Magnite director sells 10,363 shares at $23.76
Magnite director Robert F. Spillane exercised and sold 10,363 shares in an option-related transaction on September 14, 2026.
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Form Type
4
Rhea-AI Filing Summary
MAGNITE, INC. (MGNI) director Robert F. Spillane exercised stock options for 10,363 shares of common stock on September 14, 2026 at an exercise price of $5.17 per share, then sold 10,363 shares of common stock the same day at a weighted average price of $23.76 per share. The options were fully vested and granted as compensation, and this exercise left no shares remaining under that option award.
Insider Trade Summary
Exercise and Sale: 10,363 shares ($193K approx. pre-tax spread)
Exercise and Sale
3 txns
Insider
Spillane Robert F
Role
Director
Sold
10,363 shs ($246K)
Approx. gross sale proceeds
$246K
Approx. exercise cost
$54K
Approx. pre-tax spread
$193K
Share of Position Sold
15.2%
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise | Stock Option (right to buy) F3, F2 | 10,363 | $0.00 | $0.00 |
| Exercise | Common Stock | 10,363 | $5.17 | $54K |
| Sale | Common Stock F1 | 10,363 | $23.76 | $246K |
Holdings After Transaction:
Stock Option (right to buy) — 0 contracts (Direct);
Common Stock — 57,715 shares (Direct)
Holdings Before and After:
Stock Option (right to buy), 10,363 to 0 contracts (Direct);
Common Stock, 57,715 to 57,715 shares (Direct)
Other Insiders: 6 other insiders reported open-market sales of this stock in the 30 days up to this filing.
Footnotes (3)
- F1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.75 to $23.7901, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4.
- F2. The stock options have fully vested and are immediately exercisable.
- F3. Granted as compensation for services.
Key Figures
Options exercised: 10,363 shares
Exercise price: $5.17 per share
Shares sold: 10,363 shares
+3 more
6 metrics
Options exercised
10,363 shares
Stock options exercised for Magnite common stock on September 14, 2026
Exercise price
$5.17 per share
Exercise price of stock options for 10,363 shares of Magnite common stock
Shares sold
10,363 shares
Magnite common stock sold on September 14, 2026
Weighted average sale price
$23.76 per share
Shares sold in multiple transactions between $23.75 and $23.7901
Option expiration date
May 23, 2027
Expiration date of the exercised stock option grant
Options remaining after exercise
0 options
Total stock options under this award following the reported exercise
Key Terms
weighted average price, stock options, immediately exercisable
3 terms
weighted average price financial
"The price reported in Column 4 is a weighted average price."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
stock options financial
"The stock options have fully vested and are immediately exercisable."
Stock options are agreements that give a person the right to buy or sell a company's stock at a specific price within a certain time frame. They are often used as a reward or incentive, similar to a coupon that can be used later if the stock price rises, allowing the holder to make a profit.
immediately exercisable financial
"The stock options have fully vested and are immediately exercisable."
FAQ
AI-generated questions and answers. How Rhea-AI works. Not financial advice.
What did MAGNITE, INC. (MGNI) director Robert F. Spillane report on this Form 4?
He reported exercising stock options for 10,363 shares of Magnite common stock at $5.17 per share and selling 10,363 shares of common stock on September 14, 2026 in a related transaction.
What was the exercise price of the options Robert F. Spillane exercised in MGNI?
The stock options he exercised entitled him to acquire Magnite common stock at an exercise price of $5.17 per share, and the options were fully vested and immediately exercisable.
Was a Rule 10b5-1 trading plan used for Robert F. Spillane’s MGNI transactions?
No. The Form 4 indicates no Rule 10b5-1 trading plan for these transactions, and the footnotes do not reference any such plan.
Does Robert F. Spillane retain any options from this MGNI grant after the transaction?
No. After exercising the stock option for 10,363 shares, the Form 4 shows 0 options remaining under that specific award.
AI-generated analysis. How Rhea-AI works. Not financial advice.
