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CONSTELLATION SOFTWARE INC

CIK 1113678 · last filed 2026-03-03

CONSTELLATION SOFTWARE INC is a corporate insider who has filed 39 SEC Form 4 insider transactions across 2 companies since 2010. The most recent filing shows the insider bought $12.3M of SABR on Mar 3, 2026. Across all open-market trades the lifetime net is +$8.7M, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $106.8M across reported positions. The firm reports its address in Toronto. 2 SEC filings were submitted jointly with Constellation Canadian Holdings Inc.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$106.84M

Companies

2

Total Filings

39

Lifetime Open-Market Net

$8.72M

Filer Profile

Reported Address
66 WELLINGTON STREET WEST, SUITE 5300
TD BANK TOWER
TORONTO M5K 1E6
Phone
(416) 861-2281
State of Incorporation
Ontario, Canada
Related Filers
Constellation Canadian Holdings Inc. — 2 joint filings, latest 2026-03-30
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
SABR 10%+ Owner 50,157,523 $2.13 $106.84M $12.34M 1 2026-03-03
MEDIWARE INFORMATION SYSTEMS INC (MEDW) Delisted 10%+ Owner 1,492,316 — — -$3.62M 38 2012-04-24

Recent Filings

39 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-03-03 SABR Buy (P) +10,634,702 $12.34M EDGAR
2012-04-24 MEDIWARE INFORMATION SYSTEMS INC (MEDW) Delisted Sell (S) −911 -$13.7K EDGAR
2012-04-20 MEDIWARE INFORMATION SYSTEMS INC (MEDW) Delisted Sell (S) −697 -$10.5K EDGAR
2012-04-03 MEDIWARE INFORMATION SYSTEMS INC (MEDW) Delisted Sell (S) −2,051 -$30.6K EDGAR
2012-03-23 MEDIWARE INFORMATION SYSTEMS INC (MEDW) Delisted Sell (S) −3,200 -$47.9K EDGAR
2012-03-16 MEDIWARE INFORMATION SYSTEMS INC (MEDW) Delisted Sell (S) −2,005 -$30.2K EDGAR
2012-03-14 MEDIWARE INFORMATION SYSTEMS INC (MEDW) Delisted Sell (S) −1,807 -$27.5K EDGAR
2012-03-12 MEDIWARE INFORMATION SYSTEMS INC (MEDW) Delisted Sell (S) −6,500 -$99.0K EDGAR
2012-02-23 MEDIWARE INFORMATION SYSTEMS INC (MEDW) Delisted Sell (S) −14,666 -$219.9K EDGAR
2012-02-17 MEDIWARE INFORMATION SYSTEMS INC (MEDW) Delisted Sell (S) −8,168 -$117.2K EDGAR
Showing 1–10 of 39
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.