Armstrong Brian
Chairman and CEO
Armstrong Brian has filed 16 SEC Form 4 filings (126 transaction rows) across 1 company, with disclosures dating back to 2025. 7 of those filings fall inside the rolling window. Most recent filing: Jan 7, 2026.
On the most recent filing, Armstrong Brian is listed as Chairman and CEO at Coinbase Global, Inc. Inside the rolling window, Armstrong Brian reported no open-market purchases and 7 open-market sales totaling $68.5M in COIN. The largest disclosed transaction in the window is a sale of 40,000 COIN shares on Dec 8, 2025, worth $11.0M.
Companies traded
Other insiders at COIN
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$68.5M
reported sales (SEC code S)
Companies
1
in the rolling window
| Source | |||||||
|---|---|---|---|---|---|---|---|
| COIN | Chairman and CEO | Sale | 40,000 | $10.0M | Jan 7 | SEC ↗ | |
| COIN | Chairman and CEO | Sale | 40,000 | $10.0M | Dec 23 | SEC ↗ | |
| COIN | Chairman and CEO | Sale | 40,000 | $11.0M | Dec 10 | SEC ↗ | |
| COIN | Chairman and CEO | Sale | 40,000 | $10.3M | Dec 10 | SEC ↗ | |
| COIN | Chairman and CEO | Sale | 40,000 | $10.9M | Nov 19 | SEC ↗ | |
| COIN | Chairman and CEO | Sale | 25,000 | $8.0M | Nov 14 | SEC ↗ | |
| COIN | Chairman and CEO | Sale | 25,000 | $8.4M | Nov 5 | SEC ↗ |
Earlier trades
Open-market purchases and sales filed before the rolling 365-day window, kept from the original Form 4 filings.
| Date | Ticker | Type | Value |
|---|---|---|---|
| Oct 13, 2025 | COIN | Sale | $59K |
| Oct 13, 2025 | COIN | Sale | $427K |
| Oct 13, 2025 | COIN | Sale | $2.1M |
| Oct 13, 2025 | COIN | Sale | $3.2M |
| Oct 13, 2025 | COIN | Sale | $2.3M |
| Oct 13, 2025 | COIN | Sale | $990K |
| Oct 2, 2025 | COIN | Sale | $766K |
| Oct 2, 2025 | COIN | Sale | $4.9M |
| Oct 2, 2025 | COIN | Sale | $1.9M |
| Oct 2, 2025 | COIN | Sale | $1.4M |
| Sep 15, 2025 | COIN | Sale | $2.4M |
| Sep 15, 2025 | COIN | Sale | $3.6M |
| Sep 15, 2025 | COIN | Sale | $2.1M |
| Sep 4, 2025 | COIN | Sale | $1.8M |
| Sep 4, 2025 | COIN | Sale | $2.0M |
| Sep 4, 2025 | COIN | Sale | $3.8M |
Frequently asked questions
How many SEC Form 4 filings has Armstrong Brian made?
Armstrong Brian has filed 16 SEC Form 4 filings (126 transaction rows) across 1 company since 2025.
Which companies does Armstrong Brian trade?
Armstrong Brian has filed SEC Form 4 disclosures for 1 company, including COIN.
When was Armstrong Brian's most recent SEC Form 4 filing?
Armstrong Brian's most recent SEC Form 4 filing on Tracefour is dated Jan 7, 2026.
What is Armstrong Brian's job title?
On the most recent SEC Form 4 filings tracked by Tracefour, Armstrong Brian is listed as Chairman and CEO.
What is Armstrong Brian's total buy and sell value in the current window?
Inside the rolling retention window, Armstrong Brian bought $0 and sold $68.5M based on SEC Form 4 filings.
What was Armstrong Brian's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 40,000 COIN shares on 2025-12-08, worth $11.0M, per SEC Form 4 filings.