BARRETT MICHAEL G. (CIK 1100612) reported 23 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-08-18). Recent activity: Sell MGNI (10,404 shares), Buy MGNI (293,968 shares), Sell MGNI (293,968 shares), Buy MGNI (38,596 shares), Sell MGNI (38,596 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-18 | MAGNITE, INC. (MGNI) | CEO | Sell | 10,404 | $257,291 |
| 2026-08-07 | MAGNITE, INC. (MGNI) | CEO | Buy | 293,968 | $1.7M |
| 2026-08-07 | MAGNITE, INC. (MGNI) | CEO | Sell | 293,968 | $6.7M |
| 2026-07-17 | MAGNITE, INC. (MGNI) | CEO | Buy | 38,596 | $223,857 |
| 2026-07-17 | MAGNITE, INC. (MGNI) | CEO | Sell | 38,596 | $785,429 |
| 2026-07-01 | MAGNITE, INC. (MGNI) | CEO | Buy | 75,000 | $435,000 |
| 2026-07-01 | MAGNITE, INC. (MGNI) | CEO | Sell | 75,000 | $1.5M |
| 2026-06-17 | MAGNITE, INC. (MGNI) | CEO | Buy | 178,596 | $1.0M |
| 2026-06-17 | MAGNITE, INC. (MGNI) | CEO | Sell | 178,596 | $3.0M |
| 2026-06-17 | MAGNITE, INC. (MGNI) | CEO | Buy | 100,000 | $580,000 |
| 2026-06-17 | MAGNITE, INC. (MGNI) | CEO | Sell | 100,000 | $1.8M |
| 2026-05-19 | MAGNITE, INC. (MGNI) | CEO | Sell | 10,404 | $133,379 |
| 2026-02-18 | MAGNITE, INC. (MGNI) | CEO | Sell | 23,549 | $275,523 |
| 2026-01-12 | MAGNITE, INC. (MGNI) | CEO | Buy | 213,750 | $0 |
| 2026-01-12 | MAGNITE, INC. (MGNI) | CEO | Sell | 109,742 | $1.8M |
| 2026-01-05 | MAGNITE, INC. (MGNI) | CEO | Buy | 94,044 | $0 |
| 2025-11-18 | MAGNITE, INC. (MGNI) | CEO | Sell | 12,198 | $172,602 |
| 2025-08-20 | MAGNITE, INC. (MGNI) | CEO | Sell | 35,951 | $857,431 |
| 2025-07-17 | MAGNITE, INC. (MGNI) | CEO | Sell | 70,900 | $1.6M |
| 2025-06-26 | MAGNITE, INC. (MGNI) | CEO | Sell | 300,000 | $6.0M |
| 2025-06-18 | MAGNITE, INC. (MGNI) | CEO | Sell | 45,000 | $799,200 |
| 2025-06-18 | MAGNITE, INC. (MGNI) | CEO | Sell | 30,000 | $570,000 |
| 2025-05-16 | MAGNITE, INC. (MGNI) | CEO | Sell | 13,086 | $207,806 |
Source: SEC Form 4 filings · as of 2026-08-18