Follow the people · Insider
Katie Seitz Evans
Katie Seitz Evans files insider transactions with the SEC as an officer of Magnite (MGNI). We hold 1 disclosed purchase or sale filed since 15 May 2017, 1 of them in the last 90 days.
- Files forMGNI
- Disclosed buys and sells1 in all, 1 in the last 90 days
- Last disclosure18 August 2026
Positions held
3 posts we hold — a term names its own dates; a run of filings only says when they filed- Filed 25 January 2021 — 15 August 2026Officer · Magnite (MGNI)90 Form 4 lines · source: SEC Form 4
- Filed 4 December 2017 — 1 April 2020Chief Operating Officer · Telaria (TLRA)58 Form 4 lines · source: SEC Form 4
- Filed 29 April 2017 — 29 August 2017Chief Operating Officer · Tremor Video (TRMR)6 Form 4 lines · source: SEC Form 4
Everything they disclosed
120 entries, newest first — one per disclosure report, one per Form 4 line- had shares withheld for tax on 11,204 shares of MagniteSEC Form 418 August 2026Common Stock · traded 15 August 2026 · filed 18 August 2026
- exercised options over 20,000 shares of MagniteSEC Form 47 August 2026Common Stock · traded 6 August 2026 · filed 7 August 2026
- ▼ sold on the open market 20,000 shares of MagniteSEC Form 47 August 2026Common Stock · traded 6 August 2026 · filed 7 August 2026
- exercised options over 20,000 shares of Magnite (a derivative holding)SEC Form 47 August 2026Employee Stock Option (Right to Buy) · traded 6 August 2026 · filed 7 August 2026
- had shares withheld for tax on 11,204 shares of MagniteSEC Form 419 May 2026Common Stock · traded 15 May 2026 · filed 19 May 2026
- had shares withheld for tax on 27,428 shares of MagniteSEC Form 418 February 2026Common Stock · traded 15 February 2026 · filed 18 February 2026
- had shares withheld for tax on 27,428 shares of MagniteSEC Form 418 February 2026Common Stock · traded 15 February 2026 · filed 18 February 2026
- exercised options over 51,300 shares of MagniteSEC Form 412 January 2026Common Stock · traded 9 January 2026 · filed 12 January 2026
- had shares withheld for tax on 26,836 shares of MagniteSEC Form 412 January 2026Common Stock · traded 9 January 2026 · filed 12 January 2026
- exercised options over 51,300 shares of Magnite (a derivative holding)SEC Form 412 January 2026Performance Stock Units · traded 9 January 2026 · filed 12 January 2026
- exercised options over 51,300 shares of Magnite (a derivative holding)SEC Form 412 January 2026Performance Stock Units · traded 9 January 2026 · filed 12 January 2026
- exercised options over 51,300 shares of MagniteSEC Form 412 January 2026Common Stock · traded 9 January 2026 · filed 12 January 2026
- had shares withheld for tax on 26,836 shares of MagniteSEC Form 412 January 2026Common Stock · traded 9 January 2026 · filed 12 January 2026
- was granted 127,273 shares of MagniteSEC Form 45 January 2026Common Stock · traded 1 January 2026 · filed 5 January 2026
- was granted 42,757 shares of Magnite (a derivative holding)SEC Form 45 January 2026Performance Stock Units · traded 1 January 2026 · filed 5 January 2026
- was granted 42,757 shares of Magnite (a derivative holding)SEC Form 45 January 2026Performance Stock Units · traded 1 January 2026 · filed 5 January 2026
- was granted 127,273 shares of MagniteSEC Form 45 January 2026Common Stock · traded 1 January 2026 · filed 5 January 2026
- had shares withheld for tax on 10,354 shares of MagniteSEC Form 418 November 2025Common Stock · traded 15 November 2025 · filed 18 November 2025
- ▼ sold on the open market 21,509 shares of MagniteSEC Form 429 August 2025Common Stock · traded 27 August 2025 · filed 29 August 2025
- ▼ sold on the open market 8,345 shares of MagniteSEC Form 426 August 2025Common Stock · traded 25 August 2025 · filed 26 August 2025
- ▼ sold on the open market 10,487 shares of MagniteSEC Form 420 August 2025Common Stock · traded 18 August 2025 · filed 20 August 2025
- exercised options over 16,137 shares of Magnite (a derivative holding)SEC Form 42 July 2025Stock Option (Right to Buy) · traded 30 June 2025 · filed 2 July 2025
- exercised options over 16,137 shares of MagniteSEC Form 42 July 2025Common Stock · traded 30 June 2025 · filed 2 July 2025
- ▼ sold on the open market 8,358 shares of MagniteSEC Form 42 July 2025Common Stock · traded 30 June 2025 · filed 2 July 2025
- ▼ sold on the open market 16,137 shares of MagniteSEC Form 42 July 2025Common Stock · traded 30 June 2025 · filed 2 July 2025
- exercised options over 20,000 shares of Magnite (a derivative holding)SEC Form 418 June 2025Stock Option (Right to Buy) · traded 16 June 2025 · filed 18 June 2025
- exercised options over 20,000 shares of MagniteSEC Form 418 June 2025Common Stock · traded 16 June 2025 · filed 18 June 2025
- ▼ sold on the open market 20,000 shares of MagniteSEC Form 418 June 2025Common Stock · traded 16 June 2025 · filed 18 June 2025
- exercised options over 20,000 shares of Magnite (a derivative holding)SEC Form 46 June 2025Stock Option (Right to Buy) · traded 5 June 2025 · filed 6 June 2025
- exercised options over 20,000 shares of MagniteSEC Form 46 June 2025Common Stock · traded 5 June 2025 · filed 6 June 2025
- ▼ sold on the open market 35,000 shares of MagniteSEC Form 46 June 2025Common Stock · traded 5 June 2025 · filed 6 June 2025
- had shares withheld for tax on 10,860 shares of MagniteSEC Form 416 May 2025Common Stock · traded 15 May 2025 · filed 16 May 2025
- had shares withheld for tax on 23,481 shares of MagniteSEC Form 419 February 2025Common Stock · traded 15 February 2025 · filed 19 February 2025
- ▼ sold on the open market 12,520 shares of MagniteSEC Form 47 February 2025Common Stock · traded 7 February 2025 · filed 7 February 2025
- was granted 41,566 shares of Magnite (a derivative holding)SEC Form 413 January 2025Performance Stock Units · traded 9 January 2025 · filed 13 January 2025
- was granted 123,479 shares of MagniteSEC Form 413 January 2025Common Stock · traded 9 January 2025 · filed 13 January 2025
- had shares withheld for tax on 7,483 shares of MagniteSEC Form 419 November 2024Common Stock · traded 15 November 2024 · filed 19 November 2024
- ▼ sold on the open market 12,824 shares of MagniteSEC Form 413 November 2024Common Stock · traded 11 November 2024 · filed 13 November 2024
- had shares withheld for tax on 7,483 shares of MagniteSEC Form 416 August 2024Common Stock · traded 15 August 2024 · filed 16 August 2024
- ▼ sold on the open market 14,541 shares of MagniteSEC Form 414 June 2024Common Stock · traded 13 June 2024 · filed 14 June 2024
- had shares withheld for tax on 9,448 shares of MagniteSEC Form 417 May 2024Common Stock · traded 15 May 2024 · filed 17 May 2024
- had shares withheld for tax on 23,105 shares of MagniteSEC Form 416 February 2024Common Stock · traded 15 February 2024 · filed 16 February 2024
- was granted 40,602 shares of Magnite (a derivative holding)SEC Form 44 January 2024Performance Stock Units · traded 2 January 2024 · filed 4 January 2024
- was granted 113,821 shares of MagniteSEC Form 44 January 2024Common Stock · traded 2 January 2024 · filed 4 January 2024
- had shares withheld for tax on 6,800 shares of MagniteSEC Form 417 November 2023Common Stock · traded 15 November 2023 · filed 17 November 2023
- ▼ sold on the open market 7,038 shares of MagniteSEC Form 418 August 2023Common Stock · traded 16 August 2023 · filed 18 August 2023
- ▼ sold on the open market 17,774 shares of MagniteSEC Form 413 July 2023Common Stock · traded 11 July 2023 · filed 13 July 2023
- ▼ sold on the open market 11,098 shares of MagniteSEC Form 414 June 2023Common Stock · traded 12 June 2023 · filed 14 June 2023
- ▼ sold on the open market 7,450 shares of MagniteSEC Form 418 May 2023Common Stock · traded 16 May 2023 · filed 18 May 2023
- ▼ sold on the open market 78,155 shares of MagniteSEC Form 43 March 2023Common Stock · traded 1 March 2023 · filed 3 March 2023
- had shares withheld for tax on 16,067 shares of MagniteSEC Form 417 February 2023Common Stock · traded 15 February 2023 · filed 17 February 2023
- had shares withheld for tax on 6,819 shares of MagniteSEC Form 416 February 2023Common Stock · traded 14 February 2023 · filed 16 February 2023
- was granted 40,602 shares of Magnite (a derivative holding)SEC Form 44 January 2023Performance Stock Units · traded 1 January 2023 · filed 4 January 2023
- was granted 113,821 shares of MagniteSEC Form 44 January 2023Common Stock · traded 1 January 2023 · filed 4 January 2023
- had shares withheld for tax on 3,710 shares of MagniteSEC Form 417 November 2022Common Stock · traded 15 November 2022 · filed 17 November 2022
- had shares withheld for tax on 3,710 shares of MagniteSEC Form 417 August 2022Common Stock · traded 15 August 2022 · filed 17 August 2022
- had shares withheld for tax on 6,243 shares of MagniteSEC Form 417 May 2022Common Stock · traded 15 May 2022 · filed 17 May 2022
- ▼ sold on the open market 15,805 shares of MagniteSEC Form 48 April 2022Common Stock · traded 6 April 2022 · filed 8 April 2022
- had shares withheld for tax on 26,205 shares of MagniteSEC Form 45 April 2022Common Stock · traded 1 April 2022 · filed 5 April 2022
- had shares withheld for tax on 10,259 shares of MagniteSEC Form 416 February 2022Common Stock · traded 14 February 2022 · filed 16 February 2022
- had shares withheld for tax on 2,949 shares of MagniteSEC Form 416 February 2022Common Stock · traded 15 February 2022 · filed 16 February 2022
- was granted 68,886 shares of Magnite (a derivative holding)SEC Form 43 February 2022Employee Stock Option (right to buy) · traded 1 February 2022 · filed 3 February 2022
- was granted 96,819 shares of MagniteSEC Form 43 February 2022Common Stock · traded 1 February 2022 · filed 3 February 2022
- had shares withheld for tax on 3,069 shares of MagniteSEC Form 417 November 2021Common Stock · traded 15 November 2021 · filed 17 November 2021
- ▼ sold on the open market 28,584 shares of MagniteSEC Form 415 September 2021Common Stock · traded 13 September 2021 · filed 15 September 2021
- ▼ sold on the open market 870 shares of MagniteSEC Form 415 September 2021Common Stock · traded 13 September 2021 · filed 15 September 2021
- ▼ sold on the open market 2,476 shares of MagniteSEC Form 415 September 2021Common Stock · traded 13 September 2021 · filed 15 September 2021
- ▼ sold on the open market 32,260 shares of MagniteSEC Form 415 September 2021Common Stock · traded 14 September 2021 · filed 15 September 2021
- ▼ sold on the open market 3,329 shares of MagniteSEC Form 418 August 2021Common Stock · traded 16 August 2021 · filed 18 August 2021
- exercised options over 1,442 shares of Magnite (a derivative holding)SEC Form 428 May 2021Stock Option (Right to Buy) · traded 26 May 2021 · filed 28 May 2021
- exercised options over 2,884 shares of Magnite (a derivative holding)SEC Form 428 May 2021Stock Option (Right to Buy) · traded 26 May 2021 · filed 28 May 2021
- exercised options over 2,884 shares of Magnite (a derivative holding)SEC Form 428 May 2021Stock Option (Right to Buy) · traded 26 May 2021 · filed 28 May 2021
- exercised options over 7,212 shares of Magnite (a derivative holding)SEC Form 428 May 2021Stock Option (Right to Buy) · traded 26 May 2021 · filed 28 May 2021
- exercised options over 5,410 shares of Magnite (a derivative holding)SEC Form 428 May 2021Stock Option (Right to Buy) · traded 26 May 2021 · filed 28 May 2021
- exercised options over 22,971 shares of Magnite (a derivative holding)SEC Form 428 May 2021Stock Option (Right to Buy) · traded 26 May 2021 · filed 28 May 2021
- exercised options over 1,442 shares of MagniteSEC Form 428 May 2021Common Stock · traded 26 May 2021 · filed 28 May 2021
- exercised options over 2,884 shares of MagniteSEC Form 428 May 2021Common Stock · traded 26 May 2021 · filed 28 May 2021
- exercised options over 2,884 shares of MagniteSEC Form 428 May 2021Common Stock · traded 26 May 2021 · filed 28 May 2021
- exercised options over 7,212 shares of MagniteSEC Form 428 May 2021Common Stock · traded 26 May 2021 · filed 28 May 2021
- exercised options over 5,410 shares of MagniteSEC Form 428 May 2021Common Stock · traded 26 May 2021 · filed 28 May 2021
- exercised options over 22,971 shares of MagniteSEC Form 428 May 2021Common Stock · traded 26 May 2021 · filed 28 May 2021
- ▼ sold on the open market 12,438 shares of MagniteSEC Form 419 May 2021Common Stock · traded 17 May 2021 · filed 19 May 2021
- ▼ sold on the open market 27,896 shares of MagniteSEC Form 47 April 2021Common Stock · traded 5 April 2021 · filed 7 April 2021
- was granted 23,820 shares of MagniteSEC Form 45 April 2021Common Stock · traded 1 April 2021 · filed 5 April 2021
- ▼ sold on the open market 40,238 shares of MagniteSEC Form 45 April 2021Common Stock · traded 1 April 2021 · filed 5 April 2021
- ▼ sold on the open market 55,363 shares of MagniteSEC Form 45 April 2021Common Stock · traded 1 April 2021 · filed 5 April 2021
- was granted 17,726 shares of Magnite (a derivative holding)SEC Form 45 April 2021Employee Stock Option (right to buy) · traded 1 April 2021 · filed 5 April 2021
- ▼ sold on the open market 30,138 shares of MagniteSEC Form 418 February 2021Common Stock · traded 16 February 2021 · filed 18 February 2021
- exercised options over 1,442 shares of MagniteSEC Form 427 January 2021Common Stock · traded 25 January 2021 · filed 27 January 2021
- exercised options over 1,442 shares of Magnite (a derivative holding)SEC Form 427 January 2021Employee Stock Option (Right to Buy) · traded 25 January 2021 · filed 27 January 2021
- returned to the issuer 488 shares of Telaria (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 1,333 shares of Telaria (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 1,333 shares of Telaria (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 2,666 shares of Telaria (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 2,666 shares of Telaria (a derivative holding)SEC Form 43 April 2020Stock Opton (Right to Buy) · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 6,666 shares of Telaria (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 5,000 shares of Telaria (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 21,231 shares of Telaria (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 51,883 shares of Telaria (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 31,004 shares of Telaria (a derivative holding)SEC Form 43 April 2020Stock Option (Right to Buy) · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 12,500 shares of Telaria (a derivative holding)SEC Form 43 April 2020Restricted Stock Unit · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 31,250 shares of Telaria (a derivative holding)SEC Form 43 April 2020Restricted Stock Unit · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 12,820 shares of Telaria (a derivative holding)SEC Form 43 April 2020Restricted Stock Unit · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 34,722 shares of Telaria (a derivative holding)SEC Form 43 April 2020Restricted Stock Unit · traded 1 April 2020 · filed 3 April 2020
- returned to the issuer 215,407 shares of TelariaSEC Form 43 April 2020Common Stock · traded 1 April 2020 · filed 3 April 2020
- exercised options over 7,500 shares of Telaria (a derivative holding)SEC Form 419 February 2020Restricted Stock Unit · traded 14 February 2020 · filed 19 February 2020
- exercised options over 31,250 shares of Telaria (a derivative holding)SEC Form 419 February 2020Restricted Stock Unit · traded 14 February 2020 · filed 19 February 2020
- exercised options over 6,410 shares of Telaria (a derivative holding)SEC Form 419 February 2020Restricted Stock Unit · traded 14 February 2020 · filed 19 February 2020
- exercised options over 11,574 shares of Telaria (a derivative holding)SEC Form 419 February 2020Restricted Stock Unit · traded 14 February 2020 · filed 19 February 2020
- exercised options over 56,734 shares of TelariaSEC Form 419 February 2020Common Stock · traded 14 February 2020 · filed 19 February 2020
- had shares withheld for tax on 27,791 shares of TelariaSEC Form 419 February 2020Common Stock · traded 14 February 2020 · filed 19 February 2020
- exercised options over 25,000 shares of Telaria (a derivative holding)SEC Form 44 December 2019Restricted Stock Unit · traded 3 December 2019 · filed 4 December 2019
- exercised options over 25,000 shares of TelariaSEC Form 44 December 2019Common Stock · traded 3 December 2019 · filed 4 December 2019
- had shares withheld for tax on 8,493 shares of TelariaSEC Form 44 December 2019Common Stock · traded 3 December 2019 · filed 4 December 2019
- ▼ sold on the open market 7,879 shares of TelariaSEC Form 431 May 2019Common Stock · traded 30 May 2019 · filed 31 May 2019
- exercised options over 12,500 shares of Telaria (a derivative holding)SEC Form 43 May 2019Restricted Stock Unit · traded 29 April 2019 · filed 3 May 2019
- exercised options over 12,500 shares of TelariaSEC Form 43 May 2019Common Stock · traded 29 April 2019 · filed 3 May 2019
- had shares withheld for tax on 6,131 shares of TelariaSEC Form 43 May 2019Common Stock · traded 29 April 2019 · filed 3 May 2019
- was granted 46,296 shares of Telaria (a derivative holding)SEC Form 44 March 2019Restricted Stock Unit · traded 28 February 2019 · filed 4 March 2019
- was granted 31,004 shares of Telaria (a derivative holding)SEC Form 44 March 2019Employee Stock Option (Right to Buy) · traded 28 February 2019 · filed 4 March 2019
Positions come from the unitedstates/congress-legislators roster, the Office of Government Ethics and the SEC’s Form 4 index. Every disclosed line names its own source and links the document the government published; we print what the filing says and never a price we did not read from it. Headlines and links come from the GDELT Global Knowledge Graph — the story stays with the publisher. The portrait, where we have one, is the public-domain Congressional Bioguide photograph.