Insider at

04

Insider transactions

05
0 buys (P) 0 sells (S) Net: $0 + 23 non-open-market transactions below last 12 months, based on the transactions shown below

Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted

No open-market trades on record; showing all filings.

DateTickerCodeSharesPriceValue Owned afterΔ ownA/Dvs now
June 14, 2023 MGNI A 13,743 · · 119,090 Direct +13.05% Acquired (price as of 2026-10-02)
June 7, 2022 MGNI A 16,489 · · 105,347 Direct +18.56% Acquired (price as of 2026-10-02)
June 28, 2021 MGNI A 3,936 · · 88,858 Direct +4.63% Acquired (price as of 2026-10-02)
July 8, 2020 MGNI A 18,436 · · 84,922 Direct +27.73% Acquired (price as of 2026-10-02)
May 15, 2019 MGNI A 19,562 · · 66,486 Direct +41.69% Acquired (price as of 2026-10-02)
Aug. 15, 2018 MGNI A 7,292 · · 46,924 Direct +18.40% Acquired (price as of 2026-10-02)
Aug. 15, 2018 MGNI A 9,429 · · 9,429 Direct · Acquired (price as of 2026-10-02)
May 23, 2017 MGNI A 7,292 · · 39,632 Direct +22.55% Acquired (price as of 2026-10-02)
May 23, 2017 MGNI A 10,363 · · 10,363 Direct · Acquired (price as of 2026-10-02)
May 26, 2016 MGNI A 6,171 · · 32,340 Direct +23.58% Acquired (price as of 2026-10-02)
May 26, 2016 MGNI A 12,557 · · 12,557 Direct · Acquired (price as of 2026-10-02)
May 13, 2015 MGNI A 11,759 · · 11,759 Direct · Acquired (price as of 2026-10-02)
May 13, 2015 MGNI A 4,886 · · 26,169 Direct +22.96% Acquired (price as of 2026-10-02)
April 7, 2014 MGNI J 13,208 · · 13,208 Direct · Acquired (price as of 2026-10-02)
April 7, 2014 MGNI J 13,208 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
April 7, 2014 MGNI J 29,184 · · 29,184 Direct · Acquired (price as of 2026-10-02)
April 7, 2014 MGNI J 29,184 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
April 7, 2014 MGNI J 21,283 · · 21,283 Direct · Acquired (price as of 2026-10-02)
April 7, 2014 MGNI J 21,283 · · 0 Direct -100.00% Disposed (price as of 2026-10-02)
April 1, 2014 MGNI A 13,208 · · 13,208 Direct · Acquired (price as of 2026-10-02)
April 1, 2014 MGNI A 29,184 · · 29,184 Direct · Acquired (price as of 2026-10-02)
April 1, 2014 MGNI A 6,283 · · 21,283 Direct +41.89% Acquired (price as of 2026-10-02)
April 1, 2014 MGNI A 15,000 · · 15,000 Direct · Acquired (price as of 2026-10-02)

P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding

Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.

Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.

06
DateTickerSecurityUnderlying Exercise priceExpirationSharesA/D
Aug. 15, 2018 MGNI Stock Option (right to buy) Common Stock (9,429) $3.81 Aug. 15, 2028 9,429 Acquired
May 23, 2017 MGNI Stock Option (right to buy) Common Stock (10,363) $5.17 May 23, 2027 10,363 Acquired
May 26, 2016 MGNI Stock Option (right to buy) Common Stock (12,557) $14.18 May 26, 2026 12,557 Acquired
May 13, 2015 MGNI Stock Option (right to buy) Common Stock (11,759) $17.91 May 13, 2025 11,759 Acquired
April 7, 2014 MGNI Stock Option (Right to Buy) Common Stock (13,208) $15.00 April 1, 2024 13,208 Acquired
April 7, 2014 MGNI Stock Option (Right to Buy) Class A Common Stock (13,208) $15.00 April 1, 2024 13,208 Disposed
April 7, 2014 MGNI Stock Option (Right to Buy) Common Stock (29,184) $15.00 April 1, 2024 29,184 Acquired
April 7, 2014 MGNI Stock Option (Right to Buy) Class A Common Stock (29,184) $15.00 April 1, 2024 29,184 Disposed
April 1, 2014 MGNI Stock Option (Right to Buy) Class A Common Stock (13,208) $15.00 April 1, 2024 13,208 Acquired
April 1, 2014 MGNI Stock Option (Right to Buy) Class A Common Stock (29,184) $15.00 April 1, 2024 29,184 Acquired

Exercise/conversion price is blank when not applicable (e.g. RSUs).

Initial ownership (Form 3) 1 holding

07

Securities held when first becoming an insider, per SEC Form 3.

DateTickerSecuritySharesOwnership
April 11, 2014 MGNI Common Stock 0 Direct