Reporting owner · CIK 0001523288

Day David

Visual SEC Form 4 history across 1 companies, 10 transactions and 5 filings.

CFOCHIEF FINANCIAL OFFICERMAGNITE, INC.
Open-market mix
Latest filingAug 18, 2026, 08:17 PM
Filings5Form 4 records
Buying$00 purchases
Selling$1M2 sales
Net value−$1MBuys minus sells
Companies13 securities
Most recentAug 15, 2026withholding

Open-market buy performance

90-day forward return on this insider's open-market purchases

90d forward
Forward return is not available yet

We compute this from each buy's stock performance 90 days after the transaction. The price history is still being populated for this insider's their open-market buys, so the average and median will appear here once the daily price refresh has covered the relevant trading days.

Monthly open-market activity

Reported purchase and sale transaction counts

Buys Sells
530-3-5Jan 242Feb 25Jan 26Aug 26

Net value flow

Buys minus sells

Jan 24
$0
Feb 25
−$1M
Jan 26
$0
Aug 26
$0

Transaction texture

Ownership and ticket size

Average P/S size$511.5K
Median P/S size$511.5K
Direct10
Indirect0
Aug 15, 2026withholding

Filing-only signals

Deterministic matches in this insider's history

Cluster Sellingpattern1Derivative Transactionfiling-context3Direct Ownershipfiling-context10Large Holdings Increaseholdings4Large Holdings Reductionholdings1Repeat Sellerpattern110b5-1 Detectedfiling-context4

Latest Form 4 facts

Quick context from source filings

Latest transaction

sale at MAGNITE, INC. on Feb 07, 2025 valued at $780,000.

Review SEC filing
Latest buy

No open-market insider purchase is available.

Associated companies

Visual map of known reporting history

MGNIMAGNITE, INC.10 transactions · latest Aug 18, 2026, 08:17 PM
TickerInsiderRoleTypeSharesValueCodeSignals90d returnFiledTrans date
MGNIDay David
CFO
withholding14.1k-$35.0MF
Direct Ownership
−6.7%08/1808/15
MGNIDay David
CFO
grant44.2k$0A
Derivative Transaction Direct Ownership Large Holdings Increase
−26.5%01/0601/01
MGNIDay David
CFO
grant131k$0A
Direct Ownership Large Holdings Increase
−26.5%01/0601/01
MGNIDay David
CFO
withholding31.1k-$62.2MF
Direct Ownership
—02/19/202502/15/2025
MGNIDay David
CFO
exercise10b5-139.0k$0M
Derivative Transaction Direct Ownership Large Holdings Reduction+1
—02/07/202502/07/2025
MGNIDay David
CFO
sale10b5-139.0k-$78.0MS
Cluster Selling Direct Ownership Repeat Seller+1
—02/07/202502/07/2025
MGNIDay David
CFO
exercise10b5-139.0k$19.1MM
Direct Ownership 10b5-1 Detected
—02/07/202502/07/2025
MGNIDay David
CFO
sale10b5-113.2k-$24.3MS
Direct Ownership 10b5-1 Detected
—02/07/202502/06/2025
MGNIDay David
CFO
grant57.5k$0A
Derivative Transaction Direct Ownership Large Holdings Increase
—01/04/202401/02/2024
MGNIDay David
CFO
grant161k$0A
Direct Ownership Large Holdings Increase
—01/04/202401/02/2024

Day David Insider Activity FAQ

SEC Form 4 context

Who is Day David?

Day David is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001523288.

Which companies has Day David reported transactions for?

MAGNITE, INC.

When was Day David's latest insider buy?

No open-market insider purchase is available for this period.

When was Day David's latest insider sale?

sale at MAGNITE, INC. on Feb 07, 2025 valued at $780,000.

Where can I see the original SEC filings?

Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.

Are performance metrics included?

This version does not calculate win rates, forward returns, benchmark-adjusted returns, or high-conviction scores.