v3.26.1
Condensed Consolidated Statements of Changes in Equity - USD ($)
$ in Thousands
Total
Common Stock Class A
Common Stock Class B
Common Stock
Common Stock Class A
Common Stock
Common Stock Class B
Additional Paid- in Capital
Retained Earnings
Statutory Surplus Reserve
Accumulated Other Comprehensive (Loss) Income
Non-controlling Interests
Beginning balance (in shares) at Dec. 31, 2024       57,938,885 5,021,811          
Beginning balance at Dec. 31, 2024 $ 1,095,906     $ 6 $ 1 $ 677,476 $ 260,000 $ 30,514 $ (63,372) $ 191,281
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 61,283           50,140     11,143
Unrealized gain on available-for-sale investments, net of tax 0                  
Repurchase of shares held by ACM Shanghai (6,988)         (4,759)       (2,229)
Foreign currency translation adjustment 5,655               4,591 1,064
Exercise of stock options (in shares)       1,158,086            
Exercise of stock options 23,582         15,266       8,316
Stock-based compensation 19,587         16,587       3,000
Capita contribution by non-controlling shareholder/ Sale of ACM Shanghai's shares, net of tax 242                 242
ACM Shanghai dividend (7,578)                 (7,578)
Ending balance (in shares) at Jun. 30, 2025       59,096,971 5,021,811          
Ending balance at Jun. 30, 2025 1,191,689     $ 6 $ 1 704,570 310,140 30,514 (58,781) 205,239
Beginning balance (in shares) at Mar. 31, 2025       58,832,925 5,021,811          
Beginning balance at Mar. 31, 2025 1,155,353     $ 6 $ 1 700,191 280,380 30,514 (61,946) 206,207
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 36,270           29,760     6,510
Unrealized gain on available-for-sale investments, net of tax 0                  
Repurchase of shares held by ACM Shanghai (6,988)         (4,759)       (2,229)
Foreign currency translation adjustment 3,905               3,165 740
Exercise of stock options (in shares)       264,046            
Exercise of stock options 853         853        
Stock-based compensation 9,770         8,285       1,485
Capita contribution by non-controlling shareholder/ Sale of ACM Shanghai's shares, net of tax 104                 104
ACM Shanghai dividend (7,578)                 (7,578)
Ending balance (in shares) at Jun. 30, 2025       59,096,971 5,021,811          
Ending balance at Jun. 30, 2025 1,191,689     $ 6 $ 1 704,570 310,140 30,514 (58,781) 205,239
Beginning balance (in shares) at Dec. 31, 2025   60,590,017 5,021,811 60,590,017 5,021,811          
Beginning balance at Dec. 31, 2025 1,930,509     $ 6 $ 1 1,115,504 350,428 34,164 (35,740) 466,146
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 148,485           106,291     42,194
Unrealized gain on available-for-sale investments, net of tax 675               493 182
Proceeds from issuance of ACM Research shares, net of issuance costs (in shares)       2,884,615            
Proceeds from issuance of ACM Research shares, net of issuance costs 148,389         148,389        
Foreign currency translation adjustment 57,938               42,670 15,268
Exercise of stock options (in shares)       1,146,730            
Exercise of stock options 30,778         18,725       12,053
Stock-based compensation 12,204         10,016       2,188
Capita contribution by non-controlling shareholder/ Sale of ACM Shanghai's shares, net of tax 87,913         69,207       18,706
Conversion of Class B common stock to Class A common stock (in shares)       30,003 (30,003)          
ACM Shanghai dividend (11,768)                 (11,768)
Ending balance (in shares) at Jun. 30, 2026   64,651,365 4,991,808 64,651,365 4,991,808          
Ending balance at Jun. 30, 2026 2,405,123     $ 6 $ 1 1,361,841 456,719 34,164 7,423 544,969
Beginning balance (in shares) at Mar. 31, 2026       61,223,064 4,991,808          
Beginning balance at Mar. 31, 2026 2,083,472     $ 6 $ 1 1,194,786 367,735 34,164 (15,182) 501,962
Increase (Decrease) in Stockholders' Equity [Roll Forward]                    
Net income 122,250           88,984     33,266
Unrealized gain on available-for-sale investments, net of tax 675               493 182
Proceeds from issuance of ACM Research shares, net of issuance costs (in shares)       2,884,615            
Proceeds from issuance of ACM Research shares, net of issuance costs 148,389         148,389        
Foreign currency translation adjustment 30,141               22,112 8,029
Exercise of stock options (in shares)       543,686            
Exercise of stock options 25,381         13,328       12,053
Stock-based compensation 6,583         5,338       1,245
ACM Shanghai dividend (11,768)                 (11,768)
Ending balance (in shares) at Jun. 30, 2026   64,651,365 4,991,808 64,651,365 4,991,808          
Ending balance at Jun. 30, 2026 $ 2,405,123     $ 6 $ 1 $ 1,361,841 $ 456,719 $ 34,164 $ 7,423 $ 544,969