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Who

Brian Gephart

Chief Financial Officer

Company insider

Files Form 4 as: Chief Financial Officer, Magnite; Chief Financial Officer, Leaf Group.

In numbers

Trades disclosed
54
Buys
0
Sells
10
Bought
$0
Sold
$1.9M
Companies
2
Companies where not an officer
0
First trade
24 Jul 2019
Last trade
1 Oct 2026
Last filed
2 Oct 2026

Companies traded

Where they are an officer
MGNI MagniteOfficer · IT Services & Consulting · last 1 Oct 20260 buys · 10 sells
Leaf GroupOfficer · last 14 Jun 20210 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
20Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
1 Oct 2026filed 2 Oct 2026MGNI MagniteIT Services & ConsultingSEC FORM 4 Code A—64,682 at $0.00filing
15 Aug 2026filed 18 Aug 2026MGNI MagniteIT Services & ConsultingSEC FORM 4 Code F$94K3,789 at $24.73filing
15 Aug 2026filed 18 Aug 2026MGNI MagniteIT Services & ConsultingSEC FORM 4 Code F$94K3,789 at $24.73filing
10 Aug 2026filed 12 Aug 2026MGNI MagniteIT Services & ConsultingSEC FORM 4 Sold$308K12,479 at $24.68filing
10 Aug 2026filed 12 Aug 2026MGNI MagniteIT Services & ConsultingSEC FORM 4 Sold$308K12,479 at $24.68filing
15 May 2026filed 19 May 2026MGNI MagniteIT Services & ConsultingSEC FORM 4 Code F$49K3,789 at $12.82filing
15 May 2026filed 19 May 2026MGNI MagniteIT Services & ConsultingSEC FORM 4 Code F$49K3,789 at $12.82filing
15 Feb 2026filed 18 Feb 2026MGNI MagniteIT Services & ConsultingSEC FORM 4 Code F$72K6,149 at $11.70filing
15 Feb 2026filed 18 Feb 2026MGNI MagniteIT Services & ConsultingSEC FORM 4 Code F$72K6,149 at $11.70filing
1 Jan 2026filed 5 Jan 2026MGNI MagniteIT Services & ConsultingSEC FORM 4 Code A—39,185 at $0.00filing
1 Jan 2026filed 5 Jan 2026MGNI MagniteIT Services & ConsultingSEC FORM 4 Code A—39,185 at $0.00filing
15 Nov 2025filed 18 Nov 2025MGNI MagniteIT Services & ConsultingSEC FORM 4 Code F$50K3,549 at $14.15filing
4 Sep 2025filed 5 Sep 2025MGNI MagniteIT Services & ConsultingSEC FORM 4 Sold$684K27,671 at $24.71filing
18 Aug 2025filed 20 Aug 2025MGNI MagniteIT Services & ConsultingSEC FORM 4 Sold$71K2,961 at $23.85filing
15 May 2025filed 16 May 2025MGNI MagniteIT Services & ConsultingSEC FORM 4 Code F$48K3,045 at $15.88filing
12 May 2025filed 14 May 2025MGNI MagniteIT Services & ConsultingSEC FORM 4 Sold$102K6,334 at $16.16filing
3 Mar 2025filed 5 Mar 2025MGNI MagniteIT Services & ConsultingSEC FORM 4 Sold$100K6,250 at $16.00filing
15 Feb 2025filed 19 Feb 2025MGNI MagniteIT Services & ConsultingSEC FORM 4 Code F$135K6,749 at $20.00filing
2 Jan 2025filed 6 Jan 2025MGNI MagniteIT Services & ConsultingSEC FORM 4 Code A—33,113 at $0.00filing
18 Nov 2024filed 19 Nov 2024MGNI MagniteIT Services & ConsultingSEC FORM 4 Sold$34K2,156 at $15.60filing

News

No headline names them, or the companies they trade most, lately.

Sectors

Technology10

Buys in green, sells in red, by the company’s sector.

Related people

Paul CaineDirector · Director at Magnite, filing Form 4 there in the last year
Haas SullivanChief Accounting Officer · Chief Accounting Officer at Magnite, filing Form 4 there in the last year
Douglas S. KnopperDirector · Director at Magnite, filing Form 4 there in the last year
Robert F. SpillaneDirector · Director at Magnite, filing Form 4 there in the last year
David BuonaseraChief Technology Officer · Chief Technology Officer at Magnite, filing Form 4 there in the last year
Katie Seitz EvansOfficer · Also traded MGNI in the last 90 days
Aaron SaltzChief Legal Officer · Also traded MGNI in the last 90 days
Sarah Patricia HardenDirector · Also traded MGNI in the last 90 days