Exhibit 1

May 27, 2010

Canadian Securities Administrators GARY M. S. CHAD, Q.C.
Senior Vice-President,
Governance, Law and
Corporate Secretary

CAMECO CORPORATION
Corporate Office
2121 — 11th Street West
Saskatoon, Saskatchewan
Canada S7M 1J3

Tel 306.956.6303
Fax 306.956.6312
www.cameco.com

Cameco Corporation
Annual Meeting May 26, 2010
Report of Voting Results
Under National Instrument 51-102

In accordance with Section 11.3 of National Instrument 51-102 — Continuous Disclosure Obligations, we hereby advise of the results of the voting on the matters submitted to the annual meeting (the “Meeting”) of the shareholders (the “Shareholders”) of Cameco Corporation (the “Corporation”) held on May 26, 2010. Each of the matters set forth below is described in greater detail in the Notice for the Meeting and Management Proxy Circular mailed to Shareholders prior to the Meeting.

The matters voted upon at the Meeting and the results of the voting were as follows:

Item 1: Election of Directors

The following directors were elected to hold office for the ensuing year or until their successors are elected or appointed:

John H. Clappison	Nancy E. Hopkins
Joe F. Colvin	Oyvind Hushovd
James. R. Curtiss	J.W. George Ivany
Donald H. F. Deranger	A. Anne McLellan
James K. Gowans	A. Neil McMillan
Gerald W. Grandey	Victor J. Zaleschuk

NUCLEAR. The Clean Air Energy.

May 27, 2010
Page 2

If a ballot vote had been taken, based upon proxy votes by Shareholders received by the Corporation and after giving effect to the twenty-five (25%) percent non-resident Shareholder voting restriction, the voting results for the election of directors would have been:

Nominee	Votes For		% Votes For			Withheld		% Votes Withheld
John H. Clappison		159,512,800		98.21	%		2,905,738		1.79	%
Joe Colvin		161,355,400		99.35	%		1,063,138		0.65	%
James R. Curtiss		155,527,493		95.76	%		6,891,046		4.24	%
Donald H. F. Deranger		159,169,637		98.00	%		3,248,901		2.00	%
James K. Gowans		161,697,316		99.56	%		721,222		0.44	%
Gerald W. Grandey		161,156,793		99.22	%		1,261,745		0.78	%
Nancy E. Hopkins		161,160,671		99.23	%		1,257,867		0.77	%
Oyvind Hushovd		155,478,938		95.73	%		6,939,600		4.27	%
J.W. George Ivany		155,530,626		95.76	%		6,887,912		4.24	%
A. Anne McLellan		156,029,704		96.07	%		6,388,834		3.93	%
A. Neil McMillan		161,405,064		99.38	%		1,013,475		0.62	%
Victor J. Zaleschuk		161,671,301		99.54	%		747,237		0.46	%

Item 2: Appointment of Auditors

By a vote by way of show of hands, KPMG LLP was appointed auditors of the Corporation to hold office until the next annual meeting of Shareholders, or until their successors are appointed.

If a ballot vote had been taken, based upon proxy votes by Shareholders received by the Corporation and after giving effect to the twenty-five (25%) percent non-resident Shareholder voting restriction, the voting results for appointment of auditors would have been:

Votes For	% Votes For			Votes Withheld		% Votes Withheld
162,221,341		97.45	%		4,252,378		2.55	%

Item 3: Executive Compensation

On a vote by ballot, an advisory resolution was passed accepting the approach to executive compensation disclosed in Cameco’s management proxy circular delivered in advance of this meeting.

The outcome of the ballot vote, after giving effect to the twenty-five (25%) percent non-resident voting restriction, was as follows:

Votes For	% Votes For			Votes Against		% Votes Against
152,749,488		91.74	%		13,745,528		8.26	%

Cameco Corporation
By:	/s/ “Gary M. S. Chad” Gary M. S. Chad
	Senior Vice-President, Governance,
	Law and Corporate Secretary