Robert F Spillane

Insider

First SEC filing: June 10, 2026 · Latest: June 10, 2026

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Insider at Companies where this person is a reporting insider.
Insider transactions Every share this person bought or sold, from Form 4 filings.
Derivatives Options and other derivative holdings reported by this person.
Initial holdings The stakes this person held when they first started reporting.

Insider at

MGNI selling Nov. 20, 2024

Insider transactions

0 buys (P) 0 sells (S) Net: $0 + 17 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

17 other filings hidden

Date	Ticker	Code	Shares	Price	Value	Owned after	Δ own	A/D	vs now
June 8, 2026	MGNI	A	13,798	—	—	57,715 Direct	+31.42%	Acquired	(price as of 2026-08-20)
Nov. 20, 2024	MGNI	S	12,500	$16.12	$201,500	70,651 Direct	-15.03%	Disposed	45.8% (price as of 2026-08-20)
June 12, 2024	MGNI	A	14,061	—	—	83,151 Direct	+20.35%	Acquired	(price as of 2026-08-20)
June 11, 2024	MGNI	S	25,000	$13.04	$326,000	69,090 Direct	-26.57%	Disposed	80.3% (price as of 2026-08-20)
Aug. 22, 2023	MGNI	S	25,000	$8.05	$201,250	94,090 Direct	-20.99%	Disposed	192.0% (price as of 2026-08-20)
June 14, 2023	MGNI	A	13,743	—	—	119,090 Direct	+13.05%	Acquired	(price as of 2026-08-20)
June 7, 2022	MGNI	A	16,489	—	—	105,347 Direct	+18.56%	Acquired	(price as of 2026-08-20)
June 28, 2021	MGNI	A	3,936	—	—	88,858 Direct	+4.63%	Acquired	(price as of 2026-08-20)
May 13, 2015	MGNI	A	11,759	—	—	11,759 Direct	—	Acquired	(price as of 2026-08-20)
May 13, 2015	MGNI	A	4,886	—	—	26,169 Direct	+22.96%	Acquired	(price as of 2026-08-20)
April 7, 2014	MGNI	J	13,208	—	—	13,208 Direct	—	Acquired	(price as of 2026-08-20)
April 7, 2014	MGNI	J	13,208	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 7, 2014	MGNI	J	29,184	—	—	29,184 Direct	—	Acquired	(price as of 2026-08-20)
April 7, 2014	MGNI	J	29,184	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 7, 2014	MGNI	J	21,283	—	—	21,283 Direct	—	Acquired	(price as of 2026-08-20)
April 7, 2014	MGNI	J	21,283	—	—	0 Direct	-100.00%	Disposed	(price as of 2026-08-20)
April 1, 2014	MGNI	A	13,208	—	—	13,208 Direct	—	Acquired	(price as of 2026-08-20)
April 1, 2014	MGNI	A	29,184	—	—	29,184 Direct	—	Acquired	(price as of 2026-08-20)
April 1, 2014	MGNI	A	6,283	—	—	21,283 Direct	+41.89%	Acquired	(price as of 2026-08-20)
April 1, 2014	MGNI	A	15,000	—	—	15,000 Direct	—	Acquired	(price as of 2026-08-20)

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.

Date	Ticker	Security	Underlying	Exercise price	Expiration	Shares	A/D
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

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

Date	Ticker	Security	Shares	Ownership
April 11, 2014	MGNI	Common Stock	0	Direct