사이텍 바이오사이언스, Inc.
US ˙ NasdaqGS ˙ US23285D1090

SecurityCTKB / Cytek Biosciences, Inc.
InsiderMcCombe William D.
This page shows the track record and history of McCombe William D. insider trades in Cytek Biosciences, Inc.. The SEC defines Insiders as officers, directors, or significant investors (greater than 10% ownership) in a company. It is illegal for insiders to make trades in their companies based on material, non-public information ("MNPI"). This does not mean it is illegal for them to make any trades in their own companies. However, they must report all trades to the SEC via a Form 4.
Insider Purchases - Short Term Profit Analysis

In this section, we analyze the profitability of every unplanned, open-market insider purchase made by McCombe William D. in CTKB / Cytek Biosciences, Inc.. This analysis helps to understand if the insider consistently generates abnormal returns, and is worth following. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Max
Price at
Max
Max
Profit ($)
Max Return (%)
2025-06-02 35,000 2.7800 35,000 2.7800 97,300 172 5.8800 108,500 111.51

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

CTKB / Cytek Biosciences, Inc. Insider Trades
Insider Sales - Short Term Loss Analysis

In this section, we analyze the short-term loss avoidance of every unplanned, open-market insider sale made by McCombe William D. in CTKB / Cytek Biosciences, Inc.. A consistent pattern of loss avoidance may suggest that future sale transactions may predict declines in price. This analysis is for one-year following each trade, and the results are theoretical.

The following table shows the most recent open market purchases that were not part of an automatic trading plan.

Trade Date Reported
Shares
Reported
Price
Adjusted
Shares
Adjusted
Price
Cost Basis Days to
Min
Price at
Min
Max Loss
Avoided ($)
Max Loss
Avoided (%)
There are no known unplanned open-market trades for this insider

Adjusted Price is the split-adjusted price. Adjusted Shares is the split-adjusted shares.

CTKB / Cytek Biosciences, Inc. Insider Trades
Insider Transaction History
File
Date
Trade
Date
Form Insider Ticker Security Title Code 10b5-1 Direct Exercise
Price
Unit
Price
Units
Changed
Value
Changed (1K)
Remaining
Options
Remaining
Shares
2026-05-20 2026-05-18 4 McCombe William D. CTKB Common Stock F - Taxes D 3.5500 -3,839 -14 111,177
2026-05-20 2026-05-18 4 McCombe William D. CTKB Common Stock M - Exercise D 10,699 115,016
2026-05-20 2026-05-18 4 McCombe William D. CTKB Common Stock F - Taxes D 3.5500 -3,122 -11 104,317
2026-05-20 2026-05-18 4 McCombe William D. CTKB Common Stock M - Exercise D 8,700 107,439
2026-05-20 2026-05-18 4 McCombe William D. CTKB Common Stock F - Taxes D 3.5500 -2,268 -8 98,739
2026-05-20 2026-05-18 4 McCombe William D. CTKB Common Stock M - Exercise D 6,320 101,007
2026-03-12 2026-03-10 4 McCombe William D. CTKB Common Stock F - Taxes D 4.2300 -7,145 -30 94,687
2026-03-12 2026-03-10 4 McCombe William D. CTKB Common Stock M - Exercise D 17,401 101,832
2026-03-12 2026-03-10 4 McCombe William D. CTKB Common Stock F - Taxes D 4.2300 -2,603 -11 84,431
2026-03-12 2026-03-10 4 McCombe William D. CTKB Common Stock M - Exercise D 6,320 87,034
2025-11-20 2025-11-18 4 McCombe William D. CTKB Common Stock F - Taxes D 5.5300 -4,196 -23 80,714
2025-11-20 2025-11-18 4 McCombe William D. CTKB Common Stock M - Exercise D 13,051 84,910
2025-11-20 2025-11-18 4 McCombe William D. CTKB Common Stock F - Taxes D 5.5300 -2,032 -11 71,859
2025-11-20 2025-11-18 4 McCombe William D. CTKB Common Stock M - Exercise D 6,320 73,891
2025-08-20 2025-08-18 4 McCombe William D. CTKB Common Stock F - Taxes D 4.0600 -5,084 -21 67,571
2025-08-20 2025-08-18 4 McCombe William D. CTKB Common Stock M - Exercise D 13,051 72,655
2025-08-20 2025-08-18 4 McCombe William D. CTKB Common Stock F - Taxes D 4.0600 -2,462 -10 59,604
2025-08-20 2025-08-18 4 McCombe William D. CTKB Common Stock M - Exercise D 6,320 62,066
2025-06-03 2025-06-02 4 McCombe William D. CTKB Common Stock P - Purchase D 2.7800 35,000 97 55,746
2025-05-21 2025-05-19 4 McCombe William D. CTKB Common Stock F - Taxes D 2.6900 -3,389 -9 20,746
2025-05-21 2025-05-19 4 McCombe William D. CTKB Common Stock M - Exercise D 8,700 24,135
2025-05-21 2025-05-19 4 McCombe William D. CTKB Common Stock F - Taxes D 2.6900 -9,848 -26 15,435
2025-05-21 2025-05-19 4 McCombe William D. CTKB Common Stock M - Exercise D 25,283 25,283
P
공개 시장에서 또는 사적으로 비파생증권 또는 파생증권 매입
S
공개 시장에서 또는 사적으로 비파생증권 또는 파생증권 매각
A
자사로부터 유가증권(옵션 등)을 보조, 지급 또는 기타 취득
C
파생상품 전환
D
자사에게 유가증권을 매각 또는 양도
F
기업으로부터 인도 받은 유가증권의 일부를 사용한 행사 가격 또는 조세 채무의 지급
G
내부자에 의한 또는 내부자에게 증권 증여
K
지분스왑 및 유사 위험 회피거래
M
자사로부터 인도 받은 파생증권(옵션 등)의 행사 또는 전환
V
보고서 양식 4에 자진 신고된 거래
J
기타 (거래 내용을 설명하는 각주와 동반)