Yan Yin, Chairman and CEO of Marwynn Holdings ($MWYN), made one open market sale of company shares in the last 365 days, totaling about $906,000. The most recent sale occurred on November 19, 2025. This activity ranks 5,159th among over 11,600 insiders in our database by sale value, below the average of $8.6 million across 6.4 transactions per insider. Yan Yin reported no open market purchases during this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov. 19, 2025 | Marwynn Holdings, Inc. | $MWYN | Yan Yin | Chairman and CEO | S | Common Stock | 1777230 | $0.51 | 5,993,255.0000 | 17,190,561 | 22.87% | 10.34% |
| Oct. 28, 2024 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | S | Common Stock | 140000 | $2.48 | 345,859.2100 | 38,009,000 | 28.81% | 0.37% |
| Oct. 29, 2024 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | S | Common Stock | 40000 | $0.64 | 2,561.2200 | 38,009,000 | 93.98% | 0.11% |
| Oct. 30, 2024 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | S | Common Stock | 143845 | $0.57 | 82,123.9500 | 38,009,000 | 63.66% | 0.38% |
| June 6, 2023 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | P | Common Stock | 5000000 | $0.50 | 14,000,000.0000 | 33,009,000 | 55.56% | 15.15% |
| July 3, 2024 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | S | Common Stock | 100000 | $8.78 | 13,850,000.0000 | 38,009,000 | 0.72% | 0.26% |
| July 5, 2024 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | S | Common Stock | 73965 | $8.94 | 13,776,035.0000 | 38,009,000 | 0.53% | 0.19% |
| July 2, 2024 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | S | Common Stock | 50000 | $7.83 | 13,950,000.0000 | 38,009,000 | 0.36% | 0.13% |
| Sept. 25, 2024 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | S | Common Stock | 50000 | $0.70 | 13,726,035.0000 | 38,009,000 | 0.36% | 0.13% |
| Sept. 26, 2024 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | S | Common Stock | 40000 | $1.67 | 13,686,035.0000 | 38,009,000 | 0.29% | 0.11% |
| Sept. 27, 2024 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | S | Common Stock | 200 | $1.69 | 13,685,835.0000 | 38,009,000 | 0.00% | 0.00% |
| Sept. 30, 2024 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | S | Common stock | 1990 | $2.35 | 13,683,845.0000 | 38,009,000 | 0.01% | 0.01% |
| July 2, 2024 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | S | Common Stock | 50000 | $7.83 | 18,950,000.0000 | 38,009,000 | 0.26% | 0.13% |
| July 3, 2024 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | S | Common Stock | 4065 | $8.96 | 18,945,935.0000 | 38,009,000 | 0.02% | 0.01% |
| July 5, 2024 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | S | Common Stock | 6209 | $9.07 | 18,939,726.0000 | 38,009,000 | 0.03% | 0.02% |
| June 6, 2023 | Bio Essence Corp | $BIOE | Yan Yin | Chief Executive Officer | P | Common Stock | 5000000 | $0.50 | 19,000,000.0000 | 33,009,000 | 35.71% | 15.15% |