Mailing Address 5808 LAKE WASHINGTON BLVD. NE KIRKLAND WA 98033
Business Address 5808 LAKE WASHINGTON BLVD. NE KIRKLAND WA 98033 425-296-9956
MONOLITHIC POWER SYSTEMS INC CIK#: 0001280452 (see all company filings)

SIC: 3674 - SEMICONDUCTORS & RELATED DEVICES
State location: WA | State of Inc.: DE | Fiscal Year End: 1231
(CF Office: 04 Manufacturing)
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Items 1 - 40  0001280452 Filings RSS Feed
Filings Format Description Filing Date File/Film Number
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001437749-25-014522 (34 Act)  Size: 7 MB
2025-05-05 000-51026
25912761
DEFR14A  Documents Revised definitive proxy soliciting materials
Acc-no: 0001437749-25-014184 (34 Act)  Size: 14 KB
2025-05-02 000-51026
25905374
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001437749-25-014082 (34 Act)  Size: 741 KB
2025-05-01 000-51026
25902842
ARS  Documents Annual Report to Security Holders
Acc-no: 0001437749-25-013765 (34 Act)  Size: 1 MB
2025-04-30 000-51026
25893597
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001437749-25-013754 (34 Act)  Size: 1 MB
2025-04-30 000-51026
25893392
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001437749-25-013745 (34 Act)  Size: 4 MB
2025-04-30 000-51026
25893300
PRE 14A  Documents   Interactive Data Other preliminary proxy statements
Acc-no: 0001437749-25-012346 (34 Act)  Size: 3 MB
2025-04-18 000-51026
25850001
SCHEDULE 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001576419-25-000860 (34 Act)  Size: 11 KB
2025-04-17 005-80408
25848823
8-K  Documents   Interactive Data Current report, items 5.03 and 9.01
Acc-no: 0001437749-25-009324 (34 Act)  Size: 474 KB
2025-03-26 000-51026
25772505
8-K  Documents   Interactive Data Current report, items 7.01 and 9.01
Acc-no: 0001437749-25-008519 (34 Act)  Size: 6 MB
2025-03-20 000-51026
25755102
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001437749-25-005903 (34 Act)  Size: 11 MB
2025-03-03 000-51026
25697177
8-K  Documents   Interactive Data Current report, items 2.02, 8.01, and 9.01
Acc-no: 0001437749-25-003024 (34 Act)  Size: 1 MB
2025-02-06 000-51026
25597248
8-K  Documents   Interactive Data Current report, items 8.01 and 9.01
Acc-no: 0001437749-24-037471 (34 Act)  Size: 174 KB
2024-12-13 000-51026
241548255
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000315066-24-002795 (34 Act)  Size: 8 KB
2024-11-12 005-80408
241444860
8-K  Documents   Interactive Data Current report, item 7.01
Acc-no: 0001437749-24-034352 (34 Act)  Size: 156 KB
2024-11-12 000-51026
241443942
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001437749-24-033608 (34 Act)  Size: 8 MB
2024-11-06 000-51026
241430798
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001437749-24-032609 (34 Act)  Size: 957 KB
2024-10-30 000-51026
241410188
8-K  Documents   Interactive Data Current report, item 5.02
Acc-no: 0001437749-24-031789 (34 Act)  Size: 153 KB
2024-10-22 000-51026
241387039
8-K  Documents   Interactive Data Current report, items 8.01 and 9.01
Acc-no: 0001437749-24-029143 (34 Act)  Size: 173 KB
2024-09-13 000-51026
241297651
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001437749-24-024477 (34 Act)  Size: 8 MB
2024-08-02 000-51026
241170843
8-K  Documents   Interactive Data Current report, items 2.02, 8.01, and 9.01
Acc-no: 0001437749-24-024285 (34 Act)  Size: 981 KB
2024-08-01 000-51026
241166429
8-K  Documents   Interactive Data Current report, items 5.07, 8.01, and 9.01
Acc-no: 0001437749-24-020388 (34 Act)  Size: 199 KB
2024-06-14 000-51026
241046082
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001437749-24-019383 (34 Act)  Size: 30 KB
2024-06-06 000-51026
241023769
SD  Documents Specialized disclosure report
Acc-no: 0001437749-24-018685 (34 Act)  Size: 138 KB
2024-05-30 000-51026
241003074
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001437749-24-014648 (34 Act)  Size: 7 MB
2024-05-03 000-51026
24912884
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001437749-24-014156 (34 Act)  Size: 750 KB
2024-05-01 000-51026
24902840
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001437749-24-013659 (34 Act)  Size: 442 KB
2024-04-29 000-51026
24889982
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001437749-24-013657 (34 Act)  Size: 3 MB
2024-04-29 000-51026
24889936
ARS  Documents Annual Report to Security Holders
Acc-no: 0001437749-24-013572 (34 Act)  Size: 1 MB
2024-04-29 000-51026
24888373
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001437749-24-006133 (34 Act)  Size: 11 MB
2024-02-29 000-51026
24704742
SC 13G  Documents Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000080255-24-000687 (34 Act)  Size: 6 KB
2024-02-14 005-80408
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001104659-24-020085 (34 Act)  Size: 13 KB
2024-02-13 005-80408
24627120
SC 13G  Documents Statement of Beneficial Ownership by Certain Investors
Acc-no: 0000315066-24-001347 (34 Act)  Size: 8 KB
2024-02-09 005-80408
24611920
8-K  Documents   Interactive Data Current report, items 2.02, 8.01, and 9.01
Acc-no: 0001437749-24-003353 (34 Act)  Size: 3 MB
2024-02-07 000-51026
24604219
SC 13G/A  Documents [Amend] Statement of Beneficial Ownership by Certain Investors
Acc-no: 0001086364-24-002047 (34 Act)  Size: 13 KB
2024-01-24 005-80408
24554606
8-K  Documents   Interactive Data Current report, items 8.01 and 9.01
Acc-no: 0001437749-23-034560 (34 Act)  Size: 170 KB
2023-12-15 000-51026
231490195
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001437749-23-030929 (34 Act)  Size: 8 MB
2023-11-08 000-51026
231387687
8-K  Documents   Interactive Data Current report, items 2.02, 8.01, and 9.01
Acc-no: 0001437749-23-029394 (34 Act)  Size: 1 MB
2023-10-30 000-51026
231360140
8-K  Documents   Interactive Data Current report, items 8.01 and 9.01
Acc-no: 0001437749-23-026015 (34 Act)  Size: 170 KB
2023-09-15 000-51026
231258617
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001437749-23-022148 (34 Act)  Size: 8 MB
2023-08-04 000-51026
231143920