---
title: "Monolithic Power CEO Michael Hsing Has Sold $750 Million in MPWR Stock Across 1,747 Transactions"
type: news
slug: hsing-mpwr-750-million-ceo-insider-sales
canonical_url: https://13finsight.com/news/hsing-mpwr-750-million-ceo-insider-sales
published_at: 2026-03-01T10:53:05.445Z
updated_at: 2026-03-01T11:00:37.113Z
author: Alex Rivera
author_title: Breaking News Editor
author_url: https://13finsight.com/authors/alex-rivera
word_count: 375
locale: en
source: 13F Insight
---

# Monolithic Power CEO Michael Hsing Has Sold $750 Million in MPWR Stock Across 1,747 Transactions

> MPS CEO Michael Hsing sold roughly $15.3 million in MPWR shares on November 12, 2025 at prices near $970 per share, part of a two-decade selling program totaling $750 million.

Michael Hsing, CEO and founder of Monolithic Power Systems (MPWR), sold approximately 15,800 shares on November 12, 2025 at prices between $966 and $980, netting roughly $15.3 million. The sale is part of a systematic selling program that has totaled $750 million across 1,747 transactions since 2004, making Hsing one of the most prolific CEO sellers in the semiconductor industry. The Numbers Metric Value Career Sell Value $750 million Total Transactions 1,747 First Transaction Nov 24, 2004 Last Transaction Dec 9, 2025 Shares Remaining 1,043,157 Career Buy Value $0 Recent Activity Date Type Shares Price Est. Value Feb 3, 2026 Award 136,825 — — Dec 9, 2025 Gift 12,337 — — Nov 12, 2025 Sell 6,562 $966.45 $6.34M Nov 12, 2025 Sell 3,024 $967.41 $2.93M Nov 12, 2025 Sell 2,072 $968.37 $2.01M Nov 12, 2025 Sell 4,141 $969–980 $4.03M Hsing's November 12, 2025 selling burst consisted of at least 10 separate transactions executed at staggered prices between $966 and $980, a signature 10b5-1 execution pattern. Just weeks later, he gifted 12,337 shares — a common pairing where a CEO sells a block for liquidity, then donates another block for tax-advantaged philanthropy. In February 2026, he received a 136,825-share stock award, replenishing a portion of his sold position. What It Means Hsing founded Monolithic Power Systems in 1997 and has built it into one of the highest-growth analog semiconductor companies in the market, with shares rising from under $10 to nearly $1,000 over two decades. His $750 million in career sales represents systematic monetization of that founder's equity through pre-arranged trading plans. The selling has been remarkably consistent — small blocks every few weeks — rather than concentrated bursts. With 1.04 million shares remaining (worth approximately $1 billion at current prices), Hsing's economic alignment with shareholders remains significant. The February 2026 award of 136,825 shares also signals the board's continued confidence in his leadership. What to Watch MPWR's exposure to AI data center power management — a rapidly growing segment that has driven the stock's recent surge past $900 Whether Hsing's selling cadence increases at current near-all-time-high prices, which would be notable for a founder who typically sells in measured amounts Upcoming MPS earnings reports and any changes to full-year guidance that could affect insider sentiment

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Source: 13F Insight — https://13finsight.com/news/hsing-mpwr-750-million-ceo-insider-sales
Author: Alex Rivera — https://13finsight.com/authors/alex-rivera
Last updated: 2026-03-01T11:00:37.113Z