William D. McCombe

Companies

• Cytek Biosciences, Inc.Chief financial officer Mar 20, 2024 to now¹
• Velo3D, Inc.Board member Oct 1, 2021 to Aug 23, 2023²
• Velo3D, Inc.Chief financial officer Oct 1, 2021 to Aug 23, 2023²

Holdings

Stock this person has reported owning, from the forms officers and directors file with the SEC. See the biggest insider stakes.

Shares held

• VVelo3D, Inc. VELO169,998 shares³$1.2M at $7.20Aug 21, 2023
• CBCytek Biosciences, Inc. CTKB134,693 shares⁴$707.1K at $5.25Aug 18, 2026

As of each latest filing. The line shows shares held over time.

Recent filings

• Aug 18, 2026Shares withheld for tax 5,401 shares at $4.67 of Cytek Biosciences, Inc.⁴
• Aug 18, 2026Exercised options 16,049 shares of Cytek Biosciences, Inc.⁴
• Aug 18, 2026Shares withheld for tax 4,392 shares at $4.67 of Cytek Biosciences, Inc.⁴
• Aug 18, 2026Exercised options 13,051 shares of Cytek Biosciences, Inc.⁴
• Aug 18, 2026Shares withheld for tax 2,111 shares at $4.67 of Cytek Biosciences, Inc.⁴
• Aug 18, 2026Exercised options 6,320 shares of Cytek Biosciences, Inc.⁴
• May 18, 2026Shares withheld for tax 3,839 shares at $3.55 of Cytek Biosciences, Inc.⁵
• May 18, 2026Exercised options 10,699 shares of Cytek Biosciences, Inc.⁵
• May 18, 2026Shares withheld for tax 3,122 shares at $3.55 of Cytek Biosciences, Inc.⁵
• May 18, 2026Exercised options 8,700 shares of Cytek Biosciences, Inc.⁵
• May 18, 2026Shares withheld for tax 2,268 shares at $3.55 of Cytek Biosciences, Inc.⁵
• May 18, 2026Exercised options 6,320 shares of Cytek Biosciences, Inc.⁵
• Mar 10, 2026Shares withheld for tax 7,145 shares at $4.23 of Cytek Biosciences, Inc.⁶
• Mar 10, 2026Exercised options 17,401 shares of Cytek Biosciences, Inc.⁶
• Mar 10, 2026Shares withheld for tax 2,603 shares at $4.23 of Cytek Biosciences, Inc.⁶
• Mar 10, 2026Exercised options 6,320 shares of Cytek Biosciences, Inc.⁶
• Nov 18, 2025Shares withheld for tax 4,196 shares at $5.53 of Cytek Biosciences, Inc.⁷
• Nov 18, 2025Exercised options 13,051 shares of Cytek Biosciences, Inc.⁷
• Nov 18, 2025Shares withheld for tax 2,032 shares at $5.53 of Cytek Biosciences, Inc.⁷
• Nov 18, 2025Exercised options 6,320 shares of Cytek Biosciences, Inc.⁷
• Aug 18, 2025Shares withheld for tax 5,084 shares at $4.06 of Cytek Biosciences, Inc.⁸
• Aug 18, 2025Exercised options 13,051 shares of Cytek Biosciences, Inc.⁸
• Aug 18, 2025Shares withheld for tax 2,462 shares at $4.06 of Cytek Biosciences, Inc.⁸
• Aug 18, 2025Exercised options 6,320 shares of Cytek Biosciences, Inc.⁸
• Jun 2, 2025Bought 35,000 shares at $2.78 of Cytek Biosciences, Inc.⁹