MGNI Magnite, Inc.

NASDAQ
$23.97

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.

30D 90D 6M 1Y
Insider signal In line Selling ran in line with MGNI's own trailing one-year pace, with 96% of sale value under a prearranged plan.
Cluster activity 0 buyers in the last 30 days 0 buyers in the last 90 days 11 sellers in the last 90 days
Insiders buying
0
0 transactions
Insiders selling
13
51 transactions
Purchases
$0
0 shares
Sales
$26.7M
1,289,705 shares
Net activity
-$26.7M
purchases less sales

How much of that selling was preplanned? 96% planned / 4% discretionary

10b5-1 plan sales $25.5M 46 transactions · 1,234,363 shares
Discretionary sales $1.1M 5 transactions · 55,342 shares

Largest single sale: $6.7M.

Where they traded

Buy Sell Dot area is proportional to transaction value.

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
Buckley Sean Patrick See Remarks Sell 10b5-1 19,233 $19.00 $365.4K 373,514 −4.9% of holding
Buonasera David CHIEF TECHNOLOGY OFFICER Sell 10b5-1 1,409 $19.00 $26.8K 279,085 −0.5% of holding
BARRETT MICHAEL G. CEO Sell 10b5-1 100,000 $17.50 $1.8M 403,074 −19.9% of holding
Knopper Douglas S Director Sell 10b5-1 37,337 $18.10 $675.8K 125,810 −22.9% of holding
Buonasera David CHIEF TECHNOLOGY OFFICER Sell 10b5-1 11,233 $18.00 $202.2K 280,494 −3.9% of holding
BARRETT MICHAEL G. CEO Sell 10b5-1 178,596 $16.59 $3.0M 403,074 −30.7% of holding
Buonasera David CHIEF TECHNOLOGY OFFICER Sell 10b5-1 1,057 $17.00 $18.0K 291,727 −0.4% of holding
Knopper Douglas S Director Sell 10b5-1 10,766 $15.73 $169.3K 163,147 −6.2% of holding
PEARSON DAVID T. Director Sell 10b5-1 10,766 $15.65 $168.5K 79,001 −12% of holding
Buonasera David CHIEF TECHNOLOGY OFFICER Sell 10b5-1 1,409 $15.00 $21.1K 292,784 −0.5% of holding
Spillane Robert F Director Sell 10,000 $13.33 $133.3K 43,917 −18.5% of holding
Soroca Adam Lee CHIEF PRODUCT OFFICER Sell 10b5-1 21,529 $12.00 $258.3K 388,425 −5.3% of holding
Soroca Adam Lee CHIEF PRODUCT OFFICER Sell 10b5-1 16,656 $17.00 $283.2K 326,114 −4.9% of holding
Buckley Sean Patrick President, Revenue Sell 10b5-1 2,213 $14.50 $32.1K 268,912 −0.8% of holding
Spillane Robert F Director Sell 12,500 $14.22 $177.8K 53,917 −18.8% of holding
Soroca Adam Lee CHIEF PRODUCT OFFICER Sell 10b5-1 10,857 $13.23 $143.6K 326,114 −3.2% of holding
Buckley Sean Patrick President, Revenue Sell 10b5-1 4,426 $13.36 $59.1K 271,125 −1.6% of holding
Caine Paul Director Sell 10b5-1 5,000 $20.00 $100.0K 153,603 −3.2% 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.