Summary
Updated Aug 30, 2026
Diane Yu files SEC Form 4 reports at MAGNITE, INC. (MGNI). 2 SEC Form 4 filings on record going back to 2025, most recently on 11 June 2026. Most recent open-market trade: sold $505K of MGNI on 26 August 2025. Lifetime open-market sales: $505K.
Recent Transactions
2Every recent SEC Form 4 transaction Diane Yu has reported, most recent first.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Diane Yu files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Michael G. Barrett - $13.64M of MGNI open-market activity in the last 12 months
- Sean Patrick Buckley - $3.78M of MGNI open-market activity in the last 12 months
- Douglas S. Knopper - $1.69M of MGNI open-market activity in the last 12 months
- Sarah Patricia Harden - $1.15M of MGNI open-market activity in the last 12 months
- Adam Lee Soroca - $1.02M of MGNI open-market activity in the last 12 months
- Brian Gephart - $992K of MGNI open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Diane Yu?
Diane Yu is a corporate insider of MAGNITE, INC. (MGNI). InsiderAlpha holds 2 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Diane Yu submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Has Diane Yu been buying or selling stock?
Recorded transactions: 0 open-market purchases and 1 open-market sale ($505K) across all tracked filings.
Where can I see all of Diane Yu's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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