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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

[Rule 13d-101]

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT
TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT
TO RULE § 240.13d-2(a)

(Amendment No. 4)

Mediware Information Systems, Inc.

(Name of Issuer)

Common Stock, par value $0.10 per share

(Title of Class of Securities)

584946107

(CUSIP Number)

John Billowits
20 Adelaide Street East, Suite 1200
Toronto, ON M5C 2T6
(416) 861-0630

(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

July 14, 2010

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Rule 13d-1(e), 13d-1(f) or 13d-1(g), check the following box. o

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7(b) for other parties to whom copies are to be sent.

(Continued on following pages)


CUSIP No.		584946107	13D	Page		2		of		14	Pages

NAMES OF REPORTING PERSONS

Constellation Software Inc.

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

(a) o

(b) þ

SEC USE ONLY

SOURCE OF FUNDS (SEE INSTRUCTIONS)

BK, WC

CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)

CITIZENSHIP OR PLACE OF ORGANIZATION

Ontario, Canada

SOLE VOTING POWER

NUMBER OF

SHARED VOTING POWER

BENEFICIALLY

OWNED BY

1,798,725

EACH

SOLE DISPOSITIVE POWER

REPORTING

PERSON

WITH

SHARED DISPOSITIVE POWER

1,479,393

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,798,725

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

22.8%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)


CUSIP No.		584946107	13D	Page		3		of		14	Pages

NAMES OF REPORTING PERSONS

Mark Leonard

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS)

(a) o

(b) þ

SEC USE ONLY

SOURCE OF FUNDS (SEE INSTRUCTIONS)

CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)

CITIZENSHIP OR PLACE OF ORGANIZATION

Canada

SOLE VOTING POWER

NUMBER OF

SHARED VOTING POWER

BENEFICIALLY

OWNED BY

1,798,725

EACH

SOLE DISPOSITIVE POWER

REPORTING

PERSON

318,632

WITH

SHARED DISPOSITIVE POWER

1,479,393

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

1,798,725

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

22.8%

TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)


CUSIP No.		584946107	13D	Page		4		of		14	Pages

This Amendment No. 4 (“Amendment No. 4”) amends the statement on Schedule 13D initially filed on April 15, 2008 (the “Original Filing”) by Constellation Software Inc. (“Constellation”), as amended by Amendment No. 1 filed on May 21, 2008 (“Amendment No. 1”), as amended by Amendment No. 2 filed on November 14, 2008 (“Amendment No. 2”), as amended by Amendment No. 3 filed on August 24, 2009 (together, with the Original Filing, Amendment No. 1 and Amendment No. 2 the “Previous Filings”) with respect to common stock, $.10 par value (the “Shares”), of Mediware Information Systems, Inc. (the “Issuer”). Capitalized terms used and not defined in this Amendment No. 4 have the meanings set forth in the Previous Filings. This Amendment No. 4 is being made to disclose the acquisition of additional securities of the Issuer by Constellation. As reported in the Previous Filings, Dexter Salna, President of the Homebuilder Operating Group, a wholly-owned subsidiary of Constellation, beneficially owns 700 Shares of the Issuer. As his beneficial ownership has not changed, he is not a “Reporting Person” for the purposes of this Amendment No. 4. Except as otherwise set forth herein, this Amendment No. 4 does not modify any of the information previously reported by Constellation in the Previous Filings.

ITEM 1. Security and Issuer.

Not Applicable.

ITEM 2. Identity and Background.

Item 2 of the Previous Filings is hereby amended as follows:

Appendix A, Appendix B, Appendix C and Appendix D referenced in Item 2 are hereby amended and restated in their entirety as reflected below.

ITEM 3. Source and Amount of Funds or Other Consideration.

The first sentence of Item 3 of the Previous Filings is hereby amended as follows:

Constellation used an aggregate of $8,885,220 to purchase the Shares. $4,254,152 came from Constellation’s available working capital and $4,631,068 came from an existing working capital line of credit with the Bank of Montreal.

ITEM 4. Purpose of Transaction.

Not Applicable.

ITEM 5. Interest in Securities of the Issuer.

Item 5 of the Previous Filings is hereby amended and restated in its entirety as follows:

(a)-(b) The Shares that may be deemed beneficially owned by the Reporting Persons for purposes of Section 13(d) of the Securities Exchange Act of 1934 is 1,798,725, which represents 22.8% of the outstanding Shares. This percentage is based upon 7,889,268 Shares outstanding as of April 19, 2010 as listed in the Issuer’s Quarterly Report on Form 10-Q for the period ended March 31, 2010. Constellation has shared power to control the vote of 1,798,725 Shares and shared power to dispose of 1,479,393 Shares. Mark Leonard has shared power to control the vote of 1,798,725 Shares and shared power to dispose of 1,479,393 Shares and sole power to dispose of 318,632 Shares. Dexter Salna has shared power to control the vote of 700 Shares and sole power to dispose of 700 Shares. The Reporting Persons specifically disclaim beneficial ownership in the Shares reported herein except to the extent of their pecuniary interest therein.

Other than as set forth herein, to the knowledge of Constellation, without specific inquiry, none of Constellation’s executive officers listed herein, directors listed on Appendix A, OMERS, OMERS Holdings, Birch Hill Equity, Birch Hill Holdings or any of the individuals set out in Appendix B, Appendix C or Appendix D holds Shares of the Issuer. The directors, executive officers and controlling parties of Constellation may be deemed to


CUSIP No.		584946107	13D	Page		5		of		14	Pages

beneficially own Shares held by Constellation but disclaim any beneficial ownership except to the extent of any pecuniary interest therein.

(c)

Mark Leonard has not effected any transactions in Shares of the Issuer in the last sixty 60 days. All transactions in Shares of the Issuer made by Constellation were open market purchases as follows:


			Average Price
	Number of		(excluding
Date	Shares		commission)
May 12, 2010		9,628	$	9.3838
June 30, 2010		7,500	$	8.9599
July 1, 2010		4,000		9.0000
July 6, 2010		10,000		8.9980
July 8, 2010		2,500		9.0000
July 13, 2010		2,500		9.0000
July 14, 2010		97,000		9.0000

	(d)		To the knowledge of Constellation, without specific inquiry, none of the directors, officers or controlling parties of Constellation have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, its securities. To the knowledge of Mark Leonard and Dexler Salna, no other person has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, his securities.

	(e)		Not applicable.

ITEM 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer.

Not Applicable.

ITEM 7. Material to be Filed as Exhibits.

The following documents are filed as Exhibits to this statement:

Exhibit A Joint Filing Agreement, dated July 16, 2010, by and between Constellation and Mark Leonard.


CUSIP No.		584946107	13D	Page		6		of		14	Pages

SIGNATURES

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


Dated: July 16, 2010 CONSTELLATION SOFTWARE INC.
By:	/s/ John Billowits
	Name:	John Billowits
	Title:	Chief Financial Officer

Dated: July 16, 2010 MARK LEONARD
By:	/s/ Mark Leonard
	Name:	Mark Leonard


CUSIP No.		584946107	13D	Page		7		of		14	Pages

EXHIBIT A

JOINT FILING AGREEMENT

Pursuant to Rule 13d-1(k), promulgated under the Securities Exchange Act of 1934, the undersigned persons hereby agree to file with the Securities and Exchange Commission this Statement on Schedule 13D (the “Statement”) to which this Joint Filing Agreement (the “Agreement”) is attached as an exhibit and any future amendments thereto, and agree that such Statement is filed on behalf of each of them.

IN WITNESS WHEREOF, the undersigned have executed this Agreement.
Dated: July 16, 2010


CONSTELLATION SOFTWARE INC.
By:	/s/ John Billowits
	Name:	John Billowits
	Title:	Chief Financial Officer

MARK LEONARD
By:	/s/ Mark Leonard
	Name:	Mark Leonard


CUSIP No.		584946107	13D	Page		8		of		14	Pages

APPENDIX A

PRINCIPAL BUSINESS ADDRESSES AND PRINCIPAL OCCUPATIONS OF DIRECTORS OF
CONSTELLATION

Directors:

Michael Mazan
Partner
Birch Hill Equity Partners Management Inc.
100 Wellington St West
PO Box 22
Suite 2300
Toronto, Ontario M5K 1A1
Canada
Citizenship: Canadian

Lisa Melchior
Managing Director
OMERS Capital Partners Inc.
Royal Bank Plaza,
South Tower,
200 Bay street, Suite 2010,
Box 6, Toronto, Ontario M5J 2J2
Canada
Citizenship: Canadian

Brian Aune
Private Investor
1800 McGill College Avenue
Suite 3010
Montreal QC H3A 3J6
Canada
Citizenship: Canadian

Ian McKinnon
Consultant
63 Fairfield Drive
Toronto Ontario M4P 1S9
Canada
Citizenship: Canadian

Stephen J. Dent
Chair
Birch Hill Equity Partners Management Inc.
100 Wellington St West
PO Box 22
Suite 2300
Toronto, Ontario M5K 1A1
Canada
Citizenship: Canadian

Paul G. Renaud
President
OMERS Capital Partners Inc.
Royal Bank Plaza,
South Tower,
200 Bay street, Suite 2010,
Box 6, Toronto, Ontario M5J 2J2
Canada
Citizenship: UK

Stephen Scotchmer
Private Investor
Royal Trust Tower
Suite 2526
Toronto Dominion Centre
Toronto, ON M5K 1K2
Canada
Citizenship: Canadian

Mark Leonard
President and Chairman of the Board
Constellation Software Inc.
20 Adelaide St. East
Suite 1200
Toronto Ontario, M5C 2T6
Canada
Citizenship: Canadian


CUSIP No.		584946107	13D	Page		9		of		14	Pages

APPENDIX B

INFORMATION REGARDING OMERS HOLDINGS,
ITS DIRECTORS AND EXECUTIVE OFFICERS

Principal Business: Investment Holding Company Principal Address: OMERS Capital Partners, Royal Bank Plaza, South Tower,
Suite 2010, 200 Bay Street, P.O. Box 6, Toronto, Ontario M5J 2J2 Canada

Directors:

The principal business address of the directors is: c/o OMERS Private Equity, Royal Bank Plaza, South Tower, Suite 2010, 200 Bay Street, P.O. Box 6, Toronto, Ontario M5J 2J2 Canada

Paul G. Renaud
Citizenship: Canadian

Lisa Melchior
Citizenship: Canadian

Executive Officers:

The principal business address of the following executive officers, unless otherwise indicated, is c/o OMERS Capital Partners, (as above).


Paul G. Renaud		President
Citizenship: Canadian

Lisa Melchior		Managing Director
Citizenship: Canadian

Chantal Thibault		Secretary
Citizenship: Canadian

Robert C. Hedges		Treasurer
Citizenship: Canadian

Christine A. Sharp		Assistant Secretary
c/o OMERS Administration Corporation One University Avenue Suite 800 Toronto ON M5J 2P1 Canada Citizenship: Canadian


CUSIP No.		584946107	13D	Page		10		of		14	Pages

INFORMATION REGARDING OMERS,
ITS DIRECTORS AND EXECUTIVE OFFICERS

Principal Business: Provider of pension services

Principal Address: OMERS Administration Corporation, 10th Floor, One University Avenue, Toronto, ON M5J 2P1 Canada.

Directors:

David Carrington
Energy Service Advisor
Toronto Hydro
5800 Yonge Street
Toronto, ON M2M 3T3
Canada
Citizenship: Canadian

Richard Faber
Retiree
9962 Pinetree Crescent
Grand Bend ON N0M 1T0
Canada
Citizenship: Dutch

John Goodwin
1177 Yonge Street, Suite 615
Toronto ON M4T 2Y4
Canada
Citizenship: Canadian

Rick Miller
Fire Fighter
Windsor Fire Department
815 Goyeau Street
Windsor ON N9A 1H7
Canada
Citizenship: Canadian

David O’Brien
1837 Snow Bunting Court
Mississauga, ON L5L 2Y8
Canada
Citizenship: Canadian

William E. Aziz
c/o Hollinger Inc.
100 King Street West, Suite 3700
Toronto ON M5X 1C9
Canada
Citizenship: Canadian

Sheila Vandenberk
15 Fenwick Crescent
Unionville ON L3R 4H6
Canada
Citizenship: Canadian

Michael Power
Mayor
Municipality of Greenstone
P.O. Box 70
301 East Street
Geraldton ON P0T 1M0
Canada
Citizenship: Canadian

John Sabo
Associate Director —Leading Services &
Treasurer of the Board
York Catholic District School Board
320 Bloomington Road West
Aurora ON L4G 3G8
Canada
Citizenship: Canadian

Eugene Swimmer
c/o School of Public Policy and Admin
Carleton University, Room 1001, Dunton Tower
1125 Colonel by Drive
Ottawa ON K1S 5B6
Canada
Citizenship: Canadian

John Weatherup
President
CUPE 4400
Suite 200
1482 Bathurst Street
Toronto ON M5P 3H1
Canada
Citizenship: Canadian

Laurie Nancekivell
c/o Children’s Aid Society of London and Middlesex
1680 Oxford Street East, P.O. Box 7010
London ON N5Y 5R8
Canada
Citizenship: Canadian

F. Leslie Thompson
c/o LESRISK Debt and Risk Management Inc.

123 Major Street, Suite 201
Toronto ON M5S 2K9
Canada
Citizenship: Canadian

James Phillips
c/o Family and Children’s Services of Waterloo Region
200 Ardelt Avenue
Kitchener ON N2C 2L9
Canada
Citizenship: Canadian


CUSIP No.		584946107	13D	Page		11		of		14	Pages

Executive Officers:

The principal business address of the following executive officers, unless otherwise indicated, is c/o OMERS Administration Corporation, 8th Floor, One University Avenue, Toronto, ON M5J 2P1 Canada. The citizenship of all officers listed is Canadian.


Michael J. Nobrega		President and Chief Executive Officer

R. Michael Latimer		Executive Vice President and Chief Investment Officer

Patrick G. Crowley		Executive Vice President and Chief Financial Officer

John W. Macdonald		Executive Vice President and Chief Operating Officer

G. Blair Cowper-Smith		Chief Legal Officer and Executive Vice President, Corporate Affairs

Jennifer Brown		Chief Pension Officer and Executive Vice President

James Donegan		President, OMERS Capital Markets and Chief Executive Officer, OMERS
c/o OMERS Capital Markets Royal Bank Plaza North Tower, Suite 1800 200 Bay Street Toronto ON M5J 2J2 Canada		Capital Markets

James A. Roks		Corporate Secretary

Christine A. Sharp		Assistant Corporate Secretary

Walter Lehman c/o OMERS Capital Markets Royal Bank Plaza North Tower, Suite 1800 200 Bay Street Toronto ON M5J 2J2 Canada		Assistant Corporate Secretary


CUSIP No.		584946107	13D	Page		12		of		14	Pages

APPENDIX C

INFORMATION REGARDING BIRCH HILL EQUITY,
ITS DIRECTORS AND EXECUTIVE OFFICERS

Principal Business: General Partner (for Private Equity Fund)
Principal Address: Birch Hill Equity Partners Management Inc., 100 Wellington Street West, 23rd Floor, PO Box 22, Toronto, ON M5K 1A1 Canada

Directors:

Joseph P. Wiley
Chief Executive Officer
Birch Hill Equity Partners Management Inc.
100 Wellington Street West
PO Box 22, Suite 2300
Toronto, ON M5K 1A1
Canada
Citizenship: Canadian

Stephen J. Dent
Chair
Birch Hill Equity Partners Management Inc.
100 Wellington Street West
PO Box 22, Suite 2300
Toronto, ON M5K 1A1
Canada
Citizenship: Canadian

John B. MacIntyre
President
Birch Hill Equity Partners Management Inc.
100 Wellington Street West
PO Box 22, Suite 2300
Toronto, ON M5K 1A1
Canada
Citizenship: Canadian

David Samuel
Executive Vice President
100 Wellington Street West
PO Box 22, Suite 2300
Toronto, ON M5K 1A1
Canada
Citizenship: Canadian

Executive Officers:

The principal business address of the following executive officers is c/o Birch Hill Equity Partners Management Inc. (as above). The citizenship of all officers is Canadian.


Stephen J. Dent		Chairman

John B. MacIntyre		President

Joseph P. Wiley		CEO

Pierre Schuurmans		COO

Lori Evans		General Counsel & Secretary

Peter Zissis		CFO

Michael Mazan		Sr. Vice President

Michael J. Salamon		Sr. Vice President

Paul R. Henry		Sr. Vice President


CUSIP No.		584946107	13D	Page		13		of		14	Pages


David Samuel		Executive Vice President


William A. Lambert		Sr. Vice President

John T. Loh		Sr. Vice President

William C. Stevens		Vice President

Thecla E. Sweeney		Vice President

Matthew Kunica		Vice President

Irfhan Rawji		Vice President

Rocco Bryan		Vice President


CUSIP No.		584946107	13D	Page		14		of		14	Pages

APPENDIX D

INFORMATION REGARDING BIRCH HILL HOLDINGS,
ITS DIRECTORS AND EXECUTIVE OFFICERS

Principal Business: Holding Company
Principal Address: Birch Hill Equity Partners Management Inc., 100 Wellington Street West, 23 rd Floor, Toronto, ON M5K 1A1

Directors:


Joseph P. Wiley		Pierre Schuurmans
Director		Director
Birch Hill Equity Partners Management		Birch Hill Equity Partners Management Inc.
100 Wellington Street West		100 Wellington Street West
PO Box 22, Suite 2300		PO Box 22, Suite 2300
Toronto, ON M5K 1A1		Toronto, ON M5K 1A1
Canada		Canada
Citizenship: Canadian		Citizenship: Canadian

Richard H. Greene		Michael Salamon
Director		Director
Birch Hill Equity Partners Management		Birch Hill Equity Partners Management Inc.
100 Wellington Street West		100 Wellington Street West
PO Box 22, Suite 2300		PO Box 22, Suite 2300
Toronto, ON M5K 1A1		Toronto, ON M5K 1A1
Canada		Canada
Citizenship: Canadian		Citizenship: Canadian

Executive Officers:

The principal business address of the following executive officers is c/o Birch Hill Equity Partners Management Inc. (as above). The citizenship of all officers is Canadian.


Stephen J. Dent		Chairman

John B. MacIntyre		President

Joseph P. Wiley		CEO

Pierre Schuurmans		COO

Peter Zissis		CFO

Lori Evans		General Counsel & Secretary

William A. Lambert		Sr. Vice President

Michael Mazan		Sr. Vice President

Michael J. Salamon		Sr. Vice President

Paul R. Henry		Sr. Vice President

David Samuel		Executive Vice President

John T. Loh		Sr. Vice President

Thecla E. Sweeney		Vice President

Irfhan Rawji		Vice President

Bryan Rocco		Vice President

William C. Stevens		Vice President

Matthew Kunica		Vice President