MPWR Monolithic Power Systems

• None no insider bought on the open market
• $299M sold by 9 insiders outside a trading plan
• $258M sold by 5 insiders under 10b5-1 plans

1. Insider
   Trade
   Value
   Traded, filed
2. Michael Hsing CEO
   Planned sale
   $40.3M 30,000 shares at $1,344.97 3.5% of stake
   Traded Sep 28 Filed Sep 30
   ↗
3. Kuo Wei Herbert Chang Director
   Sale
   $64K 50 shares at $1,281.57 8.8% of stake
   Traded Aug 24 Filed Aug 25
   ↗
4. Kuo Wei Herbert Chang Director
   Sale
   $71K 50 shares at $1,420.00 8.1% of stake
   Traded Aug 11 Filed Aug 13
   ↗
5. Robert W Dean II CFO
   Sale
   $141K 105 shares at $1,344.27 1.5% of stake
   Traded Aug 5 Filed Aug 6
   ↗
6. Maurice Sciammas EVP, WW Sales & Marketing
   Planned sale
   $40K 30 shares at $1,343.94 2.6% of stake
   Traded Aug 3 Filed Aug 5
   ↗
7. Maurice Sciammas EVP, WW Sales & Marketing
   Planned sale
   $20.2M 15,000 shares at $1,349.73 9% of stake
   Traded Jul 15 Filed Jul 17
   ↗
8. Maurice Sciammas EVP, WW Sales & Marketing
   Planned sale
   $41K 30 shares at $1,351.61 2.5% of stake
   Traded Jul 1 Filed Jul 6
   ↗
9. Maurice Sciammas EVP, WW Sales & Marketing
   Planned sale
   $46K 30 shares at $1,533.95 2.5% of stake
   Traded Jun 1 Filed Jun 3
   ↗
10. Saria Tseng EVP & General Counsel
    Sale
    $12.9M 7,565 shares at $1,700.00 5% of stake
    Traded May 27 Filed May 29
    ↗
11. Jeff Zhou Director
    Sale
    $816K 486 shares at $1,680.00 11% of stake
    Traded May 26 Filed May 27
    ↗
12. Saria Tseng EVP & General Counsel
    Sale
    $7.9M 5,000 shares at $1,586.43 3.2% of stake
    Traded May 22 Filed May 27
    ↗
13. Michael Hsing CEO
    Sale
    $59.3M 40,000 shares at $1,482.75 4.5% of stake
    Traded May 18 Filed May 20
    ↗
14. Maurice Sciammas EVP, WW Sales & Marketing
    Planned sale
    $18.7M 12,000 shares at $1,561.40 6.7% of stake
    Traded May 15 Filed May 19
    ↗
15. Eugen J Elmiger Director
    Sale
    $19M 12,000 shares at $1,584.96 69% of stake
    Traded May 6 Filed May 8
    ↗
16. Deming Xiao EVP, Global Operations
    Sale
    $49.6M 30,000 shares at $1,654.55 13% of stake
    Traded May 6 Filed May 8
    ↗

Also filed in the last 12 months, not counted as buying or selling: 13 gifts, 12 stock grants, 9 sales to cover taxes, 5 share withholdings for taxes, and 2 other transactions.