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Insider · CIK 0001917981

Diane Yu

director

Files at MGNI (MAGNITE, INC.). First filing Aug 27, 2025, latest Aug 27, 2025.

Diane Yu files SEC Form 4 as director at MGNI (MAGNITE, INC.). Since Aug 27, 2025, Diane Yu has reported 0 open-market buys worth $0 and 1 open-market sell worth $505k, the latest filed on Aug 27, 2025.

A track record needs three past buys with six months of prices behind them; Diane Yu has 0, so none is measured yet.

The newest scored trade: sold $505k of MGNI on Aug 26, 2025, filed Aug 27, 2025, scored 53 (moderate).

Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 1
$0 bought, $505k sold

Where the trades landed

Last year at the company this insider has traded most, with each buy and sell on the bar it happened.

MGNI: MAGNITE, INC.

MGNIOct 9, 2026 · close 25.40

Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™

Signals

This insider’s open-market buys and sells, scored.

ScoreCompanyValueHoldingsPrice contextFiled
53Moderate
MGNIsell 11
MAGNITE, INC.
$505k
20,000 shares
-23%+179% from low-1% from high

Planned sales

Form 144 notices this insider filed before selling restricted or control stock, newest first.

FiledCompanySharesValueSale datePast 3 months
Aug 26, 2025 MGNI
MAGNITE, INC.
20,000
0.01% of outstanding
$505kAug 26, 2025none

Transactions

Every row this insider has filed, 3 in all, newest first.

DateCompanyTransactionSharesPriceValueHoldings afterFiled
Jun 8, 2026MGNI
MAGNITE, INC.
AGrant or award
Common Stock
+13,798$0.00$081,279Jun 10, 2026
Aug 26, 2025MGNI
MAGNITE, INC.
SOpen-market sale
Common Stock
-20,000$25.23$505k67,481Aug 27, 2025
Jun 5, 2025MGNI
MAGNITE, INC.
AGrant or award
Common Stock
+10,766$0.00$087,481Jun 6, 2025

Questions about Diane Yu

Answered from the filings on this page, as of the latest one.

Is Diane Yu buying or selling?

Not in the last 12 months. Diane Yu's latest open-market trade on SEC Form 4 was sold $505k of MGNI on Aug 26, 2025.

How did Diane Yu's past buys perform?

Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Diane Yu has 0.

Where does Diane Yu file Form 4?

Diane Yu has filed Form 4 at MGNI (MAGNITE, INC.). A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.

Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.

Diane Yu: insider trades and track record | InsiderTell