Armstrong Brian (CIK 1851492) reported 182 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-01-07). Recent activity: Buy COIN (40,000 shares), Sell COIN (20,790 shares), Sell COIN (18,923 shares), Sell COIN (287 shares), Buy COIN (40,000 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-01-07 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Buy | 40,000 | $748,400 |
| 2026-01-07 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 20,790 | $5.2M |
| 2026-01-07 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 18,923 | $4.7M |
| 2026-01-07 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 287 | $71,753 |
| 2025-12-23 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Buy | 40,000 | $748,400 |
| 2025-12-23 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 9,138 | $2.3M |
| 2025-12-23 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 8,937 | $2.2M |
| 2025-12-23 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 11,707 | $2.9M |
| 2025-12-23 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 8,635 | $2.2M |
| 2025-12-23 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 1,583 | $399,391 |
| 2025-12-10 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 9,978 | $2.7M |
| 2025-12-10 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 4,660 | $1.3M |
| 2025-12-10 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Buy | 40,000 | $748,400 |
| 2025-12-10 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 5,213 | $1.4M |
| 2025-12-10 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 5,902 | $1.6M |
| 2025-12-10 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 12,474 | $3.4M |
| 2025-12-10 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 1,773 | $489,472 |
| 2025-12-10 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Buy | 40,000 | $748,400 |
| 2025-12-10 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 8,049 | $2.1M |
| 2025-12-10 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 5,575 | $1.4M |
| 2025-12-10 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 11,047 | $2.8M |
| 2025-12-10 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 10,235 | $2.6M |
| 2025-12-10 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 5,094 | $1.3M |
| 2025-11-19 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Buy | 40,000 | $748,400 |
| 2025-11-19 | Coinbase Global, Inc. (COIN) | Chairman and CEO | Sell | 15,711 | $4.3M |
Source: SEC Form 4 filings · as of 2026-01-07