Buckley Sean Patrick
See Remarks
Sale
Calculated transaction value
$296.76K
10,991 shares @ $27
Traded
Nov 5, 2026
Filed
Nov 6, 2026
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Magnite
MGNI
ServicesBusiness Services
Transactions reported in official disclosures
Price with disclosed trades
Daily closes, past year · marks sit on transaction dates, sized by value
83 trades
| Reporting person | Filed | Transaction | Transaction value | Source | Actions |
|---|---|---|---|---|---|
| Buckley Sean Patrick See Remarks | Nov 6, 2026 1-day lag | Sale Nov 5, 2026 | $296.76K Filed shares x price | SEC Form 4 View filing | |
| Buonasera David Chief Technology Officer | Nov 6, 2026 1-day lag | Sale Nov 5, 2026 | $40.15K Filed shares x price | SEC Form 4 View filing | |
| Buonasera David Chief Technology Officer | Nov 6, 2026 1-day lag | Sale Nov 5, 2026 | $115.34K Filed shares x price | SEC Form 4 View filing | |
| Caine Paul Director | Oct 14, 2026 2-day lag | Sale Oct 12, 2026 | $316.13K Filed shares x price | SEC Form 4 View filing | |
| Sullivan Haas Chief Accounting Officer | Oct 2, 2026 1-day lag | Award Oct 1, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Gephart Brian Chief Financial Officer | Oct 2, 2026 1-day lag | Award Oct 1, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Knopper Douglas S Director | Sep 18, 2026 1-day lag | Sale Sep 17, 2026 | $981.22K Filed shares x price | SEC Form 4 View filing | |
| Caine Paul Director | Sep 18, 2026 1-day lag | Sale Sep 17, 2026 | $198.75K Filed shares x price | SEC Form 4 View filing | |
| Buonasera David Chief Technology Officer | Sep 16, 2026 2-day lag | Sale Sep 14, 2026 | $27.96K Filed shares x price | SEC Form 4 View filing | |
| Spillane Robert F Director | Sep 16, 2026 2-day lag | Exercise Sep 14, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Spillane Robert F Director | Sep 16, 2026 2-day lag | Exercise Sep 14, 2026 | $53.58K Filed shares x price | SEC Form 4 View filing | |
| Spillane Robert F Director | Sep 16, 2026 2-day lag | Sale Sep 14, 2026 | $246.22K Filed shares x price | SEC Form 4 View filing | |
| Evans Katie Seitz See Remarks | Sep 11, 2026 Same-day filing | Sale Sep 11, 2026 | $335.93K Filed shares x price | SEC Form 4 View filing | |
| Saltz Aaron Chief Legal Officer | Sep 11, 2026 1-day lag | Sale Sep 10, 2026 | $936.4K Filed shares x price | SEC Form 4 View filing | |
| Caine Paul Director | Sep 11, 2026 1-day lag | Sale Sep 10, 2026 | $117.65K Filed shares x price | SEC Form 4 View filing | |
| Evans Katie Seitz See Remarks | Sep 10, 2026 1-day lag | Sale Sep 9, 2026 | $260.41K Filed shares x price | SEC Form 4 View filing | |
| Evans Katie Seitz See Remarks | Sep 10, 2026 2-day lag | Sale Sep 8, 2026 | $762.89K Filed shares x price | SEC Form 4 View filing | |
| Evans Katie Seitz See Remarks | Sep 10, 2026 2-day lag | Exercise Sep 8, 2026 | $69.9K Filed shares x price | SEC Form 4 View filing | |
| Evans Katie Seitz See Remarks | Sep 10, 2026 2-day lag | Exercise Sep 8, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Buonasera David Chief Technology Officer | Sep 3, 2026 1-day lag | Sale Sep 2, 2026 | $26.07K Filed shares x price | SEC Form 4 View filing | |
| Buonasera David Chief Technology Officer | Sep 3, 2026 2-day lag | Sale Sep 1, 2026 | $125.79K Filed shares x price | SEC Form 4 View filing | |
| Harden Sarah Patricia Director | Aug 28, 2026 Same-day filing | Sale Aug 28, 2026 | $442.46K Filed shares x price | SEC Form 4 View filing | |
| Harden Sarah Patricia Director | Aug 28, 2026 2-day lag | Sale Aug 26, 2026 | $712.12K Filed shares x price | SEC Form 4 View filing | |
| Buckley Sean Patrick See Remarks | Aug 18, 2026 Same-day filing | Sale Aug 18, 2026 | $68.97K Filed shares x price | SEC Form 4 View filing | |
| Buckley Sean Patrick See Remarks | Aug 18, 2026 1-day lag | Sale Aug 17, 2026 | $201.07K Filed shares x price | SEC Form 4 View filing | |
| Buonasera David Chief Technology Officer | Aug 18, 2026 3-day lag | Disposition Aug 15, 2026 | $200.36K Filed shares x price | SEC Form 4 View filing | |
| Buckley Sean Patrick See Remarks | Aug 18, 2026 3-day lag | Disposition Aug 15, 2026 | $289.71K Filed shares x price | SEC Form 4 View filing | |
| Evans Katie Seitz See Remarks | Aug 18, 2026 3-day lag | Disposition Aug 15, 2026 | $277.07K Filed shares x price | SEC Form 4 View filing | |
| Saltz Aaron Chief Legal Officer | Aug 18, 2026 3-day lag | Disposition Aug 15, 2026 | $139.16K Filed shares x price | SEC Form 4 View filing | |
| Gephart Brian Chief Accounting Officer | Aug 18, 2026 3-day lag | Disposition Aug 15, 2026 | $93.7K Filed shares x price | SEC Form 4 View filing |
Buonasera David
Chief Technology Officer
Sale
Calculated transaction value
$40.15K
1,434 shares @ $28
Traded
Nov 5, 2026
Filed
Nov 6, 2026
Buonasera David
Chief Technology Officer
Sale
Calculated transaction value
$115.34K
4,272 shares @ $27
Traded
Nov 5, 2026
Filed
Nov 6, 2026
Caine Paul
Director
Sale
Calculated transaction value
$316.13K
12,500 shares @ $25.29
Traded
Oct 12, 2026
Filed
Oct 14, 2026
Sullivan Haas
Chief Accounting Officer
Award
Calculated transaction value
$0
24,641 shares @ $0
Traded
Oct 1, 2026
Filed
Oct 2, 2026
Gephart Brian
Chief Financial Officer
Award
Calculated transaction value
$0
64,682 shares @ $0
Traded
Oct 1, 2026
Filed
Oct 2, 2026
Knopper Douglas S
Director
Sale
Calculated transaction value
$981.22K
37,337 shares @ $26.28
Traded
Sep 17, 2026
Filed
Sep 18, 2026
Caine Paul
Director
Sale
Calculated transaction value
$198.75K
7,500 shares @ $26.5
Traded
Sep 17, 2026
Filed
Sep 18, 2026
Buonasera David
Chief Technology Officer
Sale
Calculated transaction value
$27.96K
1,165 shares @ $24
Traded
Sep 14, 2026
Filed
Sep 16, 2026
Spillane Robert F
Director
Exercise
Calculated transaction value
$0
10,363 shares @ $0
Traded
Sep 14, 2026
Filed
Sep 16, 2026
Spillane Robert F
Director
Exercise
Calculated transaction value
$53.58K
10,363 shares @ $5.17
Traded
Sep 14, 2026
Filed
Sep 16, 2026
Spillane Robert F
Director
Sale
Calculated transaction value
$246.22K
10,363 shares @ $23.76
Traded
Sep 14, 2026
Filed
Sep 16, 2026
Evans Katie Seitz
See Remarks
Sale
Calculated transaction value
$335.93K
13,997 shares @ $24
Traded
Sep 11, 2026
Filed
Sep 11, 2026
Saltz Aaron
Chief Legal Officer
Sale
Calculated transaction value
$936.4K
40,000 shares @ $23.41
Traded
Sep 10, 2026
Filed
Sep 11, 2026
Caine Paul
Director
Sale
Calculated transaction value
$117.65K
5,000 shares @ $23.53
Traded
Sep 10, 2026
Filed
Sep 11, 2026
Evans Katie Seitz
See Remarks
Sale
Calculated transaction value
$260.41K
11,100 shares @ $23.46
Traded
Sep 9, 2026
Filed
Sep 10, 2026
Evans Katie Seitz
See Remarks
Sale
Calculated transaction value
$762.89K
32,285 shares @ $23.63
Traded
Sep 8, 2026
Filed
Sep 10, 2026
Evans Katie Seitz
See Remarks
Exercise
Calculated transaction value
$69.9K
13,546 shares @ $5.16
Traded
Sep 8, 2026
Filed
Sep 10, 2026
Evans Katie Seitz
See Remarks
Exercise
Calculated transaction value
$0
13,546 shares @ $0
Traded
Sep 8, 2026
Filed
Sep 10, 2026
Buonasera David
Chief Technology Officer
Sale
Calculated transaction value
$26.07K
1,043 shares @ $25
Traded
Sep 2, 2026
Filed
Sep 3, 2026
Buonasera David
Chief Technology Officer
Sale
Calculated transaction value
$125.79K
5,371 shares @ $23.42
Traded
Sep 1, 2026
Filed
Sep 3, 2026
Harden Sarah Patricia
Director
Sale
Calculated transaction value
$442.46K
18,436 shares @ $24
Traded
Aug 28, 2026
Filed
Aug 28, 2026
Harden Sarah Patricia
Director
Sale
Calculated transaction value
$712.12K
30,550 shares @ $23.31
Traded
Aug 26, 2026
Filed
Aug 28, 2026
Buckley Sean Patrick
See Remarks
Sale
Calculated transaction value
$68.97K
2,759 shares @ $25
Traded
Aug 18, 2026
Filed
Aug 18, 2026
Buckley Sean Patrick
See Remarks
Sale
Calculated transaction value
$201.07K
8,271 shares @ $24.31
Traded
Aug 17, 2026
Filed
Aug 18, 2026
Buonasera David
Chief Technology Officer
Disposition
Calculated transaction value
$200.36K
8,102 shares @ $24.73
Traded
Aug 15, 2026
Filed
Aug 18, 2026
Buckley Sean Patrick
See Remarks
Disposition
Calculated transaction value
$289.71K
11,715 shares @ $24.73
Traded
Aug 15, 2026
Filed
Aug 18, 2026
Evans Katie Seitz
See Remarks
Disposition
Calculated transaction value
$277.07K
11,204 shares @ $24.73
Traded
Aug 15, 2026
Filed
Aug 18, 2026
Saltz Aaron
Chief Legal Officer
Disposition
Calculated transaction value
$139.16K
5,627 shares @ $24.73
Traded
Aug 15, 2026
Filed
Aug 18, 2026
Gephart Brian
Chief Accounting Officer
Disposition
Calculated transaction value
$93.7K
3,789 shares @ $24.73
Traded
Aug 15, 2026
Filed
Aug 18, 2026