Cytek Biosciences, Inc.
US ˙ NasdaqGS ˙ US23285D1090

SecurityCTKB / Cytek Biosciences, Inc.
InsiderValerie Barnett
This page shows the track record and history of Barnett Valerie 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 Valerie Barnett 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 (%)
2021-07-22 1,900 17.0000 1,900 17.0000 32,300 55 27.93 20,767 64.29

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 Valerie Barnett 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 Barnett Valerie CTKB Common Stock F - Taxes D 3.5500 -3,386 -12 150,012
2026-05-20 2026-05-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 9,435 153,398
2026-05-20 2026-05-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 3.5500 -2,602 -9 143,963
2026-05-20 2026-05-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 7,250 146,565
2026-05-20 2026-05-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 3.5500 -1,850 -7 139,315
2026-05-20 2026-05-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 5,156 141,165
2026-05-20 2026-05-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 3.5500 -881 -3 136,009
2026-05-20 2026-05-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,454 136,890
2026-03-12 2026-03-10 4 Barnett Valerie CTKB Common Stock F - Taxes D 4.2300 -5,740 -24 134,436
2026-03-12 2026-03-10 4 Barnett Valerie CTKB Common Stock M - Exercise D 14,501 140,176
2026-03-12 2026-03-10 4 Barnett Valerie CTKB Common Stock F - Taxes D 4.2300 -4,247 -18 125,675
2026-03-12 2026-03-10 4 Barnett Valerie CTKB Common Stock M - Exercise D 10,313 129,922
2026-03-12 2026-03-10 4 Barnett Valerie CTKB Common Stock F - Taxes D 4.2300 -1,761 -7 119,609
2026-03-12 2026-03-10 4 Barnett Valerie CTKB Common Stock M - Exercise D 4,908 121,370
2026-02-20 2026-02-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 4.2000 -525 -2 116,462
2026-02-20 2026-02-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 1,346 116,987
2025-11-20 2025-11-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 5.5300 -3,497 -19 115,641
2025-11-20 2025-11-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 10,875 119,138
2025-11-20 2025-11-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 5.5300 -2,487 -14 108,263
2025-11-20 2025-11-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 7,735 110,750
2025-11-20 2025-11-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 5.5300 -1,184 -7 103,015
2025-11-20 2025-11-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 3,681 104,199
2025-11-20 2025-11-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 5.5300 -649 -4 100,518
2025-11-20 2025-11-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 101,167
2025-08-20 2025-08-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 4.0600 -3,609 -15 99,151
2025-08-20 2025-08-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 10,875 102,760
2025-08-20 2025-08-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 4.0600 -3,000 -12 91,885
2025-08-20 2025-08-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 7,735 94,885
2025-08-20 2025-08-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 4.0600 -1,434 -6 87,150
2025-08-20 2025-08-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 3,681 88,584
2025-08-20 2025-08-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 4.0600 -786 -3 84,903
2025-08-20 2025-08-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 85,689
2025-05-21 2025-05-19 4 Barnett Valerie CTKB Common Stock F - Taxes D 2.6900 -2,824 -8 83,673
2025-05-21 2025-05-19 4 Barnett Valerie CTKB Common Stock M - Exercise D 7,250 86,497
2025-05-21 2025-05-19 4 Barnett Valerie CTKB Common Stock F - Taxes D 2.6900 -2,009 -5 79,247
2025-05-21 2025-05-19 4 Barnett Valerie CTKB Common Stock M - Exercise D 5,156 81,256
2025-05-21 2025-05-19 4 Barnett Valerie CTKB Common Stock F - Taxes D 2.6900 -956 -3 76,100
2025-05-21 2025-05-19 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,454 77,056
2025-05-21 2025-05-19 4 Barnett Valerie CTKB Common Stock F - Taxes D 2.6900 -786 -2 74,602
2025-05-21 2025-05-19 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 75,388
2025-03-12 2025-03-10 4 Barnett Valerie CTKB Common Stock F - Taxes D 4.3600 -4,017 -18 73,372
2025-03-12 2025-03-10 4 Barnett Valerie CTKB Common Stock M - Exercise D 10,313 77,389
2025-03-12 2025-03-10 4 Barnett Valerie CTKB Common Stock F - Taxes D 4.3600 -1,912 -8 67,076
2025-03-12 2025-03-10 4 Barnett Valerie CTKB Common Stock M - Exercise D 4,908 68,988
2025-02-20 2025-02-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 5.3100 -786 -4 64,080
2025-02-20 2025-02-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 64,866
2024-11-20 2024-11-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 6.0300 -2,603 -16 62,850
2024-11-20 2024-11-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 7,735 65,453
2024-11-20 2024-11-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 6.0300 -1,235 -7 57,718
2024-11-20 2024-11-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 3,681 58,953
2024-11-20 2024-11-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 6.0300 -661 -4 55,272
2024-11-20 2024-11-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 55,933
2024-08-21 2024-08-19 4 Barnett Valerie CTKB Common Stock F - Taxes D 5.5300 -2,826 -16 53,917
2024-08-21 2024-08-19 4 Barnett Valerie CTKB Common Stock M - Exercise D 7,735 56,743
2024-08-21 2024-08-19 4 Barnett Valerie CTKB Common Stock F - Taxes D 5.5300 -1,434 -8 49,008
2024-08-21 2024-08-19 4 Barnett Valerie CTKB Common Stock M - Exercise D 3,681 50,442
2024-08-21 2024-08-19 4 Barnett Valerie CTKB Common Stock F - Taxes D 5.5300 -786 -4 46,761
2024-08-21 2024-08-19 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 47,547
2024-05-22 2024-05-20 4 Barnett Valerie CTKB Common Stock F - Taxes D 5.9600 -2,009 -12 42,044
2024-05-22 2024-05-20 4 Barnett Valerie CTKB Common Stock M - Exercise D 5,156 44,053
2024-05-22 2024-05-20 4 Barnett Valerie CTKB Common Stock F - Taxes D 5.9600 -956 -6 38,897
2024-05-22 2024-05-20 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,454 39,853
2024-05-22 2024-05-20 4 Barnett Valerie CTKB Common Stock F - Taxes D 5.9600 -786 -5 37,399
2024-05-22 2024-05-20 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 38,185
2024-03-13 2024-03-11 4 Barnett Valerie CTKB Common Stock F - Taxes D 7.2200 -1,912 -14 36,169
2024-03-13 2024-03-11 4 Barnett Valerie CTKB Common Stock M - Exercise D 4,908 38,081
2024-02-22 2024-02-20 4 Barnett Valerie CTKB Common Stock F - Taxes D 8.3800 -786 -7 33,173
2024-02-22 2024-02-20 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 33,959
2023-11-21 2023-11-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 5.9800 -1,434 -9 31,943
2023-11-21 2023-11-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 3,681 33,377
2023-11-21 2023-11-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 5.9800 -786 -5 29,696
2023-11-21 2023-11-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 30,482
2023-08-21 2023-08-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 8.4600 -1,434 -12 28,466
2023-08-21 2023-08-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 3,681 29,900
2023-08-21 2023-08-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 8.4600 -786 -7 26,219
2023-08-21 2023-08-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 27,005
2023-05-19 2023-05-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 6.6900 -956 -6 23,070
2023-05-19 2023-05-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,454 24,026
2023-05-19 2023-05-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 6.6900 -786 -5 21,572
2023-05-19 2023-05-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 22,358
2023-02-23 2023-02-21 4 Barnett Valerie CTKB Common Stock F - Taxes D 10.9700 -786 -9 20,342
2023-02-23 2023-02-21 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 21,128
2022-11-22 2022-11-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 14.7500 -786 -12 19,111
2022-11-22 2022-11-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 19,897
2022-08-19 2022-08-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 14.0600 -786 -11 17,881
2022-08-19 2022-08-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,016 18,667
2022-05-20 2022-05-18 4 Barnett Valerie CTKB Restricted Stock Units M - Exercise D -2,688 29,570
2022-05-20 2022-05-18 4 Barnett Valerie CTKB Common Stock F - Taxes D 9.6500 -1,047 -10 14,041
2022-05-20 2022-05-18 4 Barnett Valerie CTKB Common Stock M - Exercise D 2,688 15,088
2022-03-08 2022-03-04 4 Barnett Valerie CTKB Stock Option (Right to Buy) M - Exercise D 4.71 -10,500 122,830
2022-03-08 2022-03-04 4 Barnett Valerie CTKB Common Stock M - Exercise D 4.7100 10,500 49 12,400
2022-03-02 2022-02-28 4 Barnett Valerie CTKB Restricted Stock Units A - Award D 32,258 32,258
2022-03-02 2022-02-28 4 Barnett Valerie CTKB Stock Option (Right to Buy) A - Award D 13.64 48,671 48,671
2021-07-27 2021-07-22 4 Barnett Valerie CTKB Common Stock P - Purchase D 17.0000 1,900 32 1,900
2021-07-26 2021-07-22 4 Barnett Valerie CTKB Stock Option (Right to Buy) A - Award D 17.00 75,000 75,000
P
非デリバティブまたはデリバティブ証券の公開市場または非公開購入
S
非デリバティブ証券またはデリバティブ証券の公開市場または非公開売却
A
会社からの有価証券の交付、授与その他の取得 (オプション等)
C
デリバティブの転換
D
有価証券の会社への売却または譲渡
F
会社から受領した有価証券の一部を使用した、行使価格または納税義務のお支払い
G
内部者によるまたは内部者に対する有価証券の贈与
K
株式スワップと類似のヘッジ取引
M
会社から受け取ったデリバティブ証券 (オプションなど) の行使または転換
V
フォーム4により任意に報告した取引
J
その他 (取引を説明する脚注を含む)