CIK 0001595974 · Large accelerated filer
MAGNITE, INC.
Sign in to watch- Ticker
- MGNI
- Exchange
- Nasdaq
- Industry
- Services-Computer Programming, Data Processing, Etc.
- FY end
- Dec 31
- Incorporated
- DE
- Entity type
- operating
- EIN
- 208881738
- Phone
- 212-243-2769
- Business address
- 1250 BROADWAY, 9TH FLOOR, NEW YORK, NY
- Former names
- RUBICON PROJECT, INC.
- Open-market buys, last 90 days
- $0
- in 0 filings
- Open-market sales, last 90 days
- $9,462,259
- in 21 filings, $6.0M under 10b5-1 plans
Net −$9,462,259. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
Reading 100 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-08-13 | Day David CHIEF FINANCIAL OFFICER | Gift | −26,258 | 467,031 | ||
| 2026-08-10 | Gephart Brian CHIEF ACCOUNTING OFFICER | Sale | −12,479 | $24.68 | $308K | 106,117 |
| 2026-08-10 | Lam Rachel Director | Sale | −10,000 | $24.16 | $242K | 230,620 |
| 2026-08-10 | Caine Paul Director | Sale 10b5-1 | −5,000 | $24.35 | $122K | 157,401 |
| 2026-08-06 | Buonasera David CHIEF TECHNOLOGY OFFICER | Sale 10b5-1 | −4,176 | $22.81 | $95K | 264,309 |
| 2026-08-06 | Buonasera David CHIEF TECHNOLOGY OFFICER | Sale 10b5-1 | −2,602 | $24.00 | $62K | 261,707 |
| 2026-08-06 | Buonasera David CHIEF TECHNOLOGY OFFICER | Sale 10b5-1 | −871 | $25.00 | $22K | 260,836 |
| 2026-08-06 | Buckley Sean Patrick See Remarks | Option exercise 10b5-1 | +28,703 | $13.90 | $399K | 382,984 |
| 2026-08-06 | Buckley Sean Patrick See Remarks | Sale 10b5-1 | −47,942 | $25.09 | $1.2M | 335,042 |
| 2026-08-06 | Buckley Sean Patrick See Remarks | Sale 10b5-1 | −19,237 | $23.00 | $442K | 315,805 |
| 2026-08-06 | Buckley Sean Patrick See Remarks | Option exercise · Stock Option (right to buy) 10b5-1 | −28,703 | 57,405 | ||
| 2026-08-06 | Evans Katie Seitz See Remarks | Option exercise 10b5-1 | +20,000 | $5.16 | $103K | 516,840 |
| 2026-08-06 | Evans Katie Seitz See Remarks | Sale 10b5-1 | −20,000 | $24.00 | $480K | 496,840 |
| 2026-08-06 | Evans Katie Seitz See Remarks | Option exercise · Employee Stock Option (Right to Buy) 10b5-1 | −20,000 | 0 | ||
| 2026-08-06 | Knopper Douglas S Director | Sale 10b5-1 | −37,337 | $22.72 | $848K | 88,473 |
| 2026-08-06 | BARRETT MICHAEL G. CEO | Option exercise 10b5-1 | +293,968 | $5.80 | $1.7M | 697,042 |
| 2026-08-06 | BARRETT MICHAEL G. CEO | Sale 10b5-1 | −293,968 | $22.72 | $6.7M | 403,074 |
| 2026-08-06 | BARRETT MICHAEL G. CEO | Option exercise · Stock Option (right to buy) 10b5-1 | −293,968 | 0 | ||
| 2026-07-15 | BARRETT MICHAEL G. CEO | Option exercise 10b5-1 | +38,596 | $5.80 | $224K | 441,670 |
| 2026-07-15 | BARRETT MICHAEL G. CEO | Sale 10b5-1 | −38,596 | $20.35 | $785K | 403,074 |
Page 3 of 9 · 168 trades