CONSTELLATION SOFTWARE INC - 27 Feb 2026 Form 4/A - Amendment Insider Report for Sabre Corp (SABR)

Reporting relationship: 10%+ Owner
Issuer ticker: SABR
Reported as of: 27 Feb 2026
Net transaction value: +$12,341,572
SEC form: 4/A - Amendment
Accepted by SEC: 30 Mar 2026, 20:04:26 UTC
Original report date: 03 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Constellation Software Inc., By Mark Dennison, Secretary and General Counsel

Key filing fact

CONSTELLATION SOFTWARE INC filed Form 4/A - Amendment for Sabre Corp (SABR) on 30 Mar 2026.

Key facts

This page summarizes CONSTELLATION SOFTWARE INC's Form 4/A - Amendment filing for Sabre Corp (SABR).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 30 Mar 2026, 20:04.

Change

No earlier filing in this sequence is available for direct comparison.
Current net transaction value: +$12,341,572.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4/A - Amendment disclosures.

View source filing

Reporting Owners (3)

CIK 0001113678 Primary reporting owner

CONSTELLATION SOFTWARE INC

Relationship: 10%+ Owner
Address: 66 WELLINGTON STREET WEST, SUITE 5300, TD BANK TOWER, TORONTO, ONTARIO, CANADA
Signature: /s/ Constellation Software Inc., By Mark Dennison, Secretary and General Counsel
Signature date: 30 Mar 2026

CIK 0002120544

Constellation Canadian Holdings Inc.

Relationship: 10%+ Owner
Address: 66 WELLINGTON STREET WEST, SUITE 5300, TD BANK TOWER, TORONTO, ONTARIO, CANADA
Signature: /s/ Constellation Canadian Holdings Inc., By Jamal Baksh, Chief Financial Officer
Signature date: 30 Mar 2026

CIK 0002123494

Miller Mark Robert

Relationship: 10%+ Owner
Address: 66 WELLINGTON STREET WEST, SUITE 5300, TD BANK TOWER, TORONTO, ONTARIO, CANADA
Signature: /s/ Mark Miller
Signature date: 30 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SABR transaction

Common Stock, $0.01 par value

Purchase

Transaction value: $12,341,572
Shares: +10,634,702
Change %: +27%
Price: $1.16
Shares after: 50,157,523
Date: 27 Feb 2026
Ownership: Direct
Footnotes: F1, F2, F3

SABR transaction

Common Stock, $0.01 par value

Purchase

Transaction value: $12,341,572
Shares: +10,634,702
Change %: +27%
Price: $1.16
Shares after: 50,157,523
Date: 27 Feb 2026
Ownership: Direct
Footnotes: F1, F2, F3

SABR transaction

Common Stock, $0.01 par value

Purchase

Transaction value: $12,341,572
Shares: +10,634,702
Change %: +27%
Price: $1.16
Shares after: 50,157,523
Date: 27 Feb 2026
Ownership: Direct
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

This Form 4 is filed jointly by Constellation Software Inc ("Constellation Software"), Constellation Canadian Holdings Inc. ("Constellation Holdings"), and Mark Miller (collectively, the "Reporting Persons"). The EDGAR filing codes for Constellation Holdings and Mark Miller were not available at the time of this required filing, and the Reporting Persons intend to amend this Form 3 to include such Reporting Persons in the filing when such codes are available. Each Reporting Person disclaims beneficial ownership of the securities of the Issuer reported herein except to the extent of his or its pecuniary interest therein, and this report shall not be deemed to be an admission that any Reporting Person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose.

Footnote F2

Securities owned directly by Constellation Holdings. As the direct parent company of Constellation Holdings, Constellation Software may be deemed to beneficially own the securities owned directly by Constellation Holdings. Mr. Miller, as the President of Constellation Software, may be deemed to beneficially own the securities owned directly by Constellation Holdings.

Footnote F3

The reported price represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $1.07 to $1.24 per share. The Reporting Persons undertake to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.

SEC remarks

This Form 4 is being amended to add each of Constellation Canadian Holdings Inc. and Mr. Miller as a reporting person upon receipt of their EDGAR codes.