William D. McCombe is a corporate insider at Cytek Biosciences, Inc. (CTKB). McCombe has reported 4 insider filings with the SEC since 2025. The most recent filing was in May 2026.
Every role William D. McCombe has reported on a Form 4, reconstructed from the filings themselves. Reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
Cytek Biosciences, Inc. (CTKB)1 filingUpdated Aug 30, 2026
William D. McCombe is Chief Financial Officer of Cytek Biosciences, Inc. (CTKB). 5 SEC Form 4 filings on record going back to 2025, most recently on 20 August 2026.
Every recent SEC Form 4 transaction William D. McCombe has reported, most recent first.
InsiderAlpha's records for William D. McCombe go back to 2025: 5 primary Form 4 filings, an average of 2.5 per year. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
No other insider has filed at William D. McCombe's companies, so these are insiders reporting open-market trades at other companies in the same sector.
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
William D. McCombe is a corporate insider, tracked as Chief Financial Officer of Cytek Biosciences, Inc. (CTKB). InsiderAlpha holds 5 primary Form 4 filings for them, the earliest from 2025, updated as new SEC EDGAR filings are processed.
1 primary Form 4 filing in the last 90 days, covering 1 company.
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.
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
$CTKB Cytek Biosciences, Inc.4.4K shares @ $4.67$21K