Stock Scorer

Magnite, Inc. (MGNI) · Insider trading

What Magnite's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.

Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$26.97M
13 insiders, 96% under a plan
Net, 12 months
−$26.97M
bought less sold
Latest filing
2026-10-14
filings read to 2026-10-19

Bought and sold at the market, by month

Two years. Purchases above the line, sales below, in dollars.

2024-11: $3.98M sold 2024-12: $3.04M sold 2025-01: $226,865 sold 2025-01 2025-02: $5.22M sold 2025-03: $344,109 sold 2025-05: $769,952 sold 2025-06: $16.89M sold 2025-07: $2.83M sold 2025-07 2025-08: $5.33M sold 2025-09: $3.04M sold 2025-10: $100,000 sold 2025-11: $412,608 sold 2025-12: $283,152 sold 2026-01 2026-02: $258,348 sold 2026-05: $133,300 sold 2026-06: $7.82M sold 2026-07: $1.51M sold 2026-07 2026-08: $12.12M sold 2026-09: $4.02M sold 2026-10: $316,125 sold
Bought Sold Largest month: $16.89M

Who traded, two years

InsiderBoughtSold TradesLast tradeHolds after
Barrett Michael G.Director, CEO – $28.58M 14 2026-08-06 403,074
Rossman JamesDirector – $5.49M 2 2025-06-18 93,679
Buckley Sean PatrickSee Remarks – $5.22M 18 2026-08-18 293,060
Evans Katie SeitzSee Remarks – $4.86M 13 2026-09-11 441,800
Soroca Adam LeeCHIEF PRODUCT OFFICER – $4.71M 15 2026-02-18 388,425
Day DavidCHIEF FINANCIAL OFFICER – $4.63M 10 2025-08-18 382,106
Saltz AaronCHIEF LEGAL OFFICER – $3.54M 12 2026-09-10 224,389
Knopper Douglas SDirector – $2.67M 4 2026-09-17 51,136
Caine PaulDirector – $2.07M 15 2026-10-12 124,901
Buonasera DavidCHIEF TECHNOLOGY OFFICER – $1.91M 22 2026-09-14 245,155
Gephart BrianCHIEF ACCOUNTING OFFICER – $1.33M 7 2026-08-10 106,117
Harden Sarah PatriciaDirector – $1.15M 2 2026-08-28 114,751
Spillane Robert FDirector – $1.02M 5 2026-09-14 57,715
Lam RachelDirector – $575,350 2 2026-08-10 230,620
Yu DianeDirector – $504,600 1 2025-08-26 67,481
Pearson David T.Director – $371,099 2 2026-06-10 79,001

Open-market purchases and sales

Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.

DateInsiderTradeShares PriceValueHolds afterFiling
2026-10-12 Caine PaulDirector Saleplan 12,500 25.29 $316,125 124,901 Form 4
2026-09-17 Knopper Douglas SDirector Saleplan 37,337 26.28 $981,216 51,136 Form 4
2026-09-17 Caine PaulDirector Saleplan 7,500 26.50 $198,750 137,401 Form 4
2026-09-14 Spillane Robert FDirector Sale 10,363 23.76 $246,225 57,715 Form 4
2026-09-14 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 1,165 24.00 $27,960 245,155 Form 4
2026-09-11 Evans Katie SeitzSee Remarks Saleplan 13,997 24.00 $335,928 441,800 Form 4
2026-09-10 Caine PaulDirector Saleplan 5,000 23.53 $117,650 144,901 Form 4
2026-09-10 Saltz AaronCHIEF LEGAL OFFICER Saleplan 40,000 23.41 $936,400 224,389 Form 4
2026-09-09 Evans Katie SeitzSee Remarks Saleplan 11,100 23.46 $260,406 455,797 Form 4
2026-09-08 Evans Katie SeitzSee Remarks Saleplan 32,285 23.63 $762,895 466,897 Form 4
2026-09-02 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 1,043 25.00 $26,075 246,320 Form 4
2026-09-01 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 5,371 23.42 $125,789 247,363 Form 4
2026-08-28 Harden Sarah PatriciaDirector Saleplan 18,436 24.00 $442,464 114,751 Form 4
2026-08-26 Harden Sarah PatriciaDirector Saleplan 30,550 23.31 $712,120 133,187 Form 4
2026-08-18 Buckley Sean PatrickSee Remarks Saleplan 2,759 25.00 $68,975 293,060 Form 4
2026-08-17 Buckley Sean PatrickSee Remarks Saleplan 8,271 24.31 $201,068 295,819 Form 4
2026-08-14 Caine PaulDirector Saleplan 7,500 25.00 $187,500 149,901 Form 4
2026-08-10 Caine PaulDirector Saleplan 5,000 24.35 $121,750 157,401 Form 4
2026-08-10 Lam RachelDirector Sale 10,000 24.16 $241,600 230,620 Form 4
2026-08-10 Gephart BrianCHIEF ACCOUNTING OFFICER Sale 12,479 24.68 $307,982 106,117 Form 4
2026-08-06 Barrett Michael G.Director, CEO Saleplan 293,968 22.72 $6.68M 403,074 Form 4
2026-08-06 Knopper Douglas SDirector Saleplan 37,337 22.72 $848,297 88,473 Form 4
2026-08-06 Evans Katie SeitzSee Remarks Saleplan 20,000 24.00 $480,000 496,840 Form 4
2026-08-06 Buckley Sean PatrickSee Remarks Saleplan 47,942 25.09 $1.20M 335,042 Form 4
2026-08-06 Buckley Sean PatrickSee Remarks Saleplan 19,237 23.00 $442,451 315,805 Form 4
2026-08-06 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 4,176 22.81 $95,255 264,309 Form 4
2026-08-06 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 2,602 24.00 $62,448 261,707 Form 4
2026-08-06 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 871 25.00 $21,775 260,836 Form 4
2026-07-15 Barrett Michael G.Director, CEO Saleplan 38,596 20.35 $785,429 403,074 Form 4
2026-07-10 Caine PaulDirector Saleplan 5,000 20.64 $103,200 162,401 Form 4
2026-07-07 Buckley Sean PatrickSee Remarks Saleplan 19,233 21.03 $404,470 354,281 Form 4
2026-07-07 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 1,224 21.00 $25,704 268,485 Form 4
2026-07-01 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 9,376 20.00 $187,520 269,709 Form 4
2026-06-29 Barrett Michael G.Director, CEO Saleplan 75,000 19.50 $1.46M 403,074 Form 4
2026-06-17 Buckley Sean PatrickSee Remarks Saleplan 19,233 19.00 $365,427 373,514 Form 4
2026-06-17 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 1,409 19.00 $26,771 279,085 Form 4
2026-06-16 Barrett Michael G.Director, CEO Saleplan 100,000 17.50 $1.75M 403,074 Form 4
2026-06-16 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 11,233 18.00 $202,194 280,494 Form 4
2026-06-16 Knopper Douglas SDirector Saleplan 37,337 18.10 $675,800 125,810 Form 4
2026-06-15 Barrett Michael G.Director, CEO Saleplan 178,596 16.59 $2.96M 403,074 Form 4
104 more
2026-06-15 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 1,057 17.00 $17,969 291,727 Form 4
2026-06-10 Pearson David T.Director Saleplan 10,766 15.65 $168,488 79,001 Form 4
2026-06-10 Knopper Douglas SDirector Saleplan 10,766 15.73 $169,349 163,147 Form 4
2026-06-01 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 1,409 15.00 $21,135 292,784 Form 4
2026-05-19 Spillane Robert FDirector Sale 10,000 13.33 $133,300 43,917 Form 4
2026-02-18 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 21,529 12.00 $258,348 388,425 Form 4
2025-12-17 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 16,656 17.00 $283,152 326,114 Form 4
2025-11-24 Buckley Sean PatrickPresident, Revenue Saleplan 2,213 14.50 $32,088 268,912 Form 4
2025-11-21 Spillane Robert FDirector Sale 12,500 14.22 $177,750 53,917 Form 4
2025-11-18 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 10,857 13.23 $143,638 326,114 Form 4
2025-11-18 Buckley Sean PatrickPresident, Revenue Saleplan 4,426 13.36 $59,131 271,125 Form 4
2025-10-24 Caine PaulDirector Saleplan 5,000 20.00 $100,000 153,603 Form 4
2025-09-19 Caine PaulDirector Saleplan 7,500 25.00 $187,500 158,603 Form 4
2025-09-19 Saltz AaronCHIEF LEGAL OFFICER Saleplan 8,522 24.50 $208,789 215,079 Form 4
2025-09-15 Saltz AaronCHIEF LEGAL OFFICER Saleplan 6,180 23.94 $147,949 223,601 Form 4
2025-09-10 Caine PaulDirector Saleplan 3,811 23.50 $89,558 167,292 Form 4
2025-09-10 Caine PaulDirector Saleplan 1,189 23.91 $28,429 166,103 Form 4
2025-09-09 Buckley Sean PatrickPresident, Revenue Sale 20,000 24.61 $492,200 287,193 Form 4
2025-09-08 Buckley Sean PatrickPresident, Revenue Sale 20,000 25.56 $511,200 307,193 Form 4
2025-09-04 Gephart BrianCHIEF ACCOUNTING OFFICER Saleplan 27,671 24.71 $683,750 92,898 Form 4
2025-09-03 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 2,950 25.37 $74,842 238,629 Form 4
2025-09-02 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 9,269 24.22 $224,495 362,110 Form 4
2025-09-02 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 15,717 24.97 $392,453 346,393 Form 4
2025-08-29 Saltz AaronCHIEF LEGAL OFFICER Sale 12,403 26.07 $323,346 229,781 Form 4
2025-08-27 Evans Katie SeitzPresident, Operations Sale 21,509 25.52 $548,910 394,089 Form 4
2025-08-26 Yu DianeDirector Sale 20,000 25.23 $504,600 67,481 Form 4
2025-08-25 Evans Katie SeitzPresident, Operations Saleplan 8,345 26.00 $216,970 415,598 Form 4
2025-08-25 Caine PaulDirector Saleplan 7,500 25.00 $187,500 171,103 Form 4
2025-08-19 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 10,579 23.47 $248,289 346,393 Form 4
2025-08-19 Buckley Sean PatrickPresident, Revenue Saleplan 9,315 23.42 $218,157 327,193 Form 4
2025-08-18 Barrett Michael G.Director, CEO Sale 35,951 23.85 $857,431 249,857 Form 4
2025-08-18 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 9,700 23.85 $231,345 356,972 Form 4
2025-08-18 Gephart BrianCHIEF ACCOUNTING OFFICER Sale 2,961 23.85 $70,620 120,569 Form 4
2025-08-18 Buonasera DavidCHIEF TECHNOLOGY OFFICER Sale 7,834 23.85 $186,841 241,579 Form 4
2025-08-18 Buckley Sean PatrickPresident, Revenue Saleplan 10,886 23.85 $259,631 336,508 Form 4
2025-08-18 Saltz AaronCHIEF LEGAL OFFICER Sale 5,770 23.85 $137,614 242,184 Form 4
2025-08-18 Evans Katie SeitzPresident, Operations Sale 10,487 23.85 $250,115 423,943 Form 4
2025-08-18 Day DavidCHIEF FINANCIAL OFFICER Sale 13,366 23.85 $318,779 382,106 Form 4
2025-08-14 Saltz AaronCHIEF LEGAL OFFICER Sale 13,860 23.34 $323,492 247,954 Form 4
2025-08-12 Lam RachelDirector Sale 15,000 22.25 $333,750 226,822 Form 4
2025-08-11 Caine PaulDirector Saleplan 5,000 22.29 $111,450 178,603 Form 4
2025-07-15 Barrett Michael G.Director, CEO Saleplan 70,900 23.27 $1.65M 285,808 Form 4
2025-07-10 Caine PaulDirector Saleplan 5,000 23.53 $117,650 183,603 Form 4
2025-07-03 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 42,584 25.00 $1.06M 366,672 Form 4
2025-06-30 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 9,289 22.00 $204,358 249,413 Form 4
2025-06-30 Day DavidCHIEF FINANCIAL OFFICER Saleplan 21,682 22.00 $477,004 421,846 Form 4
2025-06-30 Saltz AaronCHIEF LEGAL OFFICER Saleplan 17,574 22.00 $386,628 261,814 Form 4
2025-06-30 Evans Katie SeitzPresident, Operations Saleplan 8,358 22.00 $183,876 450,567 Form 4
2025-06-30 Evans Katie SeitzPresident, Operations Saleplan 16,137 24.00 $387,288 434,430 Form 4
2025-06-26 Day DavidCHIEF FINANCIAL OFFICER Saleplan 36,000 20.95 $754,200 443,528 Form 4
2025-06-24 Day DavidCHIEF FINANCIAL OFFICER Saleplan 35,000 19.95 $698,250 443,528 Form 4
2025-06-24 Barrett Michael G.Director, CEO Saleplan 300,000 20.01 $6.00M 356,708 Form 4
2025-06-24 Caine PaulDirector Saleplan 5,000 20.00 $100,000 188,603 Form 4
2025-06-24 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 44,519 20.00 $890,380 400,927 Form 4
2025-06-18 Day DavidCHIEF FINANCIAL OFFICER Saleplan 38,146 18.95 $722,867 443,528 Form 4
2025-06-18 Rossman JamesDirector Saleplan 137,007 18.78 $2.57M 93,679 Form 4
2025-06-18 Barrett Michael G.Director, CEO Saleplan 30,000 19.00 $570,000 656,708 Form 4
2025-06-16 Barrett Michael G.Director, CEO Saleplan 45,000 17.76 $799,200 686,708 Form 4
2025-06-16 Saltz AaronCHIEF LEGAL OFFICER Saleplan 16,788 17.50 $293,790 279,388 Form 4
2025-06-16 Evans Katie SeitzPresident, Operations Saleplan 20,000 18.50 $370,000 442,788 Form 4
2025-06-10 Spillane Robert FDirector Sale 15,000 17.57 $263,550 66,417 Form 4
2025-06-06 Pearson David T.Director Saleplan 11,512 17.60 $202,611 75,969 Form 4
2025-06-06 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 8,328 17.70 $147,406 437,117 Form 4
2025-06-05 Evans Katie SeitzPresident, Operations Saleplan 35,000 17.36 $607,600 442,788 Form 4
2025-06-04 Saltz AaronCHIEF LEGAL OFFICER Sale 15,328 16.71 $256,131 296,176 Form 4
2025-05-27 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 8,742 16.00 $139,872 258,702 Form 4
2025-05-23 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 3,653 15.03 $54,905 267,444 Form 4
2025-05-20 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 8,328 17.00 $141,576 437,117 Form 4
2025-05-16 Buckley Sean PatrickPresident, Revenue Saleplan 9,692 15.73 $152,455 347,394 Form 4
2025-05-16 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 11,366 15.73 $178,787 437,117 Form 4
2025-05-12 Gephart BrianCHIEF ACCOUNTING OFFICER Sale 6,334 16.16 $102,357 126,575 Form 4
2025-03-03 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 15,499 15.75 $244,109 458,386 Form 4
2025-03-03 Gephart BrianCHIEF ACCOUNTING OFFICER Sale 6,250 16.00 $100,000 132,909 Form 4
2025-02-19 Buckley Sean PatrickPresident, Revenue Saleplan 10,527 19.13 $201,382 370,558 Form 4
2025-02-10 Caine PaulDirector Saleplan 5,000 20.35 $101,750 182,837 Form 4
2025-02-07 Day DavidCHIEF FINANCIAL OFFICER Saleplan 39,000 20.00 $780,000 488,506 Form 4
2025-02-07 Saltz AaronCHIEF LEGAL OFFICER Saleplan 17,947 19.75 $354,453 330,630 Form 4
2025-02-07 Evans Katie SeitzPresident, Operations Saleplan 12,520 20.00 $250,400 492,129 Form 4
2025-02-07 Buckley Sean PatrickPresident, Revenue Saleplan 18,693 20.00 $373,860 408,529 Form 4
2025-02-07 Rossman JamesDirector Saleplan 149,936 19.46 $2.92M 219,920 Form 4
2025-02-06 Day DavidCHIEF FINANCIAL OFFICER Saleplan 13,245 18.35 $243,046 488,506 Form 4
2025-01-03 Day DavidCHIEF FINANCIAL OFFICER Saleplan 13,345 17.00 $226,865 374,014 Form 4
2024-12-17 Day DavidCHIEF FINANCIAL OFFICER Saleplan 13,500 16.32 $220,320 387,359 Form 4
2024-12-16 Day DavidCHIEF FINANCIAL OFFICER Saleplan 11,644 16.44 $191,427 400,859 Form 4
2024-12-13 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 1,969 16.31 $32,114 223,795 Form 4
2024-12-04 Barrett Michael G.Director, CEO Saleplan 147,996 17.52 $2.59M 634,914 Form 4
2024-11-27 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 431 16.78 $7,232 225,764 Form 4
2024-11-25 Saltz AaronCHIEF LEGAL OFFICER Saleplan 6,110 17.50 $106,925 297,482 Form 4
2024-11-25 Barrett Michael G.Director, CEO Saleplan 27,004 17.63 $476,081 782,910 Form 4
2024-11-22 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 9,219 17.00 $156,723 226,195 Form 4
2024-11-22 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 8,328 17.00 $141,576 421,347 Form 4
2024-11-20 Spillane Robert FDirector Sale 12,500 16.12 $201,500 70,651 Form 4
2024-11-18 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 277 15.77 $4,368 235,414 Form 4
2024-11-18 Buckley Sean PatrickCHIEF REVENUE OFFICER Saleplan 10,001 15.60 $156,016 303,743 Form 4
2024-11-18 Soroca Adam LeeCHIEF PRODUCT OFFICER Saleplan 7,849 15.60 $122,444 421,347 Form 4
2024-11-18 Gephart BrianCHIEF ACCOUNTING OFFICER Saleplan 2,156 15.60 $33,634 112,795 Form 4
2024-11-15 Barrett Michael G.Director, CEO Saleplan 100,000 16.14 $1.61M 809,914 Form 4
2024-11-14 Buonasera DavidCHIEF TECHNOLOGY OFFICER Saleplan 12,412 16.41 $203,681 240,403 Form 4
2024-11-11 Evans Katie SeitzCHIEF OPERATING OFFICER Saleplan 12,824 16.00 $205,184 388,653 Form 4
2024-11-11 Buckley Sean PatrickCHIEF REVENUE OFFICER Saleplan 2,623 14.50 $38,034 326,496 Form 4
2024-11-11 Buckley Sean PatrickCHIEF REVENUE OFFICER Saleplan 2,619 15.50 $40,594 323,877 Form 4
2024-11-11 Barrett Michael G.Director, CEO Saleplan 25,000 15.00 $375,000 919,552 Form 4
2024-11-11 Gephart BrianCHIEF ACCOUNTING OFFICER Saleplan 2,156 15.00 $32,340 116,982 Form 4
2024-11-07 Saltz AaronCHIEF LEGAL OFFICER Saleplan 5,112 13.50 $69,012 307,745 Form 4

Grants, exercises and other transactions

Pay, tax and paperwork rather than a choice to trade at the market price. Two years.

62 × shares withheld for tax34 × grant or award32 × option exercise2 × gift
Show them
DateInsiderWhatShares PriceHolds afterFiling
2026-10-01 Gephart BrianCHIEF FINANCIAL OFFICER Grant or award A +64,682 – 167,010 Form 4
2026-10-01 Sullivan HaasCHIEF ACCOUNTING OFFICER Grant or award A +24,641 – 97,554 Form 4
2026-09-14 Spillane Robert FDirector Option exercise M +10,363 5.17 68,078 Form 4
2026-09-08 Evans Katie SeitzSee Remarks Option exercise M +13,546 5.16 499,182 Form 4
2026-08-15 Barrett Michael G.Director, CEO Shares withheld for tax F −10,404 24.73 392,670 Form 4
2026-08-15 Day DavidCHIEF FINANCIAL OFFICER Shares withheld for tax F −14,170 24.73 452,861 Form 4
2026-08-15 Evans Katie SeitzSee Remarks Shares withheld for tax F −11,204 24.73 485,636 Form 4
2026-08-15 Gephart BrianCHIEF ACCOUNTING OFFICER Shares withheld for tax F −3,789 24.73 102,328 Form 4
2026-08-15 Saltz AaronCHIEF LEGAL OFFICER Shares withheld for tax F −5,627 24.73 264,389 Form 4
2026-08-15 Buckley Sean PatrickSee Remarks Shares withheld for tax F −11,715 24.73 304,090 Form 4
2026-08-15 Buonasera DavidCHIEF TECHNOLOGY OFFICER Shares withheld for tax F −8,102 24.73 252,734 Form 4
2026-08-13 Day DavidCHIEF FINANCIAL OFFICER Gift G −26,258 – 467,031 Form 4
2026-08-06 Barrett Michael G.Director, CEO Option exercise M +293,968 5.80 697,042 Form 4
2026-08-06 Evans Katie SeitzSee Remarks Option exercise M +20,000 5.16 516,840 Form 4
2026-08-06 Buckley Sean PatrickSee Remarks Option exercise M +28,703 13.90 382,984 Form 4
2026-07-15 Barrett Michael G.Director, CEO Option exercise M +38,596 5.80 441,670 Form 4
2026-06-29 Barrett Michael G.Director, CEO Option exercise M +75,000 5.80 478,074 Form 4
2026-06-16 Barrett Michael G.Director, CEO Option exercise M +100,000 5.80 503,074 Form 4
2026-06-15 Barrett Michael G.Director, CEO Option exercise M +178,596 5.80 581,670 Form 4
2026-06-08 Pearson David T.Director Grant or award A +13,798 – 89,767 Form 4
2026-06-08 Lam RachelDirector Grant or award A +13,798 – 240,620 Form 4
2026-06-08 Rossman JamesDirector Grant or award A +13,798 – 107,477 Form 4
2026-06-08 Knopper Douglas SDirector Grant or award A +13,798 – 173,913 Form 4
2026-06-08 Harden Sarah PatriciaDirector Grant or award A +13,798 – 163,737 Form 4
2026-06-08 Spillane Robert FDirector Grant or award A +13,798 – 57,715 Form 4
2026-06-08 Yu DianeDirector Grant or award A +13,798 – 81,279 Form 4
2026-06-08 Caine PaulDirector Grant or award A +13,798 – 167,401 Form 4
2026-05-15 Barrett Michael G.Director, CEO Shares withheld for tax F −10,404 12.82 403,074 Form 4
2026-05-15 Day DavidCHIEF FINANCIAL OFFICER Shares withheld for tax F −14,170 12.82 493,289 Form 4
2026-05-15 Evans Katie SeitzPresident, Operations Shares withheld for tax F −11,204 12.82 496,840 Form 4
2026-05-15 Gephart BrianCHIEF ACCOUNTING OFFICER Shares withheld for tax F −3,789 12.82 118,596 Form 4
2026-05-15 Saltz AaronCHIEF LEGAL OFFICER Shares withheld for tax F −5,627 12.82 270,016 Form 4
2026-05-15 Buckley Sean PatrickPresident, Revenue Shares withheld for tax F −12,019 12.82 392,747 Form 4
2026-05-15 Buonasera DavidCHIEF TECHNOLOGY OFFICER Shares withheld for tax F −8,335 12.82 294,193 Form 4
2026-02-15 Barrett Michael G.Director, CEO Shares withheld for tax F −23,549 11.70 412,162 Form 4
2026-02-15 Day DavidCHIEF FINANCIAL OFFICER Shares withheld for tax F −30,617 11.70 507,459 Form 4
2026-02-15 Evans Katie SeitzPresident, Operations Shares withheld for tax F −27,428 11.70 508,044 Form 4
2026-02-15 Soroca Adam LeeCHIEF PRODUCT OFFICER Shares withheld for tax F −18,933 11.70 409,954 Form 4
2026-02-15 Gephart BrianCHIEF ACCOUNTING OFFICER Shares withheld for tax F −6,149 11.70 122,385 Form 4
2026-02-15 Saltz AaronCHIEF LEGAL OFFICER Shares withheld for tax F −12,761 11.70 275,643 Form 4
2026-02-15 Buckley Sean PatrickPresident, Revenue Shares withheld for tax F −26,942 11.70 402,999 Form 4
2026-02-15 Buonasera DavidCHIEF TECHNOLOGY OFFICER Shares withheld for tax F −17,137 11.70 302,095 Form 4
2026-01-09 Barrett Michael G.Director, CEO Option exercise M +213,750 – 545,453 Form 4
2026-01-09 Barrett Michael G.Director, CEO Shares withheld for tax F −109,742 16.17 435,711 Form 4
2026-01-09 Day DavidCHIEF FINANCIAL OFFICER Option exercise M +72,675 – 573,245 Form 4
2026-01-09 Day DavidCHIEF FINANCIAL OFFICER Shares withheld for tax F −35,169 16.17 538,076 Form 4
2026-01-09 Evans Katie SeitzPresident, Operations Option exercise M +51,300 – 562,308 Form 4
2026-01-09 Evans Katie SeitzPresident, Operations Shares withheld for tax F −26,836 16.17 535,472 Form 4
2026-01-09 Soroca Adam LeeCHIEF PRODUCT OFFICER Option exercise M +51,300 – 454,217 Form 4
2026-01-09 Soroca Adam LeeCHIEF PRODUCT OFFICER Shares withheld for tax F −25,330 16.17 428,887 Form 4
2026-01-09 Saltz AaronCHIEF LEGAL OFFICER Option exercise M +28,215 – 303,430 Form 4
2026-01-09 Saltz AaronCHIEF LEGAL OFFICER Shares withheld for tax F −15,026 16.17 288,404 Form 4
2026-01-09 Buckley Sean PatrickPresident, Revenue Option exercise M +64,125 – 460,310 Form 4
2026-01-09 Buckley Sean PatrickPresident, Revenue Shares withheld for tax F −30,369 16.17 429,941 Form 4
2026-01-09 Buonasera DavidCHIEF TECHNOLOGY OFFICER Option exercise M +22,935 – 331,562 Form 4
2026-01-09 Buonasera DavidCHIEF TECHNOLOGY OFFICER Shares withheld for tax F −12,330 16.17 319,232 Form 4
2026-01-01 Barrett Michael G.Director, CEO Grant or award A +94,044 – 331,703 Form 4
2026-01-01 Day DavidCHIEF FINANCIAL OFFICER Grant or award A +131,661 – 500,570 Form 4
2026-01-01 Evans Katie SeitzPresident, Operations Grant or award A +127,273 – 511,008 Form 4
2026-01-01 Soroca Adam LeeCHIEF PRODUCT OFFICER Grant or award A +76,803 – 402,917 Form 4
2026-01-01 Gephart BrianCHIEF ACCOUNTING OFFICER Grant or award A +39,185 – 128,534 Form 4
2026-01-01 Saltz AaronCHIEF LEGAL OFFICER Grant or award A +65,831 – 275,215 Form 4
2026-01-01 Buckley Sean PatrickPresident, Revenue Grant or award A +127,273 – 396,185 Form 4
2026-01-01 Buonasera DavidCHIEF TECHNOLOGY OFFICER Grant or award A +76,803 – 308,627 Form 4
2025-12-17 Soroca Adam LeeCHIEF PRODUCT OFFICER Option exercise M +16,656 4.92 342,770 Form 4
2025-11-15 Barrett Michael G.Director, CEO Shares withheld for tax F −12,198 14.15 237,659 Form 4
2025-11-15 Day DavidCHIEF FINANCIAL OFFICER Shares withheld for tax F −13,197 14.15 368,909 Form 4
2025-11-15 Evans Katie SeitzPresident, Operations Shares withheld for tax F −10,354 14.15 383,735 Form 4
2025-11-15 Soroca Adam LeeCHIEF PRODUCT OFFICER Shares withheld for tax F −9,422 14.15 336,971 Form 4
2025-11-15 Gephart BrianCHIEF ACCOUNTING OFFICER Shares withheld for tax F −3,549 14.15 89,349 Form 4
2025-11-15 Saltz AaronCHIEF LEGAL OFFICER Shares withheld for tax F −5,695 14.15 209,384 Form 4
2025-11-15 Buckley Sean PatrickPresident, Revenue Shares withheld for tax F −11,642 14.15 275,551 Form 4
2025-11-15 Buonasera DavidCHIEF TECHNOLOGY OFFICER Shares withheld for tax F −7,129 14.15 231,824 Form 4
2025-09-02 Soroca Adam LeeCHIEF PRODUCT OFFICER Option exercise M +24,986 4.92 371,379 Form 4
2025-08-15 Day DavidCHIEF FINANCIAL OFFICER Gift G −26,374 – 395,472 Form 4
2025-07-03 Soroca Adam LeeCHIEF PRODUCT OFFICER Option exercise M +2 1.97 400,929 Form 4
2025-07-03 Soroca Adam LeeCHIEF PRODUCT OFFICER Option exercise M +8,327 4.92 409,256 Form 4
2025-06-30 Evans Katie SeitzPresident, Operations Option exercise M +16,137 3.61 458,925 Form 4
2025-06-26 Day DavidCHIEF FINANCIAL OFFICER Option exercise M +36,000 5.28 479,528 Form 4
2025-06-24 Day DavidCHIEF FINANCIAL OFFICER Option exercise M +35,000 5.28 478,528 Form 4
2025-06-24 Soroca Adam LeeCHIEF PRODUCT OFFICER Option exercise M +8,329 1.97 445,446 Form 4
2025-06-18 Day DavidCHIEF FINANCIAL OFFICER Option exercise M +38,146 4.92 481,674 Form 4
2025-06-16 Evans Katie SeitzPresident, Operations Option exercise M +20,000 3.61 462,788 Form 4
2025-06-06 Soroca Adam LeeCHIEF PRODUCT OFFICER Option exercise M +8,328 1.97 445,445 Form 4
2025-06-05 Spillane Robert FDirector Grant or award A +10,766 – 81,417 Form 4
2025-06-05 Harden Sarah PatriciaDirector Grant or award A +10,766 – 149,939 Form 4
2025-06-05 Knopper Douglas SDirector Grant or award A +10,766 – 160,115 Form 4
2025-06-05 Lam RachelDirector Grant or award A +10,766 – 241,822 Form 4
2025-06-05 Rossman JamesDirector Grant or award A +10,766 – 230,686 Form 4
2025-06-05 Caine PaulDirector Grant or award A +10,766 – 193,603 Form 4
2025-06-05 Pearson David T.Director Grant or award A +10,766 – 87,481 Form 4
2025-06-05 Yu DianeDirector Grant or award A +10,766 – 87,481 Form 4
2025-06-05 Evans Katie SeitzPresident, Operations Option exercise M +20,000 3.61 477,788 Form 4
2025-05-20 Soroca Adam LeeCHIEF PRODUCT OFFICER Option exercise M +8,328 1.97 445,445 Form 4
2025-05-15 Saltz AaronCHIEF LEGAL OFFICER Shares withheld for tax F −6,001 15.88 311,504 Form 4
2025-05-15 Barrett Michael G.Director, CEO Shares withheld for tax F −13,086 15.88 731,708 Form 4
2025-05-15 Buckley Sean PatrickPresident, Revenue Shares withheld for tax F −15,049 15.88 357,086 Form 4
2025-05-15 Day DavidCHIEF FINANCIAL OFFICER Shares withheld for tax F −13,865 15.88 443,528 Form 4
2025-05-15 Evans Katie SeitzPresident, Operations Shares withheld for tax F −10,860 15.88 457,788 Form 4
2025-05-15 Gephart BrianCHIEF ACCOUNTING OFFICER Shares withheld for tax F −3,045 15.88 123,530 Form 4
2025-05-15 Soroca Adam LeeCHIEF PRODUCT OFFICER Shares withheld for tax F −9,903 15.88 448,483 Form 4
2025-05-15 Buonasera DavidCHIEF TECHNOLOGY OFFICER Shares withheld for tax F −8,038 15.88 271,097 Form 4
2025-02-15 Soroca Adam LeeCHIEF PRODUCT OFFICER Shares withheld for tax F −21,975 20.00 473,885 Form 4
2025-02-15 Barrett Michael G.Director, CEO Shares withheld for tax F −26,499 20.00 743,217 Form 4
2025-02-15 Day DavidCHIEF FINANCIAL OFFICER Shares withheld for tax F −31,113 20.00 457,393 Form 4
2025-02-15 Evans Katie SeitzPresident, Operations Shares withheld for tax F −23,481 20.00 468,648 Form 4
2025-02-15 Saltz AaronCHIEF LEGAL OFFICER Shares withheld for tax F −13,125 20.00 317,505 Form 4
2025-02-15 Gephart BrianCHIEF ACCOUNTING OFFICER Shares withheld for tax F −6,749 20.00 139,159 Form 4
2025-02-15 Buckley Sean PatrickPresident, Revenue Shares withheld for tax F −27,444 20.00 381,085 Form 4
2025-02-15 Buonasera DavidCHIEF TECHNOLOGY OFFICER Shares withheld for tax F −17,384 20.00 278,795 Form 4
2025-02-07 Day DavidCHIEF FINANCIAL OFFICER Option exercise M +39,000 4.92 527,506 Form 4
2025-02-05 Barrett Michael G.Director, CEO Option exercise M +108,360 – 825,391 Form 4
2025-02-05 Barrett Michael G.Director, CEO Shares withheld for tax F −55,675 17.97 769,716 Form 4
2025-01-09 Buckley Sean PatrickPresident, Revenue Grant or award A +123,479 – 427,222 Form 4
2025-01-09 Soroca Adam LeeCHIEF PRODUCT OFFICER Grant or award A +74,513 – 495,860 Form 4
2025-01-09 Evans Katie SeitzPresident, Operations Grant or award A +123,479 – 504,649 Form 4
2025-01-09 Buonasera DavidCHIEF TECHNOLOGY OFFICER Grant or award A +72,384 – 296,179 Form 4
2025-01-09 Saltz AaronCHIEF LEGAL OFFICER Grant or award A +51,095 – 348,577 Form 4
2025-01-09 Day DavidCHIEF FINANCIAL OFFICER Grant or award A +127,737 – 501,751 Form 4
2025-01-09 Barrett Michael G.Director, CEO Grant or award A +82,117 – 717,031 Form 4
2025-01-02 Gephart BrianCHIEF ACCOUNTING OFFICER Grant or award A +33,113 – 145,908 Form 4
2024-11-22 Soroca Adam LeeCHIEF PRODUCT OFFICER Option exercise M +8,328 1.97 429,675 Form 4
2024-11-15 Barrett Michael G.Director, CEO Shares withheld for tax F −9,638 15.85 909,914 Form 4
2024-11-15 Buonasera DavidCHIEF TECHNOLOGY OFFICER Shares withheld for tax F −5,056 15.85 235,691 Form 4
2024-11-15 Buckley Sean PatrickCHIEF REVENUE OFFICER Shares withheld for tax F −10,133 15.85 313,744 Form 4
2024-11-15 Soroca Adam LeeCHIEF PRODUCT OFFICER Shares withheld for tax F −6,805 15.85 429,196 Form 4
2024-11-15 Gephart BrianCHIEF ACCOUNTING OFFICER Shares withheld for tax F −2,031 15.85 114,951 Form 4
2024-11-15 Evans Katie SeitzCHIEF OPERATING OFFICER Shares withheld for tax F −7,483 15.85 381,170 Form 4
2024-11-15 Saltz AaronCHIEF LEGAL OFFICER Shares withheld for tax F −4,153 15.85 303,592 Form 4
2024-11-15 Day DavidCHIEF FINANCIAL OFFICER Shares withheld for tax F −9,128 15.85 412,503 Form 4

How to read it

Buy, sale
Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
Plan
A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
Holds after
The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
Value
Shares times the price the form reports, which is often an average over several fills on the day.

Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.

Magnite's scores and multiples ›