Exhibit 3.5
FEDERAL IDENTIFICATION
NO. 04-2277512
----------------------
THE COMMONWEALTH OF MASSACHUSETTS
WILLIAM FRANCIS GALVIN
Secretary of the Commonwealth
One Ashburton Place, Boston, Massachusetts 02108-1512
ARTICLES OF AMENDMENT
(GENERAL LAWS, CHAPTER 156B, SECTION 72)
We, John R. Bertucci,* President , *President/*Vice President,
----------------------------------------------
and Richard S. Chute, *Clerk , *Clerk/*Assistant Clerk,
----------------------------------------------
of MKS Instruments, Inc. ,
------------------------------------------------------------------------
(Exact name of corporation)
located at Six Shattuck Rd., Andover, MA 01810 ,
----------------------------------------------------------------
(Street address of corporation in Massachusetts)
certify that these Articles of Amendment affecting articles numbered:
Article III
------------------------------------------------------------------------
(Number those articles 1, 2, 3, 4, 5 and/or 6 being amended)
of the Articles of Organization were duly adopted at a meeting held on
May 16, 2002, by vote of: 44,783,983 shares of Common Stock of 50,975,323
- ------ -- ---------- ------------ ----------
(type, class & series, if any)
shares outstanding, shares of of
---------- ------------------------ -----------
(type, class & series, if any)
shares outstanding, and shares of of
------------ ----------------------
(type, class & series, if any)
shares outstanding.
- --------------
(1)** being at least a majority of each type, class or series outstanding and
entitled to vote thereon:/ or (2)** being at least two-thirds of each type,
class or series outstanding and entitled to vote thereon and of each type, class
or series of stock whose rights are adversely affected thereby:
* DELETE THE INAPPLICABLE WORDS. ** DELETE THE INAPPLICABLE CLAUSE.
(1) For amendments adopted pursuant to Chapter 156B, Section 70.
(2) For amendments adopted pursuant to Chapter 156B, Section 71.
NOTE: IF THE SPACE PROVIDED UNDER ANY ARTICLE OR ITEM ON THIS FORM IS
INSUFFICIENT, ADDITIONS SHALL BE SET FORTH ON ONE SIDE ONLY OF SEPARATE
8 1/2 X 11 SHEETS OF PAPER WITH A LEFT MARGIN OF AT LEAST 1 INCH. ADDITIONS TO
MORE THAN ONE ARTICLE MAY BE MADE ON A SINGLE SHEET SO LONG AS EACH ARTICLE
REQUIRING EACH ADDITION IS CLEARLY INDICATED.
To change the number of shares and the par value (if any) of any type, class or
series of stock which the corporation is authorized to issue, fill in the
following:
The total presently authorized is:
<Table>
<Caption>
- -------------------------------------------------------------------------------------------------------------
WITHOUT PAR VALUE STOCKS WITH PAR VALUE STOCKS
- -------------------------------------------------------------------------------------------------------------
TYPE NUMBER OF SHARES TYPE NUMBER OF SHARES PAR VALUE
- -------------------------------------------------------------------------------------------------------------
Common: 75,000,000 Common:
- -------------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------------
Preferred: Preferred: 2,000,000 $0.01
- -------------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------------
</Table>
Change the total authorized to:
<Table>
<Caption>
- -------------------------------------------------------------------------------------------------------------
WITHOUT PAR VALUE STOCKS WITH PAR VALUE STOCKS
- -------------------------------------------------------------------------------------------------------------
TYPE NUMBER OF SHARES TYPE NUMBER OF SHARES PAR VALUE
- -------------------------------------------------------------------------------------------------------------
Common: 200,000,000 Common:
- -------------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------------
Preferred: Preferred: 2,000,000 $0.01
- -------------------------------------------------------------------------------------------------------------
- -------------------------------------------------------------------------------------------------------------
</Table>
The foregoing amendment(s) will become effective when these Articles of
Amendment are filed in accordance with General Laws, Chapter 156B, Section 6
unless these articles specify, in accordance with the vote adopting the
amendment, a later effective date not more than thirty days after such filing,
in which event the amendment will become effective on such later date.
Later effective date:
-------------------------------------------------
SIGNED UNDER THE PENALTIES OF PERJURY, this 16th day of May , 2002,
---------- ---------- --
/s/ John R. Bertucci
John R. Bertucci
- -------------------------------------------------------------------, *President
/s/ Richard S. Chute
Richard S. Chute
- -------------------------------------------------------------------, *Clerk
*Delete the inapplicable words.