CONSTELLATION SOFTWARE INC

10% owner at Sabre Corp · on record since Mar 30, 2026
10% owner at MEDIWARE INFORMATION SYSTEMS INC · on record since Mar 23, 2010

Insider trading activity of CONSTELLATION SOFTWARE INC

Transactions on record: 83; since Jul 16, 2010

Open-market buys: 8; $13.5M

Open-market sells: 75; $4.8M

Companies traded: 2; last filing Mar 3, 2026

Figures computed from official regulatory filings — .

Companies where CONSTELLATION SOFTWARE INC has traded

Sabre Corp1 tx · $12.3M · Mar 3, 2026
MEDIWARE INFORMATION SYSTEMS INC82 tx · $6M · Apr 24, 2012

Track record of CONSTELLATION SOFTWARE INC

Statistical track record

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Open-market buys: 8

Last buy: Feb 27, 2026

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Transaction history of CONSTELLATION SOFTWARE INC

Co-insiders of CONSTELLATION SOFTWARE INC

Alt Alexander SSabre Corp
ANDERSON CLINTONSabre Corp
AURIANA LAWRENCEMEDIWARE INFORMATION SYSTEMS INC
Barnett Douglas ESabre Corp
BARRY GEORGE JMEDIWARE INFORMATION SYSTEMS INC

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Sabre CorpListing on record	Mar 3, 2026	Buy	10,634,702	1.16 USD	$12.3M	conv 72Unusual sizeFirst in 12mo	SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Apr 24, 2012	Sell	-661	15.02 USD	$9.9K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Apr 24, 2012	Sell	-250	15.07 USD	$3.8K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Apr 20, 2012	Sell	-500	15.10 USD	$7.6K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Apr 20, 2012	Sell	-197	15.05 USD	$3K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Apr 3, 2012	Sell	-51	14.90 USD	$759.9		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Apr 3, 2012	Sell	-2,000	14.92 USD	$29.8K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 23, 2012	Sell	-600	15.10 USD	$9.1K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 23, 2012	Sell	-2,100	14.92 USD	$31.3K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 23, 2012	Sell	-500	15.00 USD	$7.5K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 16, 2012	Sell	-1,000	15.10 USD	$15.1K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 16, 2012	Sell	-1,005	15.01 USD	$15.1K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 14, 2012	Sell	-704	15.20 USD	$10.7K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 14, 2012	Sell	-1,103	15.20 USD	$16.8K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 12, 2012	Sell	-6,500	15.23 USD	$99K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 23, 2012	Sell	-1,000	14.97 USD	$15K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 23, 2012	Sell	-1,480	15.02 USD	$22.2K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 23, 2012	Sell	-12,186	14.99 USD	$182.7K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 17, 2012	Sell	-7,079	14.35 USD	$101.6K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 17, 2012	Sell	-1,089	14.30 USD	$15.6K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 15, 2012	Sell	-5,678	13.68 USD	$77.7K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 15, 2012	Sell	-5,013	13.59 USD	$68.1K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 14, 2012	Sell	-15,200	13.79 USD	$209.6K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 14, 2012	Sell	-42,100	13.64 USD	$574.2K	Unusual size	SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 14, 2012	Sell	-15,000	13.76 USD	$206.4K		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
Sabre CorpListing on record	Mar 3, 2026	Buy	10,634,702	1.16 USD	$12.3M	conv 72Unusual sizeFirst in 12mo	SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Apr 24, 2012	Sell	-661	15.02 USD	$9.9K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Apr 24, 2012	Sell	-250	15.07 USD	$3.8K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Apr 20, 2012	Sell	-500	15.10 USD	$7.6K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Apr 20, 2012	Sell	-197	15.05 USD	$3K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Apr 3, 2012	Sell	-51	14.90 USD	$759.9		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Apr 3, 2012	Sell	-2,000	14.92 USD	$29.8K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 23, 2012	Sell	-600	15.10 USD	$9.1K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 23, 2012	Sell	-2,100	14.92 USD	$31.3K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 23, 2012	Sell	-500	15.00 USD	$7.5K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 16, 2012	Sell	-1,000	15.10 USD	$15.1K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 16, 2012	Sell	-1,005	15.01 USD	$15.1K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 14, 2012	Sell	-704	15.20 USD	$10.7K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 14, 2012	Sell	-1,103	15.20 USD	$16.8K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Mar 12, 2012	Sell	-6,500	15.23 USD	$99K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 23, 2012	Sell	-1,000	14.97 USD	$15K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 23, 2012	Sell	-1,480	15.02 USD	$22.2K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 23, 2012	Sell	-12,186	14.99 USD	$182.7K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 17, 2012	Sell	-7,079	14.35 USD	$101.6K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 17, 2012	Sell	-1,089	14.30 USD	$15.6K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 15, 2012	Sell	-5,678	13.68 USD	$77.7K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 15, 2012	Sell	-5,013	13.59 USD	$68.1K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 14, 2012	Sell	-15,200	13.79 USD	$209.6K		SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 14, 2012	Sell	-42,100	13.64 USD	$574.2K	Unusual size	SEC
MEDIWARE INFORMATION SYSTEMS INCListing unverified	Feb 14, 2012	Sell	-15,000	13.76 USD	$206.4K		SEC