Insider · CIK 0001990397
Yin Yan
Files at BIOE (Bio Essence Corp), MWYN (Marwynn Holdings, Inc.). First filing Oct 11, 2024, latest Nov 21, 2025.
Yin Yan files SEC Form 4 as CEO, director, 10% owner and chair at BIOE (Bio Essence Corp), and also at MWYN (Marwynn Holdings, Inc.). Since Oct 11, 2024, Yin Yan has reported 1 open-market buy worth $2.5M and 2 open-market sells worth $1.4M, the latest filed on Nov 21, 2025.
A track record needs three past buys with six months of prices behind them; Yin Yan has 1, so none is measured yet.
The newest scored trade: sold $906k of MWYN on Nov 19, 2025, filed Nov 21, 2025, scored 69 (notable). In the last 12 months: 0 buys worth $0 and 1 sell worth $906k.
Where the trades landed
Last year at the 2 companies this insider has traded most, with each buy and sell on the bar it happened.
BIOE: Bio Essence Corp
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™
MWYN: Marwynn Holdings, 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 |
|---|---|---|---|---|---|
| 69Notable | MWYNsell Marwynn Holdings, Inc. | $906k 1,777,230 shares | -100% | - | |
| 62Notable | BIOEsell Bio Essence Corp | $455k 323,845 shares | -67% | - | |
| 60Notable | BIOEbuy Bio Essence Corp | $2.5M 5,000,000 shares | +56% | - |
Transactions
Every row this insider has filed, 5 in all, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Nov 19, 2025 | MWYN Marwynn Holdings, Inc. | SOpen-market sale Common Stockindirect: By Spouse | -1,777,230 | $0.51 | $906k | 0 | Nov 21, 2025 |
| Oct 28, 2024 | BIOE Bio Essence Corp | SOpen-market sale Common Stock | -140,000 | $2.48 | $347k | 345,859 | Nov 18, 2024 |
| Oct 29, 2024 | BIOE Bio Essence Corp | SOpen-market sale Common Stock | -40,000 | $0.64 | $26k | 2,561 | Nov 18, 2024 |
| Oct 30, 2024 | BIOE Bio Essence Corp | SOpen-market sale Common Stock | -143,845 | $0.57 | $82k | 82,124 | Nov 18, 2024 |
| Jun 6, 2023 | BIOE Bio Essence Corp | POpen-market purchase Common Stock | +5,000,000 | $0.50 | $2.5M | 14,000,000 | Oct 11, 2024 |
Questions about Yin Yan
Answered from the filings on this page, as of the latest one.
Is Yin Yan buying or selling?
In the last 12 months Yin Yan reported 0 open-market buys worth $0 and 1 open-market sell worth $906k on SEC Form 4; the latest was sold $906k of MWYN on Nov 19, 2025. Grants, option exercises and tax withholding are not counted.
How did Yin Yan's past buys perform?
Not measured yet. InsiderTell needs three past buys with six months of prices to publish a track record, and Yin Yan has 1.
Where does Yin Yan file Form 4?
Yin Yan has filed Form 4 at BIOE (Bio Essence Corp) as Chief Executive Officer; MWYN (Marwynn Holdings, Inc.) as Chairman and CEO. 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.