Feng Lisa sold ACM Research ($ACMR) shares on the open market eight times over the last year, for a total of $3.25 million. Her most recent sale occurred on March 6, 2026. Among 11,678 insiders with open market sales, her activity ranks 2,582nd by value, below the average of $8.6 million per insider and slightly above the average of 6.4 transactions. She made no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 5, 2026 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Class A Common Stock | 15000 | $4.55 | 65,001.0000 | 68,414,313 | 30.00% | 0.02% |
| March 6, 2026 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Stock Option | 15000 | $0.00 | 0.0000 | 68,414,313 | 100.00% | 0.02% |
| March 5, 2026 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Stock Option | 15000 | $0.00 | 0.0000 | 68,414,313 | 100.00% | 0.02% |
| March 6, 2026 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 200 | $46.58 | 50,001.0000 | 68,414,313 | 0.40% | 0.00% |
| March 6, 2026 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 14800 | $46.07 | 50,201.0000 | 68,414,313 | 22.77% | 0.02% |
| March 6, 2026 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Class A Common Stock | 15000 | $4.55 | 65,001.0000 | 68,414,313 | 30.00% | 0.02% |
| March 5, 2026 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 6950 | $50.24 | 50,001.0000 | 68,414,313 | 12.20% | 0.01% |
| March 5, 2026 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 8050 | $49.81 | 56,951.0000 | 68,414,313 | 12.38% | 0.01% |
| Nov. 13, 2025 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Stock Option | 15000 | $0.00 | 0.0000 | 68,414,313 | 100.00% | 0.02% |
| Nov. 12, 2025 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Class A Common Stock | 15000 | $5.60 | 65,001.0000 | 68,414,313 | 30.00% | 0.02% |
| Nov. 12, 2025 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 15000 | $32.76 | 50,001.0000 | 68,414,313 | 23.08% | 0.02% |
| Nov. 13, 2025 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Class A Common Stock | 15000 | $5.60 | 65,001.0000 | 68,414,313 | 30.00% | 0.02% |
| Nov. 13, 2025 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 15000 | $33.77 | 50,001.0000 | 68,414,313 | 23.08% | 0.02% |
| Nov. 12, 2025 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Stock Option | 15000 | $0.00 | 15,000.0000 | 68,414,313 | 50.00% | 0.02% |
| July 7, 2025 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Class A Common Stock | 15000 | $5.60 | 65,001.0000 | 66,237,424 | 30.00% | 0.02% |
| July 7, 2025 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 15000 | $28.00 | 50,001.0000 | 66,237,424 | 23.08% | 0.02% |
| July 7, 2025 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Stock Option | 15000 | $0.00 | 30,000.0000 | 66,237,424 | 33.33% | 0.02% |
| June 24, 2025 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Class A Common Stock | 15000 | $5.60 | 65,001.0000 | 66,237,424 | 30.00% | 0.02% |
| June 24, 2025 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Stock Option | 15000 | $0.00 | 45,000.0000 | 66,237,424 | 25.00% | 0.02% |
| June 24, 2025 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 15000 | $26.00 | 50,001.0000 | 66,237,424 | 23.08% | 0.02% |
| Feb. 28, 2024 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Stock Option | 7500 | $0.00 | 60,000.0000 | 64,870,543 | 11.11% | 0.01% |
| Feb. 28, 2024 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Class A Common Stock | 7500 | $5.60 | 57,501.0000 | 64,870,543 | 15.00% | 0.01% |
| Feb. 28, 2024 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 7500 | $25.20 | 50,001.0000 | 64,870,543 | 13.04% | 0.01% |
| Dec. 26, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 7500 | $20.00 | 50,001.0000 | 65,341,771 | 13.04% | 0.01% |
| Dec. 26, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Class A Common Stock | 7500 | $5.60 | 57,501.0000 | 65,341,771 | 15.00% | 0.01% |
| Dec. 26, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Stock Option | 7500 | $0.00 | 67,500.0000 | 65,341,771 | 10.00% | 0.01% |
| Aug. 10, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | A | Stock Option | 100000 | $0.00 | 100,000.0000 | 65,341,771 | 50.00% | 0.15% |
| Aug. 10, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | A | Stock Option | 100000 | $0.00 | 100,000.0000 | 65,341,771 | 50.00% | 0.15% |
| July 3, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Class A Common Stock | 22500 | $1.77 | 72,501.0000 | 65,341,771 | 45.00% | 0.03% |
| July 3, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Stock Option | 22500 | $0.00 | 0.0000 | 65,341,771 | 100.00% | 0.03% |
| July 3, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 22500 | $15.00 | 50,001.0000 | 65,341,771 | 31.03% | 0.03% |
| March 9, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 9144 | $12.44 | 51,111.0000 | 65,341,771 | 15.18% | 0.01% |
| March 9, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 9546 | $12.33 | 60,255.0000 | 65,341,771 | 13.68% | 0.01% |
| March 9, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Class A Common Stock | 22500 | $1.77 | 72,501.0000 | 65,341,771 | 45.00% | 0.03% |
| March 9, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 2700 | $12.21 | 69,801.0000 | 65,341,771 | 3.72% | 0.00% |
| March 9, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | M | Stock Option | 22500 | $0.00 | 0.0000 | 65,341,771 | 100.00% | 0.03% |
| March 9, 2023 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | S | Class A Common Stock | 1110 | $12.55 | 50,001.0000 | 65,341,771 | 2.17% | 0.00% |
| Dec. 31, 2022 | ACM Research, Inc. | $ACMR | Feng Lisa | See remarks | A | Stock Option | 22500 | $0.00 | 22,500.0000 | 0 | 9999.99% | 0.00% |