David Buonasera
CIK: 0001966857
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
MAGNITE, INC.
Discretionary Trading P&L
Holdings
Transaction History (34 total)
- Sep 14, 2026MGNI
MAGNITE, INC.
Sale(S)Direct1.2K shares at avg. $24.00$28K - Sep 2, 2026MGNI
MAGNITE, INC.
Sale(S)Direct1K shares at avg. $25.00$26K - Sep 1, 2026MGNI
MAGNITE, INC.
Sale(S)Direct5.4K shares at avg. $23.42$126K - Aug 15, 2026MGNI
MAGNITE, INC.
Tax Payment(F)Direct8.1K shares at avg. $24.73$200K - Aug 6, 2026MGNI
MAGNITE, INC.
Sale(S)Direct4.2K shares at avg. $22.81$95K - Aug 6, 2026MGNI
MAGNITE, INC.
Sale(S)Direct871 shares at avg. $25.00$22K - Aug 6, 2026MGNI
MAGNITE, INC.
Sale(S)Direct2.6K shares at avg. $24.00$62K - Jul 7, 2026MGNI
MAGNITE, INC.
Sale(S)Direct1.2K shares at avg. $21.00$26K - Jul 1, 2026MGNI
MAGNITE, INC.
Sale(S)Direct9.4K shares at avg. $20.00$188K - Jun 17, 2026MGNI
MAGNITE, INC.
Sale(S)Direct1.4K shares at avg. $19.00$27K - Jun 16, 2026MGNI
MAGNITE, INC.
Sale(S)Direct11.2K shares at avg. $18.00$202K - Jun 15, 2026MGNI
MAGNITE, INC.
Sale(S)Direct1.1K shares at avg. $17.00$18K - Jun 1, 2026MGNI
MAGNITE, INC.
Sale(S)Direct1.4K shares at avg. $15.00$21K - May 15, 2026MGNI
MAGNITE, INC.
Tax Payment(F)Direct8.3K shares at avg. $12.82$107K - Feb 15, 2026MGNI
MAGNITE, INC.
Tax Payment(F)Direct17.1K shares at avg. $11.70$201K - Jan 9, 2026MGNI
MAGNITE, INC.
Exercise(M)Direct22.9K shares- - Jan 9, 2026MGNI
MAGNITE, INC.
Tax Payment(F)Direct12.3K shares at avg. $16.17$199K - Jan 1, 2026MGNI
MAGNITE, INC.
Award(A)Direct76.8K shares- - Nov 15, 2025MGNI
MAGNITE, INC.
Tax Payment(F)Direct7.1K shares at avg. $14.15$101K - Sep 3, 2025MGNI
MAGNITE, INC.
Sale(S)Direct3K shares at avg. $25.37$75K - Aug 18, 2025MGNI
MAGNITE, INC.
Sale(S)Direct7.8K shares at avg. $23.85$187K - Jun 30, 2025MGNI
MAGNITE, INC.
Sale(S)Direct9.3K shares at avg. $22.00$204K - May 27, 2025MGNI
MAGNITE, INC.
Sale(S)Direct8.7K shares at avg. $16.00$140K - May 23, 2025MGNI
MAGNITE, INC.
Sale(S)Direct3.7K shares at avg. $15.03$55K - May 15, 2025MGNI
MAGNITE, INC.
Tax Payment(F)Direct8K shares at avg. $15.88$128K
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Sep 14, 2026 | MGNI MAGNITE, INC. | Sale(S) | 1,165 | $24.00 | $27,960 | Direct |
| Sep 2, 2026 | MGNI MAGNITE, INC. | Sale(S) | 1,043 | $25.00 | $26,075 | Direct |
| Sep 1, 2026 | MGNI MAGNITE, INC. | Sale(S) | 5,371 | $23.42 | $125,789 | Direct |
| Aug 15, 2026 | MGNI MAGNITE, INC. | Tax Payment(F) | 8,102 | $24.73 | $200,362 | Direct |
| Aug 6, 2026 | MGNI MAGNITE, INC. | Sale(S) | 4,176 | $22.81 | $95,255 | Direct |
| Aug 6, 2026 | MGNI MAGNITE, INC. | Sale(S) | 871 | $25.00 | $21,775 | Direct |
| Aug 6, 2026 | MGNI MAGNITE, INC. | Sale(S) | 2,602 | $24.00 | $62,448 | Direct |
| Jul 7, 2026 | MGNI MAGNITE, INC. | Sale(S) | 1,224 | $21.00 | $25,704 | Direct |
| Jul 1, 2026 | MGNI MAGNITE, INC. | Sale(S) | 9,376 | $20.00 | $187,520 | Direct |
| Jun 17, 2026 | MGNI MAGNITE, INC. | Sale(S) | 1,409 | $19.00 | $26,771 | Direct |
| Jun 16, 2026 | MGNI MAGNITE, INC. | Sale(S) | 11,233 | $18.00 | $202,194 | Direct |
| Jun 15, 2026 | MGNI MAGNITE, INC. | Sale(S) | 1,057 | $17.00 | $17,969 | Direct |
| Jun 1, 2026 | MGNI MAGNITE, INC. | Sale(S) | 1,409 | $15.00 | $21,135 | Direct |
| May 15, 2026 | MGNI MAGNITE, INC. | Tax Payment(F) | 8,335 | $12.82 | $106,855 | Direct |
| Feb 15, 2026 | MGNI MAGNITE, INC. | Tax Payment(F) | 17,137 | $11.70 | $200,503 | Direct |
| Jan 9, 2026 | MGNI MAGNITE, INC. | Exercise(M) | 22,935 | - | $0 | Direct |
| Jan 9, 2026 | MGNI MAGNITE, INC. | Tax Payment(F) | 12,330 | $16.17 | $199,376 | Direct |
| Jan 1, 2026 | MGNI MAGNITE, INC. | Award(A) | 76,803 | - | $0 | Direct |
| Nov 15, 2025 | MGNI MAGNITE, INC. | Tax Payment(F) | 7,129 | $14.15 | $100,875 | Direct |
| Sep 3, 2025 | MGNI MAGNITE, INC. | Sale(S) | 2,950 | $25.37 | $74,842 | Direct |
| Aug 18, 2025 | MGNI MAGNITE, INC. | Sale(S) | 7,834 | $23.85 | $186,841 | Direct |
| Jun 30, 2025 | MGNI MAGNITE, INC. | Sale(S) | 9,289 | $22.00 | $204,358 | Direct |
| May 27, 2025 | MGNI MAGNITE, INC. | Sale(S) | 8,742 | $16.00 | $139,872 | Direct |
| May 23, 2025 | MGNI MAGNITE, INC. | Sale(S) | 3,653 | $15.03 | $54,905 | Direct |
| May 15, 2025 | MGNI MAGNITE, INC. | Tax Payment(F) | 8,038 | $15.88 | $127,643 | Direct |
1-25 of 34 transactions
About Buonasera David
Buonasera David (SEC CIK 0001966857) files insider reports with the SEC as CHIEF TECHNOLOGY OFFICER of MAGNITE, INC. (MGNI).
Signal8 holds 26 ownership filings by Buonasera David, all Form 4s, filed between Sep 4, 2024 and Sep 16, 2026. Those filings report 34 transactions, from Sep 1, 2024 to Sep 14, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Buonasera David's filings is in NEW YORK, NY.
Recent filings by Buonasera David
- Sep 14, 2026: Open-market sale of MGNI shares (Form 4, code S).
- Sep 2, 2026: Open-market sale of MGNI shares (Form 4, code S).
- Sep 1, 2026: Open-market sale of MGNI shares (Form 4, code S).
- Aug 15, 2026: Tax withholding of MGNI shares (Form 4, code F).
- Aug 6, 2026: Open-market sales of MGNI shares (3 lines, Form 4, code S).
Other insiders filing for MAGNITE, INC. (MGNI)
- Caine Paul, Director
- Sullivan Haas, CHIEF ACCOUNTING OFFICER
- Gephart Brian, CHIEF FINANCIAL OFFICER
- Knopper Douglas S, Director
- Spillane Robert F, Director
- Evans Katie Seitz