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MONOLITHIC POWER SYSTEMS INC — Director's Dealing 2012
May 2, 2012
30057_dirs_2012-05-02_e6ad3ff1-591f-4240-a928-5817fbeac229.zip
Director's Dealing
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SEC Form 4 — Statement of Changes in Beneficial Ownership
Issuer: MONOLITHIC POWER SYSTEMS INC (MPWR)
CIK: 0001280452
Period of Report: 2012-04-30
Reporting Person: Xiao Deming (Pres. of MPS Asia Operations)
Non-Derivative Transactions
| Date | Security | Code | Shares | Price | A/D | Holdings After | Ownership |
|---|---|---|---|---|---|---|---|
| 2012-04-30 | Common Stock | M | 44494.0 | $5.0 | Acquired | 193902.0 | Direct |
| 2012-04-30 | Common Stock | S | 44494.0 | $20.9001 | Disposed | 149408.0 | Direct |
| 2012-05-01 | Common Stock | M | 2381.0 | $5.0 | Acquired | 151789.0 | Direct |
| 2012-05-01 | Common Stock | S | 16438.0 | $21.872 | Disposed | 135351.0 | Direct |
| 2012-05-02 | Common Stock | S | 1379.0 | $21.002 | Disposed | 133972.0 | Direct |
Derivative Transactions
| Date | Security | Exercise Price | Code | Shares | A/D | Expiration | Underlying | Ownership |
|---|---|---|---|---|---|---|---|---|
| 2012-04-30 | Incentive Stock Option (right to buy) | $5.0 | M | 44494.0 | Disposed | 2014-01-28 | Common Stock (44494.0) | Direct |
| 2012-05-01 | Incentive Stock Option (right to buy) | $5.0 | M | 2381.0 | Disposed | 2014-01-28 | Common Stock (2381.0) | Direct |
Holdings (Non-Derivative)
| Security | Shares | Ownership |
|---|---|---|
| Common Stock | 18600.0 | Indirect |
Footnotes
F1: In accordance with the reporting person's 10b5-1 trading plan.
F2: 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 $20.80 to $21.08. 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.
F3: 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 $21.52 to $22.02. 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.
F4: Shares sold to pay tax obligations resulting from the vesting of restricted stock units.