William D. McCombe, CFO of Cytek Biosciences ($CTKB), made one open market purchase of common shares in the past year, totaling $97,300. His most recent buy occurred on June 2, 2025. This ranks 2,411th among 4,983 insiders, well below the average of $1.5 million per person across 3.3 transactions. No open market sales reported.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 10, 2026 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Common Stock | 6320 | $0.00 | 87,034.0000 | 127,604,317 | 7.83% | 0.00% |
| March 10, 2026 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Restricted Stock Units | 6320 | $0.00 | 56,889.0000 | 127,604,317 | 10.00% | 0.00% |
| March 10, 2026 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | A | Restricted Stock Units | 256790 | $0.00 | 256,790.0000 | 127,604,317 | 9999.99% | 0.20% |
| March 10, 2026 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | A | Employee Stock Option (right to buy) | 136205 | $0.00 | 136,205.0000 | 127,604,317 | 9999.99% | 0.11% |
| March 10, 2026 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | F | Common Stock | 7145 | $4.23 | 94,687.0000 | 127,604,317 | 7.02% | 0.01% |
| March 10, 2026 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Common Stock | 17401 | $0.00 | 101,832.0000 | 127,604,317 | 20.61% | 0.01% |
| March 10, 2026 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | F | Common Stock | 2603 | $4.23 | 84,431.0000 | 127,604,317 | 2.99% | 0.00% |
| March 10, 2026 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Restricted Stock Units | 17401 | $0.00 | 156,613.0000 | 127,604,317 | 10.00% | 0.01% |
| Nov. 18, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Restricted Stock Units | 6320 | $0.00 | 63,209.0000 | 127,604,317 | 9.09% | 0.00% |
| Nov. 18, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | F | Common Stock | 4196 | $5.53 | 80,714.0000 | 127,604,317 | 4.94% | 0.00% |
| Nov. 18, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Common Stock | 6320 | $0.00 | 73,891.0000 | 127,604,317 | 9.35% | 0.00% |
| Nov. 18, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | F | Common Stock | 2032 | $5.53 | 71,859.0000 | 127,604,317 | 2.75% | 0.00% |
| Nov. 18, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Common Stock | 13051 | $0.00 | 84,910.0000 | 127,604,317 | 18.16% | 0.01% |
| Nov. 18, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Restricted Stock Units | 13051 | $0.00 | 174,014.0000 | 127,604,317 | 6.98% | 0.01% |
| Aug. 18, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Common Stock | 6320 | $0.00 | 62,066.0000 | 130,611,330 | 11.34% | 0.00% |
| Aug. 18, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | F | Common Stock | 2462 | $4.06 | 59,604.0000 | 130,611,330 | 3.97% | 0.00% |
| Aug. 18, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Common Stock | 13051 | $0.00 | 72,655.0000 | 130,611,330 | 21.90% | 0.01% |
| Aug. 18, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | F | Common Stock | 5084 | $4.06 | 67,571.0000 | 130,611,330 | 7.00% | 0.00% |
| Aug. 18, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Restricted Stock Units | 6320 | $0.00 | 69,529.0000 | 130,611,330 | 8.33% | 0.00% |
| Aug. 18, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Restricted Stock Units | 13051 | $0.00 | 187,065.0000 | 130,611,330 | 6.52% | 0.01% |
| June 2, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | P | Common Stock | 35000 | $2.78 | 55,746.0000 | 130,611,330 | 168.71% | 0.03% |
| May 19, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Restricted Stock Units | 25283 | $0.00 | 75,849.0000 | 130,611,330 | 25.00% | 0.02% |
| May 19, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | F | Common Stock | 3389 | $2.69 | 20,746.0000 | 130,611,330 | 14.04% | 0.00% |
| May 19, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Common Stock | 8700 | $0.00 | 24,135.0000 | 130,611,330 | 56.37% | 0.01% |
| May 19, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | F | Common Stock | 9848 | $2.69 | 15,435.0000 | 130,611,330 | 38.95% | 0.01% |
| May 19, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Common Stock | 25283 | $0.00 | 25,283.0000 | 130,611,330 | 9999.99% | 0.02% |
| May 19, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | M | Restricted Stock Units | 8700 | $0.00 | 200,116.0000 | 130,611,330 | 4.17% | 0.01% |
| March 4, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | A | Restricted Stock Units | 208816 | $0.00 | 208,816.0000 | 130,611,330 | 9999.99% | 0.16% |
| March 4, 2025 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | A | Employee Stock Option (right to buy) | 330882 | $0.00 | 330,882.0000 | 130,611,330 | 9999.99% | 0.25% |
| May 13, 2024 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | A | Employee Stock Option (right to buy) | 150602 | $0.00 | 150,602.0000 | 135,283,044 | 9999.99% | 0.11% |
| May 13, 2024 | Cytek Biosciences, Inc. | $CTKB | McCombe William D. | Chief Financial Officer | A | Restricted Stock Units | 101132 | $0.00 | 101,132.0000 | 135,283,044 | 9999.99% | 0.07% |