Summary
Updated Aug 31, 2026
Julius Genachowski is Director of Sonos Inc (SONO). 13 SEC Form 4 filings on record going back to 2025, most recently on 30 July 2026. Most recent open-market trade: sold $338K of SONO on 30 July 2026. Lifetime open-market purchases: $250K. Lifetime open-market sales: $1.02M.
Recent Transactions
20Every recent SEC Form 4 transaction Julius Genachowski has reported, most recent first.
Trading Pattern
InsiderAlpha's records for Julius Genachowski go back to 2025: 13 primary Form 4 filings, an average of 6.5 per year. The typical open-market purchase is $250K (1 buy totaling $250K). The largest single buy on record is $250K of SONO in 2025. Sales side: 4 recorded sales totaling $1.02M, so the filing history runs sell-heavy by dollar value. 6 recorded transactions carry a Rule 10b5-1 flag, meaning they were pre-scheduled under a written trading plan rather than discretionary.
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Julius Genachowski 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.
- Coliseum Capital Management, LLC - $46.91M of SONO open-market activity in the last 12 months
- Michael Miebach - $27.92M of MA open-market activity in the last 12 months
- Edward Grunde McLaughlin - $18.08M of MA open-market activity in the last 12 months
- J. Mehra Sachin - $16.79M of MA open-market activity in the last 12 months
- Hai Ling - $4.48M of MA open-market activity in the last 12 months
- Raj Seshadri - $3.58M of MA 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 Julius Genachowski?
Julius Genachowski is a corporate insider, tracked as Director of Sonos Inc (SONO). InsiderAlpha holds 13 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 Julius Genachowski submitted recently?
2 primary Form 4 filings in the last 90 days, covering 2 companies.
Has Julius Genachowski been buying or selling stock?
Recorded transactions: 1 open-market purchase ($250K) and 4 open-market sales ($1.02M) across all tracked filings.
Where can I see all of Julius Genachowski'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.
Learn More
Follow Julius Genachowski and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial