MGNI Magnite, Inc.
Magnite, Inc. (MGNI) Insider Activity
What the officers, directors and large holders did with their own shares. Only open-market purchases and sales count toward the totals — grants, option exercises and shares withheld for tax are compensation mechanics, not decisions, and they're listed separately below.
How much of that selling was preplanned? 96% planned / 4% discretionary
Largest single sale: $6.7M.
Where they traded
No open-market insider purchase on record.
Recent open-market activity
| Date | Insider | Role | Action | Shares | Price | Value | Held after |
|---|---|---|---|---|---|---|---|
| Knopper Douglas S | Director | Sell 10b5-1 | 37,337 | $26.28 | $981.2K | 51,136 −42.2% of holding | |
| Caine Paul | Director | Sell 10b5-1 | 7,500 | $26.50 | $198.8K | 137,401 −5.2% of holding | |
| Spillane Robert F | Director | Sell | 10,363 | $23.76 | $246.2K | 57,715 −15.2% of holding | |
| Buonasera David | CHIEF TECHNOLOGY OFFICER | Sell 10b5-1 | 1,165 | $24.00 | $28.0K | 245,155 −0.5% of holding | |
| Evans Katie Seitz | See Remarks | Sell 10b5-1 | 13,997 | $24.00 | $335.9K | 441,800 −3.1% of holding | |
| Saltz Aaron | CHIEF LEGAL OFFICER | Sell 10b5-1 | 40,000 | $23.41 | $936.4K | 224,389 −15.1% of holding | |
| Caine Paul | Director | Sell 10b5-1 | 5,000 | $23.53 | $117.7K | 144,901 −3.3% of holding | |
| Evans Katie Seitz | See Remarks | Sell 10b5-1 | 11,100 | $23.46 | $260.4K | 455,797 −2.4% of holding | |
| Evans Katie Seitz | See Remarks | Sell 10b5-1 | 32,285 | $23.63 | $762.9K | 466,897 −6.5% of holding | |
| Buonasera David | CHIEF TECHNOLOGY OFFICER | Sell 10b5-1 | 1,043 | $25.00 | $26.1K | 246,320 −0.4% of holding | |
| Buonasera David | CHIEF TECHNOLOGY OFFICER | Sell 10b5-1 | 5,371 | $23.42 | $125.8K | 247,363 −2.1% of holding | |
| Harden Sarah Patricia | Director | Sell 10b5-1 | 18,436 | $24.00 | $442.5K | 114,751 −13.8% of holding | |
| Harden Sarah Patricia | Director | Sell 10b5-1 | 30,550 | $23.31 | $712.1K | 133,187 −18.7% of holding | |
| Buckley Sean Patrick | See Remarks | Sell 10b5-1 | 2,759 | $25.00 | $69.0K | 293,060 −0.9% of holding | |
| Buckley Sean Patrick | See Remarks | Sell 10b5-1 | 8,271 | $24.31 | $201.1K | 295,819 −2.7% of holding | |
| Caine Paul | Director | Sell 10b5-1 | 7,500 | $25.00 | $187.5K | 149,901 −4.8% of holding | |
| Gephart Brian | CHIEF ACCOUNTING OFFICER | Sell | 12,479 | $24.68 | $308.0K | 106,117 −10.5% of holding | |
| Lam Rachel | Director | Sell | 10,000 | $24.16 | $241.6K | 230,620 −4.2% of holding | |
| Caine Paul | Director | Sell 10b5-1 | 5,000 | $24.35 | $121.8K | 157,401 −3.1% of holding | |
| BARRETT MICHAEL G. | CEO | Sell 10b5-1 | 293,968 | $22.72 | $6.7M | 403,074 −42.2% of holding | |
| Buckley Sean Patrick 2 fills | See Remarks | Sell 10b5-1 | 67,179 | $24.49 | $1.6M | 335,042 −16.7% of holding | |
| Knopper Douglas S | Director | Sell 10b5-1 | 37,337 | $22.72 | $848.3K | 88,473 −29.7% of holding | |
| Evans Katie Seitz | See Remarks | Sell 10b5-1 | 20,000 | $24.00 | $480.0K | 496,840 −3.9% of holding | |
| Buonasera David 3 fills | CHIEF TECHNOLOGY OFFICER | Sell 10b5-1 | 7,649 | $23.46 | $179.5K | 264,309 −2.8% of holding | |
| BARRETT MICHAEL G. | CEO | Sell 10b5-1 | 38,596 | $20.35 | $785.4K | 403,074 −8.7% of holding | |
| Caine Paul | Director | Sell 10b5-1 | 5,000 | $20.64 | $103.2K | 162,401 −3% of holding | |
| Buckley Sean Patrick | See Remarks | Sell 10b5-1 | 19,233 | $21.03 | $404.5K | 354,281 −5.1% of holding | |
| Buonasera David | CHIEF TECHNOLOGY OFFICER | Sell 10b5-1 | 1,224 | $21.00 | $25.7K | 268,485 −0.5% of holding | |
| Buonasera David | CHIEF TECHNOLOGY OFFICER | Sell 10b5-1 | 9,376 | $20.00 | $187.5K | 269,709 −3.4% of holding | |
| BARRETT MICHAEL G. | CEO | Sell 10b5-1 | 75,000 | $19.50 | $1.5M | 403,074 −15.7% of holding |
Form 4s are due within two business days of a transaction, so this is close to real time — unlike the quarterly 13F data on the Institutional tab. A single large sale often reflects a prearranged 10b5-1 plan rather than a fresh view, so read a pattern of sales rather than any one of them.