Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| ACM Research, Inc.ACMR · Entity 3926 | Director | August 12, 2026 | August 27, 2026 |
| AXT INCAXTI · Entity 4105 | Director | June 17, 2026 | June 24, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
ACM Research, Inc.
Report date August 12, 2026 · Filed August 27, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Stock OptionSEC Table II · derivative / convertible security · Conversion / exercise price $81.26 · Expires 2036-08-11 | Direct | 6,400 |
Reported balance
After 2026-08-12 transaction · row 1
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 1 · 2026-08-12 · Grant · Acquired 6,400 · Balance 6,400 F1: The option will vest and become exercisable immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service through the vesting date. |
| Restricted Stock UnitsSEC Table II · derivative / convertible security · Conversion / exercise price $96.13 | Direct | 728 |
Reported balance
After 2026-08-12 transaction · row 2
Instrument identity requires review; Table II rows are not merged.
1 source rowRow 2 · 2026-08-12 · Grant · Acquired 728 · Balance 728 F2: The price per restricted stock unit is based on the average closing market price of the Issuer's common stock for the 30 trading days preceding the grant day. F3: The restricted stock units should be vested immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service. |
Filing footnotes · ownership attribution and instrument terms
F1: The option will vest and become exercisable immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service through the vesting date.
F2: The price per restricted stock unit is based on the average closing market price of the Issuer's common stock for the 30 trading days preceding the grant day.
F3: The restricted stock units should be vested immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service.
AXT INC
Report date June 17, 2026 · Filed June 24, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 2,500 |
Reported balance
Holding disclosure · report date 2026-06-17 · row 1
Holding and transaction disclosures are not merged.
1 source rowRow 1 · Balance 2,500 F1: Represents an initial award of restricted stock and vests on May 14, 2027, subject to the Reporting Person's continuous service through the vesting date. |
| Common StockSEC Table I · non-derivative | Direct | 726 |
Reported balance
Holding disclosure · report date 2026-06-17 · row 2
Holding and transaction disclosures are not merged.
1 source rowRow 2 · Balance 726 F2: Represents a prorated annual equity grant of common stock and vests on May 14, 2027, subject to the Reporting Person's continuous service through the vesting date. |
Filing footnotes · ownership attribution and instrument terms
F1: Represents an initial award of restricted stock and vests on May 14, 2027, subject to the Reporting Person's continuous service through the vesting date.
F2: Represents a prorated annual equity grant of common stock and vests on May 14, 2027, subject to the Reporting Person's continuous service through the vesting date.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| August 12, 2026 Filed Aug 27, 2026 01:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | GrantRestricted Stock Units · Derivative | 728 | $0.00 Strike: $96.13 | $0.00 |
DisclosureSEC source: 0001140361-26-034527 · form4.xml · derivative · entry 2 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 728 Underlying: Class A Common Stock · 728 shares Expires not disclosed F2 · derivative.exercise_price: The price per restricted stock unit is based on the average closing market price of the Issuer's common stock for the 30 trading days preceding the grant day. F3 · derivative.exercise_date: The restricted stock units should be vested immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service. F3 · derivative.expiration_date: The restricted stock units should be vested immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service. Read SEC document |
| August 12, 2026 Filed Aug 27, 2026 01:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | GrantStock Option · Derivative | 6,400 | $0.00 Strike: $81.26 | $0.00 |
DisclosureSEC source: 0001140361-26-034527 · form4.xml · derivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 6,400 Underlying: Class A Common Stock · 6,400 shares Expires 2036-08-11 F1 · derivative.exercise_date: The option will vest and become exercisable immediately prior to the 2027 annual meeting of stockholders of the issuer, subject to continued service through the vesting date. Read SEC document |
| March 11, 2026 Filed Mar 12, 2026 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionStock Option · Derivative | 15,000 | $0.00 Strike: $1.00 | $0.00 |
DisclosureSEC source: 0001140361-26-009239 · form4.xml · derivative · entry 8 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 0 Underlying: Class A Common Stock · 15,000 shares Expires 2026-12-27 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F6 · derivative.exercise_date: The option is fully vested and exercisable. Read SEC document |
| March 11, 2026 Filed Mar 12, 2026 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | SaleClass A Common Stock | 3,377 | $48.25 | $162,940.25 |
DisclosureSEC source: 0001140361-26-009239 · form4.xml · nonDerivative · entry 6 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 110,772 F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 4, 2025. F5 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $48.13 to $48.44, inclusive. Read SEC document |
| March 11, 2026 Filed Mar 12, 2026 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | SaleClass A Common Stock | 11,623 | $47.81 | $555,695.63 |
DisclosureSEC source: 0001140361-26-009239 · form4.xml · nonDerivative · entry 5 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 114,149 F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 4, 2025. F4 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $47.13 to $48.12, inclusive. Read SEC document |
| March 11, 2026 Filed Mar 12, 2026 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionClass A Common Stock | 15,000 | $1.00 | $15,000.00 |
DisclosureSEC source: 0001140361-26-009239 · form4.xml · nonDerivative · entry 4 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 125,772 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| March 10, 2026 Filed Mar 12, 2026 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionStock Option · Derivative | 45,000 | $0.00 Strike: $1.00 | $0.00 |
DisclosureSEC source: 0001140361-26-009239 · form4.xml · derivative · entry 7 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 15,000 Underlying: Class A Common Stock · 45,000 shares Expires 2026-12-27 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F6 · derivative.exercise_date: The option is fully vested and exercisable. Read SEC document |
| March 10, 2026 Filed Mar 12, 2026 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | SaleClass A Common Stock | 12,784 | $48.19 | $616,060.96 |
DisclosureSEC source: 0001140361-26-009239 · form4.xml · nonDerivative · entry 3 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 110,772 F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 4, 2025. F3 · price: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $47.70 to $48.50, inclusive. Read SEC document |
| March 10, 2026 Filed Mar 12, 2026 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | SaleClass A Common Stock | 32,216 | $47.06 | $1,516,084.96 |
DisclosureSEC source: 0001140361-26-009239 · form4.xml · nonDerivative · entry 2 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 123,556 F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 4, 2025. F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $46.67 to $47.51, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2), (3), (4), and (5) to this Form 4. Read SEC document |
| March 10, 2026 Filed Mar 12, 2026 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionClass A Common Stock | 45,000 | $1.00 | $45,000.00 |
DisclosureSEC source: 0001140361-26-009239 · form4.xml · nonDerivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 155,772 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document |
| September 17, 2025 Filed Sep 19, 2025 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionStock Option · Derivative | 15,000 | $0.00 Strike: $1.00 | $0.00 |
DisclosureSEC source: 0001140361-25-035582 · form4.xml · derivative · entry 3 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 60,000 Underlying: Class A Common Stock · 15,000 shares Expires 2026-12-27 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On September 17, 2025, the reporting person exercised a previously issued stock option to purchase 15,000 shares of Class A Common Stock of the Issuer. F3 · derivative.exercise_date: The option is fully vested and exercisable. Read SEC document |
| September 17, 2025 Filed Sep 19, 2025 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | SaleClass A Common Stock | 15,000 | $33.00 | $495,000.00 |
DisclosureSEC source: 0001140361-25-035582 · form4.xml · nonDerivative · entry 2 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 110,772 F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2025. Read SEC document |
| September 17, 2025 Filed Sep 19, 2025 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionClass A Common Stock | 15,000 | $1.00 | $15,000.00 |
DisclosureSEC source: 0001140361-25-035582 · form4.xml · nonDerivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 125,772 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On September 17, 2025, the reporting person exercised a previously issued stock option to purchase 15,000 shares of Class A Common Stock of the Issuer. Read SEC document |
| August 12, 2025 Filed Aug 14, 2025 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | GrantStock Option · Derivative | 20,000 | $0.00 Strike: $24.93 | $0.00 |
DisclosureSEC source: 0001140361-25-031256 · form4.xml · derivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,000 Underlying: Class A Common Stock · 20,000 shares Expires 2035-08-11 F1 · derivative.exercise_date: The option will vest and become exercisable immediately prior to the 2026 annual meeting of stockholders of the issuer, subject to continued service through the vesting date. Read SEC document |
| July 15, 2025 Filed Jul 17, 2025 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionStock Option · Derivative | 15,000 | $0.00 Strike: $1.00 | $0.00 |
DisclosureSEC source: 0001140361-25-026241 · form4.xml · derivative · entry 3 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 75,000 Underlying: Class A Common Stock · 15,000 shares Expires 2026-12-27 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On July 15, 2025, the reporting person exercised a previously issued stock option to purchase 15,000 shares of Class A Common Stock of the Issuer. F3 · derivative.exercise_date: The option is fully vested and exercisable. Read SEC document |
| July 15, 2025 Filed Jul 17, 2025 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | SaleClass A Common Stock | 15,000 | $30.00 | $450,000.00 |
DisclosureSEC source: 0001140361-25-026241 · form4.xml · nonDerivative · entry 2 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 110,772 F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2025. Read SEC document |
| July 15, 2025 Filed Jul 17, 2025 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionClass A Common Stock | 15,000 | $1.00 | $15,000.00 |
DisclosureSEC source: 0001140361-25-026241 · form4.xml · nonDerivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 125,772 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On July 15, 2025, the reporting person exercised a previously issued stock option to purchase 15,000 shares of Class A Common Stock of the Issuer. Read SEC document |
| August 12, 2024 Filed Aug 21, 2024 01:00 UTC | ACM Research, Inc. ACMR · Entity 3926 | GrantStock Option · Derivative | 20,000 | $0.00 Strike: $18.89 | $0.00 |
DisclosureSEC source: 0001140361-24-037996 · form4.xml · derivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,000 Underlying: Class A Common Stock · 20,000 shares Expires 2034-08-11 F1 · derivative.exercise_date: The option will vest and become exercisable immediately prior to the 2025 annual meeting of stockholders of the issuer, subject to continued service through the vesting date. Read SEC document |
| February 28, 2024 Filed Mar 2, 2024 02:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionStock Option · Derivative | 12,500 | $0.00 Strike: $5.60 | $0.00 |
DisclosureSEC source: 0001140361-24-010869 · form4.xml · derivative · entry 3 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 19,500 Underlying: Class A Common Stock · 12,500 shares Expires 2029-04-22 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On February 28, 2024, the reporting person exercised a previously issued stock option to purchase 12,500 shares of Class A Common Stock of the Issuer. F3 · derivative.exercise_date: The option is fully vested and exercisable. Read SEC document |
| February 28, 2024 Filed Mar 2, 2024 02:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | SaleClass A Common Stock | 12,500 | $25.20 | $315,000.00 |
DisclosureSEC source: 0001140361-24-010869 · form4.xml · nonDerivative · entry 2 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 110,772 F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 21, 2023. Read SEC document |
| February 28, 2024 Filed Mar 2, 2024 02:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionClass A Common Stock | 12,500 | $5.60 | $70,000.00 |
DisclosureSEC source: 0001140361-24-010869 · form4.xml · nonDerivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 123,272 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On February 28, 2024, the reporting person exercised a previously issued stock option to purchase 12,500 shares of Class A Common Stock of the Issuer. Read SEC document |
| December 26, 2023 Filed Dec 29, 2023 02:02 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionStock Option · Derivative | 10,000 | $0.00 Strike: $5.60 | $0.00 |
DisclosureSEC source: 0001140361-23-059932 · form4.xml · derivative · entry 3 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 32,000 Underlying: Class A Common Stock · 10,000 shares Expires 2029-04-22 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On December 26, 2023, the reporting person exercised a previously issued stock option to purchase 10,000 shares of Class A Common Stock of the Issuer. F3 · derivative.exercise_date: The option is fully vested and exercisable. Read SEC document |
| December 26, 2023 Filed Dec 29, 2023 02:02 UTC | ACM Research, Inc. ACMR · Entity 3926 | SaleClass A Common Stock | 10,000 | $20.00 | $200,000.00 |
DisclosureSEC source: 0001140361-23-059932 · form4.xml · nonDerivative · entry 2 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 110,772 F2 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 21, 2023. Read SEC document |
| December 26, 2023 Filed Dec 29, 2023 02:02 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionClass A Common Stock | 10,000 | $5.60 | $56,000.00 |
DisclosureSEC source: 0001140361-23-059932 · form4.xml · nonDerivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 120,772 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On December 26, 2023, the reporting person exercised a previously issued stock option to purchase 10,000 shares of Class A Common Stock of the Issuer. Read SEC document |
| November 20, 2023 Filed Nov 22, 2023 21:15 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionStock Option · Derivative | 15,000 | $0.00 Strike: $7.36 | $0.00 |
DisclosureSEC source: 0001140361-23-054444 · form4.xml · derivative · entry 3 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 0 Underlying: Class A Common Stock · 15,000 shares Expires 2030-03-19 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On November 20, 2023, the reporting person exercised a previously issued stock option to purchase 15,000 shares of Class A Common Stock of the Issuer. F4 · derivative.exercise_date: The option is fully vested and exercisable. Read SEC document |
| November 20, 2023 Filed Nov 22, 2023 21:15 UTC | ACM Research, Inc. ACMR · Entity 3926 | SaleClass A Common Stock | 15,000 | $17.91 | $268,650.00 |
DisclosureSEC source: 0001140361-23-054444 · form4.xml · nonDerivative · entry 2 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 36,924 F2 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 21, 2023. F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.68 to $18.09, inclusive. Read SEC document |
| November 20, 2023 Filed Nov 22, 2023 21:15 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionClass A Common Stock | 15,000 | $7.36 | $110,400.00 |
DisclosureSEC source: 0001140361-23-054444 · form4.xml · nonDerivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Plan reported Ownership: Direct Disclosed balance after: 51,924 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On November 20, 2023, the reporting person exercised a previously issued stock option to purchase 15,000 shares of Class A Common Stock of the Issuer. Read SEC document |
| August 10, 2023 Filed Aug 14, 2023 21:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | GrantStock Option · Derivative | 24,000 | $0.00 Strike: $13.24 | $0.00 |
DisclosureSEC source: 0001140361-23-039741 · form4.xml · derivative · entry 2 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 24,000 Underlying: Class A Common Stock · 24,000 shares Expires 2033-08-09 F2 · derivative.exercise_date: The option will vest and become exercisable immediately prior to the 2024 annual meeting of stockholders of the issuer, subject to continued service through the vesting date. Read SEC document |
| August 10, 2023 Filed Aug 14, 2023 21:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | GrantStock Option · Derivative | 30,000 | $0.00 Strike: $13.24 | $0.00 |
DisclosureSEC source: 0001140361-23-039741 · form4.xml · derivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 30,000 Underlying: Class A Common Stock · 30,000 shares Expires 2033-08-09 F1 · derivative.exercise_date: The option will vest and become exercisable as to 7,500 shares on August 10, 2024 and the remaining 22,500 shares will vest and become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date. Read SEC document |
| August 10, 2023 Filed Aug 22, 2023 01:19 UTC Amendment | ACM Research, Inc. ACMR · Entity 3926 | GrantStock Option · Derivative | 24,000 | $0.00 Strike: $13.89 | $0.00 |
DisclosureSEC source: 0001140361-23-040766 · form4.xml · derivative · entry 2 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 24,000 Underlying: Class A Common Stock · 24,000 shares Expires 2033-08-09 F1 · derivative.exercise_price: This Form 4 amendment has been filed solely to correct the exercise price of the stock option to purchase shares of Class A Common Stock of the Issuer reported in a Form 4 filed on August 14, 2023 (the "Form 4"). The exercise price was inadvertently stated as $13.24 in the Form 4. The exercise price should have been stated as $13.89 in the Form 4. F3 · derivative.exercise_date: The option will vest and become exercisable immediately prior to the 2024 annual meeting of stockholders of the issuer, subject to continued service through the vesting date. Read SEC document |
| August 10, 2023 Filed Aug 22, 2023 01:19 UTC Amendment | ACM Research, Inc. ACMR · Entity 3926 | GrantStock Option · Derivative | 30,000 | $0.00 Strike: $13.89 | $0.00 |
DisclosureSEC source: 0001140361-23-040766 · form4.xml · derivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 30,000 Underlying: Class A Common Stock · 30,000 shares Expires 2033-08-09 F1 · derivative.exercise_price: This Form 4 amendment has been filed solely to correct the exercise price of the stock option to purchase shares of Class A Common Stock of the Issuer reported in a Form 4 filed on August 14, 2023 (the "Form 4"). The exercise price was inadvertently stated as $13.24 in the Form 4. The exercise price should have been stated as $13.89 in the Form 4. F2 · derivative.exercise_date: The option will vest and become exercisable as to 7,500 shares on August 10, 2024 and the remaining 22,500 shares will vest and become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date. Read SEC document |
| June 30, 2022 Filed Jul 5, 2022 21:31 UTC | ACM Research, Inc. ACMR · Entity 3926 | GrantStock Option · Derivative | 24,000 | $0.00 Strike: $16.83 | $0.00 |
DisclosureSEC source: 0001140361-22-025086 · form4.xml · derivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 24,000 Underlying: Class A Common Stock · 24,000 shares Expires 2032-06-29 F1 · derivative.exercise_date: The option will vest and become exercisable immediately prior to the 2023 annual meeting of stockholders of the issuer, subject to continued service through the vesting date. Read SEC document |
| February 22, 2021 Filed Mar 3, 2021 22:31 UTC | ACM Research, Inc. ACMR · Entity 3926 | GrantStock Option · Derivative | 5,000 | $0.00 Strike: $119.98 | $0.00 |
DisclosureSEC source: 0001140361-21-007226 · form4.xml · derivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,000 Underlying: Class A Common Stock · 5,000 shares Expires 2031-02-21 F1 · derivative.exercise_date: The option will vest and become exercisable immediately prior to the 2022 Annual Meeting of Stockholders of the Issuer, subject to continued service through the vesting date. Read SEC document |
| February 22, 2021 Filed Mar 6, 2021 02:46 UTC Amendment | ACM Research, Inc. ACMR · Entity 3926 | GrantStock Option · Derivative | 5,000 | $0.00 Strike: $111.98 | $0.00 |
DisclosureSEC source: 0001140361-21-007577 · form4.xml · derivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,000 Underlying: Class A Common Stock · 5,000 shares Expires 2031-02-21 F1 · derivative.exercise_price: This Form 4 amendment has been filed solely to correct the exercise price of a previously issued stock option to purchase shares of Class A Common Stock of the Issuer reported in a Form 4 filed on March 3, 2021 (the "Form 4"). The exercise price was inadvertently stated as $119.98 in the Form 4. The exercise price should have been stated as $111.98 in the Form 4. F2 · derivative.exercise_date: The option will vest and become exercisable immediately prior to the 2022 Annual Meeting of Stockholders of the Issuer, subject to continued service through the vesting date. Read SEC document |
| February 12, 2021 Filed Feb 16, 2021 23:05 UTC | ACM Research, Inc. ACMR · Entity 3926 | SaleClass A Common Stock | 2,000 | $120.00 | $240,000.00 |
DisclosureSEC source: 0001140361-21-005068 · form4.xml · nonDerivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 36,924 F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. Read SEC document |
| February 10, 2021 Filed Feb 11, 2021 22:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | SaleClass A Common Stock | 1,600 | $110.00 | $176,000.00 |
DisclosureSEC source: 0001140361-21-004424 · form4.xml · nonDerivative · entry 2 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 38,924 F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. Read SEC document |
| February 09, 2021 Filed Feb 11, 2021 22:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | SaleClass A Common Stock | 400 | $110.00 | $44,000.00 |
DisclosureSEC source: 0001140361-21-004424 · form4.xml · nonDerivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 40,524 F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. Read SEC document |
| January 06, 2021 Filed Jan 8, 2021 22:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | SaleClass A Common Stock | 2,000 | $100.00 | $200,000.00 |
DisclosureSEC source: 0001140361-21-000718 · form4.xml · nonDerivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 40,924 F1 · kind: The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person. Read SEC document |
| September 10, 2020 Filed Sep 11, 2020 21:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionStock Option · Derivative | 6,000 | $0.00 Strike: $16.81 | $0.00 |
DisclosureSEC source: 0001140361-20-020280 · form4.xml · derivative · entry 2 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 14,000 Underlying: Class A Common Stock · 6,000 shares Expires 2029-04-22 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On September 10, 2020, the reporting person exercised a previously issued stock option to purchase 6,000 shares of Class A Common Stock of the Issuer. F2 · derivative.exercise_date: The option vested and became exercisable as to 5,000 shares on April 23, 2020 and the remaining 15,000 shares vest and become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date. Read SEC document |
| September 10, 2020 Filed Sep 11, 2020 21:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionClass A Common Stock | 6,000 | $16.81 | $100,860.00 |
DisclosureSEC source: 0001140361-20-020280 · form4.xml · nonDerivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 42,924 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On September 10, 2020, the reporting person exercised a previously issued stock option to purchase 6,000 shares of Class A Common Stock of the Issuer. Read SEC document |
| March 20, 2020 Filed Mar 25, 2020 01:20 UTC | ACM Research, Inc. ACMR · Entity 3926 | GrantStock Option · Derivative | 5,000 | $0.00 Strike: $22.07 | $0.00 |
DisclosureSEC source: 0001140361-20-006755 · form4.xml · derivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 5,000 Underlying: Class A Common Stock · 5,000 shares Expires 2030-03-19 F1 · derivative.exercise_date: The option will vest and become exercisable immediately prior to the 2021 Annual Meeting of Stockholders of the Issuer, subject to continued service through the vesting date. Read SEC document |
| March 18, 2020 Filed Mar 20, 2020 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionStock Option · Derivative | 20,000 | $0.00 Strike: $3.00 | $0.00 |
DisclosureSEC source: 0001140361-20-006447 · form4.xml · derivative · entry 2 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 30,000 Underlying: Class A Common Stock · 20,000 shares Expires 2026-12-27 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On March 18, 2020, the reporting person exercised previously issued stock options to purchase 20,000 shares of Class A Common Stock of the Issuer. F2 · derivative.exercise_date: The option vested and became exercisable as to 12,500 shares on September 29, 2017 and the remaining 37,500 shares vest and become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date. Read SEC document |
| March 18, 2020 Filed Mar 20, 2020 20:30 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionClass A Common Stock | 20,000 | $3.00 | $60,000.00 |
DisclosureSEC source: 0001140361-20-006447 · form4.xml · nonDerivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 36,924 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On March 18, 2020, the reporting person exercised previously issued stock options to purchase 20,000 shares of Class A Common Stock of the Issuer. Read SEC document |
| August 23, 2019 Filed Aug 28, 2019 00:42 UTC | ACM Research, Inc. ACMR · Entity 3926 | Disposition to issuerClass A Common Stock | 2,143 | $13.20 | $28,276.89 |
DisclosureSEC source: 0001654954-19-010061 · section16.xml · nonDerivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 16,924 F1 · price: In connection with a public offering of Class A Common Stock by the Issuer, the reporting person and certain other stockholders entered into an Equity Purchase Agreement dated August 4, 2019 pursuant to which the reporting person and such stockholders agreed to sell, and the Issuer agreed to purchase, shares of the Issuer's Common Stock funded by the net proceeds, if any, from the Issuer's sale of Class A Common Stock pursuant to an exercise of the underwriters' over-allotment option. The transaction being reported relates to the reporting person's sale under the Equity Purchase Agreement. The obligations of the parties to the Equity Purchase Agreement became fixed and irrevocable as of the transaction date, which is the date of the closing of the underwriters' over-allotment option. Read SEC document |
| April 23, 2019 Filed Apr 26, 2019 00:03 UTC | ACM Research, Inc. ACMR · Entity 3926 | GrantStock Options · Derivative | 20,000 | $0.00 Strike: $16.81 | $0.00 |
DisclosureSEC source: 0001654954-19-004824 · section16.xml · derivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 20,000 Underlying: Class A Common Stock · 20,000 shares Expires 2029-04-22 F1 · derivative.exercise_date: The option will vest and become exercisable as to 5,000 shares on April 23, 2020 and the remaining 15,000 shares will vest and become exercisable in equal monthly installments over the following 36 months, subject to continued service through each vesting date. Read SEC document |
| June 28, 2018 Filed Jun 29, 2018 20:35 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionStock Option · Derivative | 16,667 | $0.00 Strike: $3.00 | $0.00 |
DisclosureSEC source: 0001654954-18-007186 · section16.xml · derivative · entry 2 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Class A Common Stock · 16,667 shares Expires 2026-12-27 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On June 28, 2018, the reporting person exercised previously issued stock options to purchase 16,667 shares of Class A Common Stock of the Issuer. F2 · derivative.exercise_date: The option was fully vested and exercisable. Read SEC document |
| June 28, 2018 Filed Jun 29, 2018 20:35 UTC | ACM Research, Inc. ACMR · Entity 3926 | Exercise / conversionClass A Common Stock | 16,667 | $3.00 | $50,001.00 |
DisclosureSEC source: 0001654954-18-007186 · section16.xml · nonDerivative · entry 1 Liu Tracy · CIK 0001721299 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 19,067 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · kind: On June 28, 2018, the reporting person exercised previously issued stock options to purchase 16,667 shares of Class A Common Stock of the Issuer. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.