Hsing Michael sold MPWR

September 28, 2026 · Form 4 insider transaction

Hsing Michael sold 1,111 shares of Monolithic Power Systems, Inc. at $1333.34 per share, a transaction worth $1.48M. The trade was recorded as open-market sale under a pre-scheduled Rule 10b5-1 plan and disclosed on an SEC Form 4, filed 2 days after the transaction.

Direction
Disposed (sell-side)
Shares
1,111
Price
$1333.34
Total value
$1.48M
RoleOfficer, Director
SecurityCommon Stock
Transaction codeS: Open-market sale
Transaction dateSeptember 28, 2026
Filing dateSeptember 30, 2026
Shares owned after844,436
OwnershipDirect
10b5-1 planYes
AmendedNo

Footnotes

These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 05/29/2026.; The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $1,330.65 to $1,335.51. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.

View the original Form 4 on SEC EDGAR