Insider buyers were busy on Jan 21, 2026: 18 companies, $106.1 million in open-market purchases all told. At the top: UA, $49.7 million bought, with WATSA V PREM ET AL as the largest buyer.
Four of the buys came from a CEO or CFO. 43 companies had three or more insiders buying in the past 30 days. One buy doesn't make a thesis, but it's a good place to start digging.
| Stock | Company | Bought | Insiders | Largest buyer | Source |
|---|---|---|---|---|---|
| UA | Under Armour, Inc. | $49.7M | 1 | WATSA V PREM ET AL 10% Owner | SEC filing |
| WRB | BERKLEY W R CORP | $42.6M | 1 | MS&AD Insurance Group Holdin 10% Owner | SEC filing |
| AVO | Mission Produce, Inc. | $7.8M | 1 | Globalharvest Holdings Ventu 10% Owner | SEC filing |
| TCI | TRANSCONTINENTAL REALTY INVESTORS INC | $3.9M | 1 | AMERICAN REALTY INVESTORS IN 10% Owner | SEC filing |
| MIGI | Mawson Infrastructure Group Inc. | $655K | 1 | Endeavor Blockchain, LLC 10% Owner | SEC filing |
| UUU | UNIVERSAL SAFETY PRODUCTS, INC. | $570K | 1 | AULT MILTON C III Director | SEC filing |
| CABA | Cabaletta Bio, Inc. | $296K | 8 | Nichtberger Steven CEO | SEC filing |
| GME | GameStop Corp. | $260K | 1 | Attal Alain Director | SEC filing |
| COSM | Cosmos Health Inc. | $177K | 1 | Siokas Grigorios CEO | SEC filing |
| MSTR | Strategy Inc | $99K | 1 | Dietze Jane A Director | SEC filing |
| IMRX | Immuneering Corp | $25K | 1 | Brakewood Harold Eugene Executive Officer | SEC filing |
| OTH | OFF THE HOOK YS INC. | $13K | 1 | Gonnelli Robert Rosario Director | SEC filing |
| ISBA | ISABELLA BANK CORP | $12K | 1 | Bourland Jill Director | SEC filing |
| PALI | PALISADE BIO, INC. | $8K | 1 | Williams Donald Allen Director | SEC filing |
| IRIX | IRIDEX CORP | $6K | 1 | Dizon Romeo R CFO | SEC filing |
| RCG | RENN Fund, Inc. | $3K | 1 | STAHL MURRAY President | SEC filing |
| BCDA | BioCardia, Inc. | $1K | 1 | Altman Peter CEO | SEC filing |
| TPL | Texas Pacific Land Corp | $334 | 1 | HORIZON KINETICS ASSET MANAG 10% Owner | SEC filing |
| Stock | Company | Bought | Insiders | Largest buyer | Source |
|---|---|---|---|---|---|
| CABA | Cabaletta Bio, Inc. | $296K | 8 | Nichtberger Steven CEO | SEC filing |
| COSM | Cosmos Health Inc. | $177K | 1 | Siokas Grigorios CEO | SEC filing |
| IRIX | IRIDEX CORP | $6K | 1 | Dizon Romeo R CFO | SEC filing |
| BCDA | BioCardia, Inc. | $1K | 1 | Altman Peter CEO | SEC filing |
← Jan 20, 2026 · This week's CEO buys · All days · Congress trades (free)