Biggest Insider Buys: January 2026
The largest open-market insider purchases disclosed in SEC Form 4 filings, ranked by dollar value.
In January 2026, 303 open-market insider purchases of $50K or more were disclosed across 123 companies in SEC Form 4 filings, totaling $999.8M. The largest single purchase was $67.4M by WATSA V PREM ET AL at Under Armour, Inc. (UA).
← All monthly rankingsLargest purchases · January 2026
| Source | |||||||
|---|---|---|---|---|---|---|---|
| UA | 10% Owner | Purchase | 13,182,469 | $67.4M | Jan 2 | SEC ↗ | |
| THM | 10% Owner | Purchase | 18,018,018 | $40.0M | Jan 27 | SEC ↗ | |
| AKTS | Director | Purchase | 2,222,222 | $40.0M | Jan 12 | SEC ↗ | |
| UA | 10% Owner | Purchase | 5,000,000 | $29.5M | Jan 21 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 370,000 | $24.8M | Jan 28 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 368,000 | $24.6M | Jan 23 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 350,000 | $23.6M | Jan 28 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 330,000 | $22.3M | Jan 23 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 325,000 | $22.1M | Jan 14 | SEC ↗ | |
| THM | 10% Owner | Purchase | 9,813,650 | $21.8M | Jan 30 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 320,000 | $21.6M | Jan 21 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 310,000 | $21.0M | Jan 21 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 308,931 | $20.9M | Jan 28 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 300,000 | $20.5M | Jan 16 | SEC ↗ | |
| AKTS | 10% Owner | Purchase | 1,112,777 | $20.0M | Jan 14 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 290,000 | $19.8M | Jan 30 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 275,000 | $19.0M | Jan 9 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 265,000 | $18.2M | Jan 7 | SEC ↗ | |
| GRX.E | Control Person of Adviser | Purchase | 1,800,000 | $18.0M | Jan 2 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 256,041 | $17.6M | Jan 14 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 237,734 | $16.5M | Jan 2 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 235,000 | $16.2M | Jan 16 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 230,000 | $16.2M | Jan 2 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 230,000 | $15.9M | Jan 14 | SEC ↗ | |
| WRB | 10% Owner | Purchase | 215,288 | $15.1M | Jan 7 | SEC ↗ |
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