Insider · CIK 0001874041
Ming Yan
Files at CTKB (Cytek Biosciences, Inc.). First filing Oct 23, 2023, latest Dec 21, 2023.
In brief
Ming Yan files SEC Form 4 as officer and director at CTKB (Cytek Biosciences, Inc.). Since Oct 23, 2023, Ming Yan has reported 0 open-market buys worth $0 and 3 open-market sells worth $405k, the latest filed on Dec 21, 2023.
A track record needs three past buys with six months of prices behind them; Ming Yan has 0, so none is measured yet.
The newest scored trade: sold $189k of CTKB on Dec 19, 2023, filed Dec 21, 2023, scored 15 (weak), under a 10b5-1 plan.
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
CTKB: Cytek Biosciences, Inc.
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 15Weak | Cytek Biosciences, Inc. | $189k 20,000 shares | -0% | +132% from low-29% from high | |
| 5Weak | Cytek Biosciences, Inc. | $121k 20,000 shares | -0% | +48% from low-59% from high | |
| 20Weak | Cytek Biosciences, Inc. | $96k 20,000 shares | -0% | 0% from low-70% from high |
Planned sales
Form 144 notices this insider filed before selling restricted or control stock, newest first.
| Filed | Company | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Dec 19, 2023 | CTKB CYTEK BIOSCIENCES INC | 20,000 0.01% of outstanding | $184k | Dec 19, 2023 | $217k |
| Oct 19, 2023 | CTKB CYTEK BIOSCIENCES INC | 40,000 0.03% of outstanding | $194k | Oct 19, 2023 | $291k |
Transactions
The newest 50 of 106 rows this insider has filed.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +7,363 | - | - | 4,804,051 | Aug 20, 2026 |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -1,778 | $4.67 | $8,303 | 4,802,273 | Aug 20, 2026 |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +5,525 | - | - | 4,807,798 | Aug 20, 2026 |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -1,346 | $4.67 | $6,286 | 4,806,452 | Aug 20, 2026 |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +6,162 | - | - | 4,812,614 | Aug 20, 2026 |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -1,501 | $4.67 | $7,010 | 4,811,113 | Aug 20, 2026 |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +14,220 | - | - | 4,825,333 | Aug 20, 2026 |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -3,463 | $4.67 | $16k | 4,821,870 | Aug 20, 2026 |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -7,363 | $0.00 | $0 | 17,189 | Aug 20, 2026 |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -5,525 | $0.00 | $0 | 34,995 | Aug 20, 2026 |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -6,162 | $0.00 | $0 | 63,688 | Aug 20, 2026 |
| Aug 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -14,220 | $0.00 | $0 | 203,835 | Aug 20, 2026 |
| Jun 12, 2026 | CTKB Cytek Biosciences, Inc. | GGift Common Stock | -135,892 | $0.00 | $0 | 4,796,688 | Jun 16, 2026 |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +4,908 | - | - | 4,920,841 | May 20, 2026 |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -1,224 | $3.55 | $4,345 | 4,919,617 | May 20, 2026 |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +3,683 | - | - | 4,923,300 | May 20, 2026 |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -919 | $3.55 | $3,262 | 4,922,381 | May 20, 2026 |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +4,108 | - | - | 4,926,489 | May 20, 2026 |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -1,025 | $3.55 | $3,639 | 4,925,464 | May 20, 2026 |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +9,480 | - | - | 4,934,944 | May 20, 2026 |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -2,364 | $3.55 | $8,392 | 4,932,580 | May 20, 2026 |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -4,908 | $0.00 | $0 | 24,552 | May 20, 2026 |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -3,683 | $0.00 | $0 | 40,520 | May 20, 2026 |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -4,108 | $0.00 | $0 | 69,850 | May 20, 2026 |
| May 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -9,480 | $0.00 | $0 | 218,055 | May 20, 2026 |
| Mar 13, 2026 | CTKB Cytek Biosciences, Inc. | GGift Common Stock | -1,176,000 | $0.00 | $0 | 4,915,933 | Mar 13, 2026 |
| Mar 10, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +9,817 | - | - | 6,084,081 | Mar 12, 2026 |
| Mar 10, 2026 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -3,047 | $4.23 | $13k | 6,081,034 | Mar 12, 2026 |
| Mar 10, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +7,366 | - | - | 6,088,400 | Mar 12, 2026 |
| Mar 10, 2026 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -2,287 | $4.23 | $9,674 | 6,086,113 | Mar 12, 2026 |
| Mar 10, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +8,217 | - | - | 6,094,330 | Mar 12, 2026 |
| Mar 10, 2026 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -2,397 | $4.23 | $10k | 6,091,933 | Mar 12, 2026 |
| Mar 10, 2026 | CTKB Cytek Biosciences, Inc. | AGrant or award Employee Stock Option (right to buy)derivative | +120,688 | $0.00 | $0 | 120,688 | Mar 12, 2026 |
| Mar 10, 2026 | CTKB Cytek Biosciences, Inc. | AGrant or award Restricted Stock Unitsderivative | +227,535 | $0.00 | $0 | 227,535 | Mar 12, 2026 |
| Mar 10, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -9,817 | $0.00 | $0 | 29,460 | Mar 12, 2026 |
| Mar 10, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -7,366 | $0.00 | $0 | 44,203 | Mar 12, 2026 |
| Mar 10, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -8,217 | $0.00 | $0 | 73,958 | Mar 12, 2026 |
| Feb 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +1,332 | - | - | 6,074,659 | Feb 20, 2026 |
| Feb 18, 2026 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -395 | $4.20 | $1,659 | 6,074,264 | Feb 20, 2026 |
| Feb 18, 2026 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -1,332 | $0.00 | $0 | 0 | Feb 20, 2026 |
| Nov 18, 2025 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +1,981 | - | - | 6,059,400 | Nov 20, 2025 |
| Nov 18, 2025 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -483 | $5.53 | $2,671 | 6,058,917 | Nov 20, 2025 |
| Nov 18, 2025 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +7,363 | - | - | 6,066,280 | Nov 20, 2025 |
| Nov 18, 2025 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -1,793 | $5.53 | $9,915 | 6,064,487 | Nov 20, 2025 |
| Nov 18, 2025 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +5,525 | - | - | 6,070,012 | Nov 20, 2025 |
| Nov 18, 2025 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -1,346 | $5.53 | $7,443 | 6,068,666 | Nov 20, 2025 |
| Nov 18, 2025 | CTKB Cytek Biosciences, Inc. | MOption exercise Common Stock | +6,162 | - | - | 6,074,828 | Nov 20, 2025 |
| Nov 18, 2025 | CTKB Cytek Biosciences, Inc. | FTax withholding Common Stock | -1,501 | $5.53 | $8,301 | 6,073,327 | Nov 20, 2025 |
| Nov 18, 2025 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -1,981 | $0.00 | $0 | 1,332 | Nov 20, 2025 |
| Nov 18, 2025 | CTKB Cytek Biosciences, Inc. | MOption exercise Restricted Stock Unitsderivative | -7,363 | $0.00 | $0 | 39,277 | Nov 20, 2025 |
Questions about Ming Yan
Answered from the filings on this page, as of the latest one.
Is Ming Yan buying or selling?
Not in the last 12 months. Ming Yan's latest open-market trade on SEC Form 4 was sold $189k of CTKB on Dec 19, 2023.
How did Ming Yan's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Ming Yan has 0.
Where does Ming Yan file Form 4?
Ming Yan has filed Form 4 at CTKB (Cytek Biosciences, Inc.) as Chief Technology Officer. A Form 4 is required of officers, directors and holders of more than 10% of a share class within two business days of a trade.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.