Porter Robert S 4

4 · PLATINUM UNDERWRITERS HOLDINGS LTD · Filed Apr 29, 2013

Insider Transaction Report

Form 4

Period: 2013-04-26

PLATINUM UNDERWRITERS HOLDINGS LTDPTP

Porter Robert S

CEO - Platinum Bermuda

Transactions

Exercise/Conversion
Common Shares
2013-04-26$30.75/sh+10,673$328,195→ 171,805 total
Exercise/Conversion
Common Shares
2013-04-26$34.34/sh+50,596$1,737,467→ 211,728 total
Exercise/Conversion
Non-qualified Stock Option (Right to Buy)
2013-04-26−58,253→ 0 total
Exercise: $30.58Exp: 2016-02-27→ Common Shares (58,253 underlying)
Exercise/Conversion
Non-qualified Stock Option (Right to Buy)
2013-04-26−29,150→ 0 total
Exercise: $33.92Exp: 2018-02-20→ Common Shares (29,150 underlying)
Exercise/Conversion
Non-qualified Stock Option (Right to Buy)
2013-04-26−10,673→ 0 total
Exercise: $30.75Exp: 2015-02-23→ Common Shares (10,673 underlying)
Exercise/Conversion
Non-qualified Stock Option (Right to Buy)
2013-04-26−50,596→ 0 total
Exercise: $34.34Exp: 2017-05-29→ Common Shares (50,596 underlying)
Exercise/Conversion
Common Shares
2013-04-26$30.58/sh+58,253$1,781,377→ 219,385 total
Sale
Common Shares
2013-04-26$56.41/sh−50,596$2,853,928→ 161,132 total
Sale
Common Shares
2013-04-26$56.40/sh−10,673$601,955→ 161,132 total
Sale
Common Shares
2013-04-26$56.41/sh−58,253$3,285,894→ 161,132 total
Exercise/Conversion
Common Shares
2013-04-26$33.92/sh+29,150$988,768→ 190,282 total
Sale
Common Shares
2013-04-26$56.40/sh−29,150$1,644,191→ 161,132 total

Footnotes (7)

[F1]This transaction was executed in multiple trades at prices ranging from $56.11 to $57.0401. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes, upon request of the staff of the Securities and Exchange Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
[F2]This transaction was executed in multiple trades at prices ranging from $56.11 to $57.17. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes, upon request of the staff of the Securities and Exchange Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
[F3]This transaction was executed in multiple trades at prices ranging from $56.10 to $57.15. The price reported above reflects the weighted average sales price. The reporting person hereby undertakes, upon request of the staff of the Securities and Exchange Commission, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price.
[F4]The option vested in four equal annual installments beginning on February 24, 2006.
[F5]The option vested in four equal annual installments beginning on February 28, 2007.
[F6]The option vested in four equal annual installments beginning on February 21, 2008.
[F7]The option vested in four equal annual installments beginning on February 21, 2009.

Documents

2 files

4
doc4.xmlPrimary
FORM 4 SUBMISSION
EX-24.4_469614
poa.txt
POA DOCUMENT