Brian Armstrong is CEO & Chairman +1 at Coinbase Global, Inc. (COIN). They have made 8 open-market trades across 1 company since 2021, most recently 2026-01-05.
CIK 0001851492
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 8 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| COIN | 287 | $43K |
Shares reported on the most recent Form 4, priced at the 2026-01-07 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| 7d | 30d | 90d | |
|---|---|---|---|
| Accuracy | 88% | 63% | 63% |
| Avg Move | -5.7% | -6.1% | +1.6% |
| Scored | 8 | 8 | 8 |
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| COIN | SELL | 2026-01-05 | 2026-01-07 | $248.96 | $10.0M | -6.9% | -32.5% | -28.4% |
| COIN | SELL · 10b5-1 | 2025-12-22 | 2025-12-23 | $250.15 | $20.0M | +4.3% | -7.1% | -16.5% |
| COIN | SELL · 10b5-1 | 2025-12-08 | 2025-12-10 | $273.81 | $20.3M | -7.1% | -9.8% | -26.4% |
| COIN | SELL · 10b5-1 | 2025-11-26 | 2025-12-10 | $257.31 | $20.6M | -7.1% | -9.8% | -26.4% |
| COIN | SELL · 10b5-1 | 2025-11-17 | 2025-11-19 | $271.87 | $21.7M | +1.3% | -5.7% | -36.1% |
| COIN | SELL · 10b5-1 | 2025-11-10 | 2025-11-14 | $320.68 | $16.0M | -3.6% | -8.9% | -48.7% |
| COIN | SELL · 10b5-1 | 2025-11-03 | 2025-11-05 | $337.39 | $16.0M | -16.6% | -14.8% | -43.2% |
| COIN | SELL · 10b5-1 | 2025-10-13 | 2025-10-15 | $361.33 | $18.1M | +6.8% | -16.1% | -25.3% |
| COIN | SELL · 10b5-1 | 2025-10-02 | 2025-10-06 | $355.46 | $17.8M | -14.6% | -17.5% | -34.1% |
| COIN | SELL · 10b5-1 | 2025-09-15 | 2025-09-17 | $322.29 | $16.1M | +2.5% | +3.1% | -22.5% |
| COIN | SELL · 10b5-1 | 2025-09-04 | 2025-09-08 | $302.19 | $15.1M | +13.0% | +27.5% | -9.7% |
| COIN | SELL · 10b5-1 | 2025-08-12 | 2025-08-14 | $326.71 | $16.3M | -4.5% | +1.3% | -5.8% |
| COIN | SELL · 10b5-1 | 2025-08-04 | 2025-08-06 | $317.08 | $15.8M | +3.1% | -3.9% | -1.3% |
| COIN | SELL · 10b5-1 | 2025-07-01 | 2025-07-03 | $338.30 | $16.9M | +12.4% | -10.2% | -2.3% |
| COIN | SELL · 10b5-1 | 2025-06-25 | 2025-06-27 | $362.76 | $322.8M | +8.3% | +5.6% | -14.6% |
| COIN | SELL · 10b5-1 | 2025-05-14 | 2025-05-16 | $254.55 | $12.7M | -4.2% | +0.7% | +25.1% |
| COIN | SELL · 10b5-1 | 2025-05-05 | 2025-05-07 | $200.54 | $10.0M | +28.6% | +22.4% | +45.1% |
| COIN | SELL · 10b5-1 | 2025-04-23 | 2025-04-25 | $198.44 | $7.9M | -5.6% | +28.0% | +90.5% |
| COIN | SELL · 10b5-1 | 2025-04-03 | 2025-04-07 | $168.53 | $5.1M | +6.0% | +19.0% | +116.2% |
| COIN | SELL · 10b5-1 | 2025-03-25 | 2025-03-26 | $198.15 | $2.0M | -18.5% | +8.6% | +78.7% |
| COIN | SELL · 10b5-1 | 2025-03-13 | 2025-03-17 | $187.23 | $5.6M | +1.9% | -6.9% | +41.4% |
| COIN | SELL · 10b5-1 | 2025-02-11 | 2025-02-12 | $275.17 | $9.9M | -25.2% | -35.5% | -9.5% |
| COIN | SELL · 10b5-1 | 2025-02-03 | 2025-02-05 | $270.99 | $13.5M | -5.3% | -22.2% | -29.6% |
| COIN | SELL · 10b5-1 | 2025-01-13 | 2025-01-15 | $243.95 | $12.2M | +2.9% | +0.1% | -35.9% |
| COIN | SELL · 10b5-1 | 2025-01-03 | 2025-01-07 | $261.15 | $12.0M | +11.5% | +2.5% | -40.4% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.