Monolithic Power Systems

MPWR · NASDAQ · Semiconductors

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Everything reported about this company, newest first. Each line shows the dates that matter for its source.

September 2026

Insider trade · Traded Sep 28, 2026 · Filed Sep 30, 2026
CEO sold ~$14.8M of MPWR shares in the open market Source
Insider trade · Traded Sep 28, 2026 · Filed Sep 30, 2026
CEO sold ~$8.54M of MPWR shares in the open market Source
Insider trade · Traded Sep 28, 2026 · Filed Sep 30, 2026
CEO sold ~$7.77M of MPWR shares in the open market Source
Insider trade · Traded Sep 28, 2026 · Filed Sep 30, 2026
CEO sold ~$3.95M of MPWR shares in the open market Source
Insider trade · Traded Sep 28, 2026 · Filed Sep 30, 2026
CEO sold ~$2.82M of MPWR shares in the open market Source
Insider trade · Traded Sep 28, 2026 · Filed Sep 30, 2026
CEO sold ~$1.48M of MPWR shares in the open market Source
Insider trade · Traded Sep 28, 2026 · Filed Sep 30, 2026
CEO sold ~$789K of MPWR shares in the open market Source
Insider trade · Traded Sep 28, 2026 · Filed Sep 30, 2026
CEO sold ~$176K of MPWR shares in the open market Source
Planned sale · Planned for Sep 28, 2026 · Notice filed Sep 28, 2026
Officer filed to sell about $40.3M of MPWR stock Source

August 2026

Insider trade · Traded Aug 24, 2026 · Filed Aug 26, 2026
CFO sold ~$42K of MPWR shares in the open market Source
Insider trade · Traded Aug 24, 2026 · Filed Aug 25, 2026
Director sold ~$64K of MPWR shares in the open market Source
Insider trade · Traded Aug 17, 2026 · Filed Aug 20, 2026
CFO sold ~$8.5K of MPWR shares in the open market Source
Fund holdings · Holdings as of Jun 30, 2026 (Q2 2026) · Filed Aug 14, 2026
Bridgewater Associates disclosed a reduced position in MPWR for Q2 2026 Source

July 2026

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026
Officer sold ~$7.63M of MPWR shares in the open market Source
Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026
Officer sold ~$2.51M of MPWR shares in the open market Source
Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026
Officer sold ~$2.03M of MPWR shares in the open market Source
Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026
Officer sold ~$1.96M of MPWR shares in the open market Source

June 2026

Insider trade · Traded Jun 1, 2026 · Filed Jun 3, 2026
Officer sold ~$46K of MPWR shares in the open market Source

May 2026

Insider trade · Traded May 27, 2026 · Filed May 29, 2026
Officer sold ~$12.9M of MPWR shares in the open market Source
Insider trade · Traded May 26, 2026 · Filed May 28, 2026
CFO sold ~$36K of MPWR shares in the open market Source
Insider trade · Traded May 22, 2026 · Filed May 27, 2026
Officer sold ~$7.93M of MPWR shares in the open market Source
Insider trade · Traded May 26, 2026 · Filed May 27, 2026
Director sold ~$816K of MPWR shares in the open market Source

April 2026

Insider trade · Traded Apr 8, 2026 · Filed Apr 10, 2026
Officer sold ~$5.57M of MPWR shares in the open market Source
Insider trade · Traded Apr 8, 2026 · Filed Apr 10, 2026
Officer sold ~$1.67M of MPWR shares in the open market Source
Insider trade · Traded Apr 8, 2026 · Filed Apr 10, 2026
Officer sold ~$1.11M of MPWR shares in the open market Source
Insider trade · Traded Apr 8, 2026 · Filed Apr 10, 2026
Officer sold ~$1.04M of MPWR shares in the open market Source

Insider trade · Traded Aug 11, 2026 · Filed Aug 13, 2026

Director sold ~$71K of MPWR shares in the open market Source

Insider trade · Traded Aug 5, 2026 · Filed Aug 6, 2026

CFO sold ~$141K of MPWR shares in the open market Source

Insider trade · Traded Aug 3, 2026 · Filed Aug 5, 2026

Officer sold ~$40K of MPWR shares in the open market Source

Congress trade · Transaction May 3, 2024 · Disclosed Aug 5, 2026

Disclosed sale of MPWR — reported range $1,001 - $15,000 Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$1.04M of MPWR shares in the open market Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$692K of MPWR shares in the open market Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$649K of MPWR shares in the open market Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$617K of MPWR shares in the open market Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$576K of MPWR shares in the open market Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$567K of MPWR shares in the open market Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$541K of MPWR shares in the open market Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$361K of MPWR shares in the open market Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$329K of MPWR shares in the open market Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$297K of MPWR shares in the open market Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$164K of MPWR shares in the open market Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$155K of MPWR shares in the open market Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$69K of MPWR shares in the open market Source

Insider trade · Traded Jul 15, 2026 · Filed Jul 17, 2026

Officer sold ~$68K of MPWR shares in the open market Source

Congress trade · Transaction Jun 5, 2026 · Disclosed Jul 15, 2026

Disclosed partial sale of MPWR — reported range $1,001 - $15,000 Source

Congress trade · Transaction Jun 5, 2026 · Disclosed Jul 15, 2026

Disclosed partial sale of MPWR — reported range $1,001 - $15,000 Source

Insider trade · Traded Jul 1, 2026 · Filed Jul 6, 2026

Officer sold ~$41K of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 21, 2026

CEO sold ~$9.94M of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 21, 2026

CEO sold ~$8.54M of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 21, 2026

CEO sold ~$8.51M of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 21, 2026

CEO sold ~$7.44M of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 21, 2026

CEO sold ~$6.03M of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 21, 2026

CEO sold ~$5.68M of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 21, 2026

CEO sold ~$4.4M of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 21, 2026

CEO sold ~$1.29M of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 21, 2026

CEO sold ~$912K of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 21, 2026

CEO sold ~$834K of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 21, 2026

CEO sold ~$534K of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 21, 2026

CEO sold ~$5.01M of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 21, 2026

CEO sold ~$198K of MPWR shares in the open market Source

Insider trade · Traded May 18, 2026 · Filed May 20, 2026

CFO sold ~$6.3K of MPWR shares in the open market Source

Insider trade · Traded May 15, 2026 · Filed May 19, 2026

Officer sold ~$5.8M of MPWR shares in the open market Source

Insider trade · Traded May 15, 2026 · Filed May 19, 2026

Officer sold ~$3.14M of MPWR shares in the open market Source

Insider trade · Traded May 15, 2026 · Filed May 19, 2026

Officer sold ~$3.17M of MPWR shares in the open market Source

Insider trade · Traded May 15, 2026 · Filed May 19, 2026

Officer sold ~$2.67M of MPWR shares in the open market Source

Insider trade · Traded May 15, 2026 · Filed May 19, 2026

Officer sold ~$2.06M of MPWR shares in the open market Source

Insider trade · Traded May 15, 2026 · Filed May 19, 2026

Officer sold ~$1.11M of MPWR shares in the open market Source

Insider trade · Traded May 15, 2026 · Filed May 19, 2026

Officer sold ~$707K of MPWR shares in the open market Source

Insider trade · Traded May 15, 2026 · Filed May 19, 2026

Officer sold ~$79K of MPWR shares in the open market Source