congress has disclosed a trade in GRAL.
Analysis mentioning GRAL
Posts from the blog that cover GRAIL, Inc., newest first.
GRAL questions and answers
Are insiders buying GRAL stock?
Between Aug 1, 2026 and Oct 29, 2026, 3 GRAL insiders filed 7 sales worth $14.8M on SEC Form 4, and no open-market purchases; 5 of the sales were pre-planned under Rule 10b5-1.
Which hedge funds own GRAL?
23 13F filers hold GRAL among their 50 largest positions, worth $1.1B combined, including Mark Kingdon and Julian and Felix Baker. The biggest bets by portfolio weight are Arbiter Partners Capital Management LLC (39.1%), Slow Capital, Inc. (3.4%) and Timelo Investment Management Inc. (3.3%). In their latest 13Fs, 2 managers opened a new position and 6 added to one.
Has Congress traded GRAL?
No member of Congress has disclosed a trade in GRAL.
Who is the largest holder of GRAL?
Among 13F filers, Farallon Capital Management, L.l.c. reports the largest GRAL position, $284.1M (4,161,584 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Arbiter Partners Capital Management LLC's: 39.1% of its portfolio.
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