ml_sc13ga.htm

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. 10)

RESEARCH IN MOTION LIMITED

(Name of Issuer)

Common Shares

(Title of Class of Securities)

760975-10-2

(CUSIP Number)

Check the appropriate box to designate the rule pursuant to which the Schedule is filed:

¨ Rule 13d-1(b)

¨ Rule 13d-1(c)

x Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. 760975-10-2

13G

Page 2 of 6 Pages

(1)	Names of Reporting Persons Michael Lazaridis
(2)	Check the Appropriate Box if a Member of a Group (See Instructions)			(a) o (b) o
(3)	SEC Use Only
(4)	Citizenship or Place of Organization Canadian
Number of Shares Beneficially Owned by Each Reporting Person With		(5)	Sole Voting Power 28,936,320 as of December 31, 2010
		(6)	Shared Voting Power 0
		(7)	Sole Dispositive Power 28,936,320 as of December 31, 2010
		(8)	Shared Dispositive Power 0
(9)	Aggregate Amount Beneficially Owned by Each Reporting Person 28,936,320 as of December 31, 2010
(10)	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) o
(11)	Percent of Class Represented by Amount in Row (9) 5.5%
(12)	Type of Reporting Person (See Instructions) IN

Item 1(a).	Name of Issuer

	Research In Motion Limited

Item 1(b).	Address of Issuer's Principal Executive Offices

	295 Philip Street
	Waterloo, Ontario N2L 3W8

Item 2(a).	Name of Person Filing

	Michael Lazaridis

	Of the 28,936,320 Common Shares beneficially owned by Mr. Lazaridis as of December 31, 2010:

	(i)	27,579,292 Common Shares are registered in the name of 1258701 Ontario Limited, all the shares of which are owned by Mr. Lazaridis;

	(ii)	340,550 Common Shares are registered in the name of Mr. Lazaridis;

	(iii)	146,478 Common Shares are held by Mr. Lazaridis as trustee of the Michael Lazaridis Family Trust II; and

	(iv)	870,000 Common Shares are issuable on the exercise of stock options granted to Mr. Lazaridis that are exercisable within 60 days of December 31, 2010.

	The 28,936,320 Common Shares beneficially owned by Mr. Lazaridis does not include 80,000 Common Shares issuable on the exercise of stock options and 135,000 Common Shares deliverable on the vesting of Restricted Share Units granted to Mr. Lazaridis that are exercisable/vest more than 60 days after December 31, 2010.

	Certain of the 28,936,320 Common Shares beneficially owned by Mr. Lazaridis are subject to automatic securities disposition plans adopted pursuant to Rule 10b5-1 under the Act and Canadian securities laws on September 28, 2010, as described in the Issuer's press release furnished to the Securities and Exchange Commission on Form 6-K, dated September 29, 2010.


Item 2(b).	Address of Principal Business Office or, if None, Residence

	295 Philip Street
	Waterloo, Ontario N2L 3W8

Item 2(c).	Citizenship

	Canadian

Item 2(d).	Title of Class of Securities

	Common Shares

Item 2(e).	CUSIP Number

	760975-10-2

Item 3.	Filing Category

	Not applicable

Item 4(a).	Amount Beneficially Owned

	28,936,320 as of December 31, 2010

Item 4(b).	Percent of Class

	5.5%

Item 4(c).	Number of shares as to which the Reporting Person has:

	(i)	sole power to vote or direct the vote:

		28,936,320 as of December 31, 2010

	(ii)	shared power to vote or direct the vote:

		0

	(iii)	sole power to dispose or to direct the disposition:

		28,936,320 as of December 31, 2010

	(iv)	shared power to dispose or to direct the disposition:

		0

Item 5.	Ownership of Five Percent or Less of a Class

	Not applicable

Item 6.	Ownership of More Than Five Percent on Behalf of Another Person

	Not applicable

Item 7.	Identification and Classification of the Subsidiary Which Acquired The Security Being Reported on By the Parent Holding Company

	Not applicable

Item 8.	Identification and Classification of Members of the Group

	Not applicable

Item 9.	Notice of Dissolution of Group

	Not applicable

Item 10.	Certification

	Not applicable

SIGNATURE

After reasonable inquiry and to the best of the signatory's knowledge and belief, the signatory certifies that the information set forth in this statement is true, complete and correct.

Dated: February 11, 2011

	/s/ Michael Lazaridis
	Michael Lazaridis