1. Name and Address of Reporting Person
*
ICAHN CARL C
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2. Issuer Name
and
Ticker or Trading Symbol
MENTOR GRAPHICS CORP
[
MENT
]
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5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director
__
X
__ 10% Owner
_____ Officer (give title below)
_____ Other (specify below)
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(Last)
(First)
(Middle)
C/O ICAHN ASSOCIATES CORP., 767 FIFTH AVE., SUITE 4700
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3. Date of Earliest Transaction
(MM/DD/YYYY)
8/24/2010
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(Street)
NEW YORK, NY 10153
(City)
(State)
(Zip)
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4. If Amendment, Date Original Filed
(MM/DD/YYYY)
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6. Individual or Joint/Group Filing
(Check Applicable Line)
___ Form filed by One Reporting Person
_
X
_ Form filed by More than One Reporting Person
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Explanation of Responses:
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(
1)
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High River Limited Partnership ("High River") directly beneficially owns 3,200,777 Shares, Icahn Partners LP ("Icahn Partners") directly beneficially owns 4,876,696 Shares, Icahn Partners Master Fund LP ("Icahn Master") directly beneficially owns 5,531,613 Shares, Icahn Partners Master Fund II LP ("Icahn Master II") directly beneficially owns 1,612,668 Shares, and Icahn Partners Master Fund III LP ("Icahn Master III") directly beneficially owns 782,135 Shares.
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(
2)
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Barberry Corp. ("Barberry"), is the sole member of Hopper Investments LLC ("Hopper"), which is the general partner of High River. Beckton Corp. ("Beckton") is the sole stockholder of Icahn Enterprises G.P. Inc. ("Icahn Enterprises GP"), which is the general partner of Icahn Enterprises Holdings L.P. ("Icahn Enterprises Holdings"). Icahn Enterprises Holdings is the sole member of IPH GP LLC ("IPH"), which is the general partner of Icahn Capital LP ("Icahn Capital"). Icahn Capital is the general partner of each of Icahn Onshore LP ("Icahn Onshore") and Icahn Offshore LP ("Icahn Offshore"). Icahn Onshore is the general partner of Icahn Partners. Icahn Offshore is the general partner of each of Icahn Master, Icahn Master II and Icahn Master III.
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(
3)
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Each of Barberry and Beckton is 100 percent owned by Carl C. Icahn. As such, Mr. Icahn is in a position indirectly to determine the investment and voting decisions made by each of High River, Icahn Partners, Icahn Master, Icahn Master II and Icahn Master III. Each of Hopper, Barberry and Mr. Icahn may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the Shares which High River owns. Each of Hopper, Barberry and Mr. Icahn disclaims beneficial ownership of such Shares except to the extent of their pecuniary interest therein.
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(
4)
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Each of Icahn Onshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the Shares which Icahn Partners owns. Each of Icahn Onshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn disclaims beneficial ownership of such Shares except to the extent of their pecuniary interest therein.
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(
5)
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Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the Shares which each of Icahn Master, Icahn Master II and Icahn Master III owns. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn disclaims beneficial ownership of such Shares except to the extent of their pecuniary interest therein.
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(
6)
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High River directly beneficially owned 1,647,013 call options (the "Call Options"), Icahn Partners directly beneficially owned 2,615,269 Call Options, Icahn Master directly beneficially owned 2,864,284 Call Options, Icahn Master II directly beneficially owned 678,964 Call Options, and Icahn Master III directly beneficially owned 429,536 Call Options. On August 24, 2010, each of High River, Icahn Partners, Icahn Master, Icahn Master II and Icahn Master III exercised all of their respective Call Options in their entirety, and thereby acquired 1,647,013 Shares, 2,615,269 Shares, 2,864,284 Shares, 678,964 Shares, and 429,536 Shares, respectively.
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(
7)
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High River directly wrote 1,647,013 European-style put options (the "Put Options"), Icahn Partners directly wrote 2,615,269 Put Options, Icahn Master directly wrote 2,864,284 Put Options, Icahn Master II directly wrote 678,964 Put Options, and Icahn Master III directly wrote 429,536 Put Options. On August 24, 2010, upon exercise of the Call Options, all of the Put Options terminated.
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(
8)
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The exercise price upon exercise of the Call Options was $5.65 and the average premium paid for the Call Options was $3.58.
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Reporting Owners
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Reporting Owner Name / Address
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Relationships
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Director
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10% Owner
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Officer
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Other
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ICAHN CARL C
C/O ICAHN ASSOCIATES CORP.
767 FIFTH AVE., SUITE 4700
NEW YORK, NY 10153
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X
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HIGH RIVER LIMITED PARTNERSHIP
445 HAMILTON AVENUE
SUITE 1210
WHITE PLAINS, NY 10601
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X
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ICAHN PARTNERS MASTER FUND LP
C/O WALKER HOUSE
87 MARY STREET
GEORGE TOWN, GRAND CAYMAN, E9 KY1-9001
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X
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ICAHN PARTNERS MASTER FUND II L.P.
C/O WALKER HOUSE
87 MARY STREET
GRAND CAYMAN, CAYMAN ISLANDS, E9 KY1-9001
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X
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ICAHN PARTNERS MASTER FUND III L.P.
C/O WALKER HOUSE
87 MARY STREET
GRAND CAYMAN, CAYMAN ISLANDS, E9 KY1-9001
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X
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ICAHN PARTNERS LP
767 FIFTH AVENUE
47TH FLOOR
NEW YORK, NY 10153
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X
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