SEC Insider Transactions from Evans Katie Seitz.

Last updated: 2026-03-14 11:50 UTC | Total transactions: 43

Evans Katie Seitz, President of Operations at Magnite Inc. ($MGNI), sold shares on the open market seven times in the last year, totaling $2.56 million. Her most recent sale occurred on August 27, 2025. These sales rank her 3,000th among 11,678 insiders in our database by total value sold, below the average of $8.6 million across 6.37 transactions per insider. She made no open market purchases during this period.

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Transaction Date Company Ticker Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
Feb. 15, 2026 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations F Common Stock 27428 $11.70 508,044.0000 153,166,000 5.12% 0.02%
Jan. 9, 2026 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations M Common Stock 51300 $0.00 562,308.0000 153,166,000 10.04% 0.03%
Jan. 9, 2026 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations F Common Stock 26836 $16.17 535,472.0000 153,166,000 4.77% 0.02%
Jan. 9, 2026 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations M Performance Stock Units 51300 $0.00 0.0000 153,166,000 100.00% 0.03%
Jan. 1, 2026 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations A Common Stock 127273 $0.00 511,008.0000 153,166,000 33.17% 0.08%
Jan. 1, 2026 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations A Performance Stock Units 42757 $0.00 42,757.0000 153,166,000 9999.99% 0.03%
Nov. 15, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations F Common Stock 10354 $14.15 383,735.0000 153,166,000 2.63% 0.01%
Aug. 27, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations S Common Stock 21509 $25.52 394,089.0000 146,810,000 5.18% 0.01%
Aug. 25, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations S Common Stock 8345 $26.00 415,598.0000 146,810,000 1.97% 0.01%
Aug. 18, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations S Common Stock 10487 $23.85 423,943.0000 146,810,000 2.41% 0.01%
June 30, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations S Common Stock 16137 $24.00 434,430.0000 146,810,000 3.58% 0.01%
June 30, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations M Stock Option (Right to Buy) 16137 $0.00 0.0000 146,810,000 100.00% 0.01%
June 30, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations M Common Stock 16137 $3.61 458,925.0000 146,810,000 3.64% 0.01%
June 30, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations S Common Stock 8358 $22.00 450,567.0000 146,810,000 1.82% 0.01%
June 16, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations M Common Stock 20000 $3.61 462,788.0000 146,810,000 4.52% 0.01%
June 16, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations S Common Stock 20000 $18.50 442,788.0000 146,810,000 4.32% 0.01%
June 16, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations M Stock Option (Right to Buy) 20000 $0.00 16,137.0000 146,810,000 55.34% 0.01%
June 5, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations M Common Stock 20000 $3.61 477,788.0000 146,810,000 4.37% 0.01%
June 5, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations S Common Stock 35000 $17.36 442,788.0000 146,810,000 7.33% 0.02%
June 5, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations M Stock Option (Right to Buy) 20000 $0.00 36,137.0000 146,810,000 35.63% 0.01%
May 15, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations F Common Stock 10860 $15.88 457,788.0000 146,810,000 2.32% 0.01%
Feb. 15, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations F Common Stock 23481 $20.00 468,648.0000 146,810,000 4.77% 0.02%
Feb. 7, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations S Common Stock 12520 $20.00 492,129.0000 146,810,000 2.48% 0.01%
Jan. 9, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations A Performance Stock Units 41566 $0.00 41,566.0000 146,810,000 9999.99% 0.03%
Jan. 9, 2025 MAGNITE, INC. $MGNI Evans Katie Seitz President, Operations A Common Stock 123479 $0.00 504,649.0000 146,810,000 32.39% 0.08%
Nov. 15, 2024 MAGNITE, INC. $MGNI Evans Katie Seitz CHIEF OPERATING OFFICER F Common Stock 7483 $15.85 381,170.0000 148,697,000 1.93% 0.01%
Nov. 11, 2024 MAGNITE, INC. $MGNI Evans Katie Seitz CHIEF OPERATING OFFICER S Common Stock 12824 $16.00 388,653.0000 148,697,000 3.19% 0.01%
Aug. 15, 2024 MAGNITE, INC. $MGNI Evans Katie Seitz CHIEF OPERATING OFFICER F Common Stock 7483 $12.51 401,477.0000 136,620,000 1.83% 0.01%
June 13, 2024 MAGNITE, INC. $MGNI Evans Katie Seitz CHIEF OPERATING OFFICER S Common Stock 14541 $13.77 408,960.0000 136,620,000 3.43% 0.01%
May 15, 2024 MAGNITE, INC. $MGNI Evans Katie Seitz CHIEF OPERATING OFFICER F Common Stock 9448 $9.80 423,501.0000 136,620,000 2.18% 0.01%
Feb. 15, 2024 MAGNITE, INC. $MGNI Evans Katie Seitz CHIEF OPERATING OFFICER F Common Stock 23105 $9.74 432,949.0000 136,620,000 5.07% 0.02%
Jan. 2, 2024 MAGNITE, INC. $MGNI Evans Katie Seitz Chief Operating Officer A Performance Stock Units 40602 $0.00 40,602.0000 136,620,000 9999.99% 0.03%
Jan. 2, 2024 MAGNITE, INC. $MGNI Evans Katie Seitz Chief Operating Officer A Common Stock 113821 $0.00 456,054.0000 136,620,000 33.26% 0.08%
Nov. 15, 2023 MAGNITE, INC. $MGNI Evans Katie Seitz Chief Operating Officer F Common Stock 6800 $7.89 342,233.0000 132,887,000 1.95% 0.01%
Aug. 16, 2023 MAGNITE, INC. $MGNI Evans Katie Seitz Chief Operating Officer S Common Stock 7038 $8.31 349,033.0000 132,887,000 1.98% 0.01%
July 11, 2023 MAGNITE, INC. $MGNI Evans Katie Seitz Chief Operating Officer S Common Stock 17774 $15.00 356,071.0000 132,887,000 4.75% 0.01%
June 12, 2023 MAGNITE, INC. $MGNI Evans Katie Seitz Chief Operating Officer S Common Stock 11098 $13.43 373,845.0000 132,887,000 2.88% 0.01%
May 16, 2023 MAGNITE, INC. $MGNI Evans Katie Seitz Chief Operating Officer S Common Stock 7450 $10.88 384,943.0000 132,887,000 1.90% 0.01%
March 1, 2023 MAGNITE, INC. $MGNI Evans Katie Seitz Chief Operating Officer S Common Stock 78155 $10.99 392,393.0000 132,887,000 16.61% 0.06%
Feb. 15, 2023 MAGNITE, INC. $MGNI Evans Katie Seitz Chief Operating Officer F Common Stock 16067 $13.27 470,548.0000 132,887,000 3.30% 0.01%
Feb. 14, 2023 MAGNITE, INC. $MGNI Evans Katie Seitz Chief Operating Officer F Common Stock 6819 $11.82 486,615.0000 132,887,000 1.38% 0.01%
Jan. 1, 2023 MAGNITE, INC. $MGNI Evans Katie Seitz Chief Operating Officer A Performance Stock Units 40602 $0.00 40,602.0000 132,887,000 9999.99% 0.03%
Jan. 1, 2023 MAGNITE, INC. $MGNI Evans Katie Seitz Chief Operating Officer A Common Stock 113821 $0.00 493,434.0000 132,887,000 29.98% 0.09%