Liu Tracy sold ACM Research ($ACMR) shares on the open market six times over the past year, totaling about $3.8 million, with the most recent sale on March 11, 2026. These sales rank 2,321st among 11,678 individual insiders in our database, where the average is roughly $8.6 million across about 6.4 transactions per insider. Tracy made 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 11, 2026 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | S | Class A Common Stock | 3377 | $48.25 | 110,772.0000 | 68,414,313 | 2.96% | 0.00% |
| March 10, 2026 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Stock Option | 45000 | $0.00 | 15,000.0000 | 68,414,313 | 75.00% | 0.07% |
| March 11, 2026 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Stock Option | 15000 | $0.00 | 0.0000 | 68,414,313 | 100.00% | 0.02% |
| March 10, 2026 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Class A Common Stock | 45000 | $1.00 | 155,772.0000 | 68,414,313 | 40.62% | 0.07% |
| March 10, 2026 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | S | Class A Common Stock | 32216 | $47.06 | 123,556.0000 | 68,414,313 | 20.68% | 0.05% |
| March 10, 2026 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | S | Class A Common Stock | 12784 | $48.19 | 110,772.0000 | 68,414,313 | 10.35% | 0.02% |
| March 11, 2026 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Class A Common Stock | 15000 | $1.00 | 125,772.0000 | 68,414,313 | 13.54% | 0.02% |
| March 11, 2026 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | S | Class A Common Stock | 11623 | $47.81 | 114,149.0000 | 68,414,313 | 9.24% | 0.02% |
| Sept. 17, 2025 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | S | Class A Common Stock | 15000 | $33.00 | 110,772.0000 | 66,237,424 | 11.93% | 0.02% |
| Sept. 17, 2025 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Stock Option | 15000 | $0.00 | 60,000.0000 | 66,237,424 | 20.00% | 0.02% |
| Sept. 17, 2025 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Class A Common Stock | 15000 | $1.00 | 125,772.0000 | 66,237,424 | 13.54% | 0.02% |
| Aug. 12, 2025 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | A | Stock Option | 20000 | $0.00 | 20,000.0000 | 66,237,424 | 9999.99% | 0.03% |
| July 15, 2025 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Class A Common Stock | 15000 | $1.00 | 125,772.0000 | 66,237,424 | 13.54% | 0.02% |
| July 15, 2025 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | S | Class A Common Stock | 15000 | $30.00 | 110,772.0000 | 66,237,424 | 11.93% | 0.02% |
| July 15, 2025 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Stock Option | 15000 | $0.00 | 75,000.0000 | 66,237,424 | 16.67% | 0.02% |
| Aug. 12, 2024 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | A | Stock Option | 20000 | $0.00 | 20,000.0000 | 64,870,543 | 9999.99% | 0.03% |
| Feb. 28, 2024 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | S | Class A Common Stock | 12500 | $25.20 | 110,772.0000 | 64,870,543 | 10.14% | 0.02% |
| Feb. 28, 2024 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Stock Option | 12500 | $0.00 | 19,500.0000 | 64,870,543 | 39.06% | 0.02% |
| Feb. 28, 2024 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Class A Common Stock | 12500 | $5.60 | 123,272.0000 | 64,870,543 | 11.28% | 0.02% |
| Dec. 26, 2023 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Class A Common Stock | 10000 | $5.60 | 120,772.0000 | 65,341,771 | 9.03% | 0.02% |
| Dec. 26, 2023 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Stock Option | 10000 | $0.00 | 32,000.0000 | 65,341,771 | 23.81% | 0.02% |
| Dec. 26, 2023 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | S | Class A Common Stock | 10000 | $20.00 | 110,772.0000 | 65,341,771 | 8.28% | 0.02% |
| Nov. 20, 2023 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Class A Common Stock | 15000 | $7.36 | 51,924.0000 | 65,341,771 | 40.62% | 0.02% |
| Nov. 20, 2023 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | S | Class A Common Stock | 15000 | $17.91 | 36,924.0000 | 65,341,771 | 28.89% | 0.02% |
| Nov. 20, 2023 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | M | Stock Option | 15000 | $0.00 | 0.0000 | 65,341,771 | 100.00% | 0.02% |
| Aug. 10, 2023 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | A | Stock Option | 30000 | $0.00 | 30,000.0000 | 65,341,771 | 50.00% | 0.05% |
| Aug. 10, 2023 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | A | Stock Option | 24000 | $0.00 | 24,000.0000 | 65,341,771 | 50.00% | 0.04% |
| Aug. 10, 2023 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | A | Stock Option | 30000 | $0.00 | 30,000.0000 | 65,341,771 | 50.00% | 0.05% |
| Aug. 10, 2023 | ACM Research, Inc. | $ACMR | Liu Tracy | Not found | A | Stock Option | 24000 | $0.00 | 24,000.0000 | 65,341,771 | 50.00% | 0.04% |