About this data
What it is
Companies planning a merger or acquisition above a size threshold must tell the FTC and the Justice Department first and wait 30 days before closing (the Hart-Scott-Rodino Act). The parties can ask for that wait to end early, and when the agencies agree, the FTC publishes an early termination notice. This feed lists those notices: the buyer, the target, the entities being acquired and the day early termination was granted. We match each name to a public company when it lines up.
Who files it
The FTC, which publishes a notice once it and the Department of Justice have granted the request.
How current
We check the FTC's list every day. A notice is published when early termination is granted, which is before the deal closes.
Terms
Hart-Scott-RodinoThe Hart-Scott-Rodino Act requires companies planning a merger or acquisition above a size threshold to tell the FTC and the Justice Department first and wait 30 days before closing, so the agencies can look for competition problems.Early terminationThe parties can ask for that waiting period to end sooner. When the agencies agree, the FTC publishes an early termination notice. It means the deal was cleared to close early, not that the agencies endorse it.Possible matchWe match each name to a public company automatically. A name that matches closely is shown as a company; a looser match is marked "possible match" because a similar name, a subsidiary or a differently spelled name can be matched wrongly. Most parties are private companies and funds and have no match.
Worth knowing
This is a partial list of deals, not every merger. Only requests that were granted appear: deals that waited out the full 30 days, deals whose request was refused and deals that were never reportable are not listed. The FTC granted no early terminations from February 2021 until the new HSR form took effect in February 2025, so there is nothing between those dates. A notice does not mean the agencies endorse a deal, and it does not say whether the deal closed. Most buyers and targets are private companies, funds or people. We match names to public companies automatically; a looser match is marked "possible match" because a similar name, a subsidiary or a differently spelled name can be matched wrongly.

This comes from the FTC's list of early-termination notices.

Early terminations granted per month, last 24 months

050100150Dec '24 · Early terminations granted: 0Dec '24Jan '25 · Early terminations granted: 0Feb '25 · Early terminations granted: 0Mar '25 · Early terminations granted: 9Mar '25Apr '25 · Early terminations granted: 17May '25 · Early terminations granted: 32Jun '25 · Early terminations granted: 49Jun '25Jul '25 · Early terminations granted: 35Aug '25 · Early terminations granted: 58Sep '25 · Early terminations granted: 54Sep '25Oct '25 · Early terminations granted: 2Nov '25 · Early terminations granted: 3Dec '25 · Early terminations granted: 122Dec '25Jan '26 · Early terminations granted: 60Feb '26 · Early terminations granted: 48Mar '26 · Early terminations granted: 80Mar '26Apr '26 · Early terminations granted: 89May '26 · Early terminations granted: 37Jun '26 · Early terminations granted: 65Jun '26Jul '26 · Early terminations granted: 65Aug '26 · Early terminations granted: 79Sep '26 · Early terminations granted: 86Sep '26Oct '26 · Early terminations granted: 62Nov '26 · Early terminations granted: 21
050100150Dec '24 · Early terminations granted: 0Dec '24Jan '25 · Early terminations granted: 0Feb '25 · Early terminations granted: 0Mar '25 · Early terminations granted: 9Mar '25Apr '25 · Early terminations granted: 17May '25 · Early terminations granted: 32Jun '25 · Early terminations granted: 49Jun '25Jul '25 · Early terminations granted: 35Aug '25 · Early terminations granted: 58Sep '25 · Early terminations granted: 54Sep '25Oct '25 · Early terminations granted: 2Nov '25 · Early terminations granted: 3Dec '25 · Early terminations granted: 122Dec '25Jan '26 · Early terminations granted: 60Feb '26 · Early terminations granted: 48Mar '26 · Early terminations granted: 80Mar '26Apr '26 · Early terminations granted: 89May '26 · Early terminations granted: 37Jun '26 · Early terminations granted: 65Jun '26Jul '26 · Early terminations granted: 65Aug '26 · Early terminations granted: 79Sep '26 · Early terminations granted: 86Sep '26Oct '26 · Early terminations granted: 62Nov '26 · Early terminations granted: 21

Only granted requests are listed, not every deal. The FTC granted none from February 2021 until the new HSR form took effect in February 2025.

Latest early terminations granted

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Showing: ticker WMB

Only early terminations that were granted are listed, not every deal, and none were granted between February 2021 and February 2025.

Latest early terminations granted
GrantedBuyerThe "acquiring person" in the filing: the ultimate parent entity of the buyer, which can be a company, a fund or a person. We match each name to a public company automatically. A name that matches closely is shown as a company; a looser match is marked "possible match" because a similar name, a subsidiary or a differently spelled name can be matched wrongly. Most parties are private companies and funds and have no match.TargetThe "acquired person": the ultimate parent entity of the target. The entities actually being acquired are listed under it.TransactionSource
Dec 19, 2025Chubu Electric Power Co., Inc.The Williams Companies, Inc.
South Mansfield E&P, LLC
20260431FTC ↗
Dec 19, 2025Tokyo Electric Power Company Holdings, Inc.The Williams Companies, Inc.
South Mansfield E&P, LLC
20260430FTC ↗
Dec 11, 2018NHIP II Bison Holdings, LLCThe Williams Companies, Inc.
Williams Wrangler Midstream LLC; Texas Wrangler Midstream LLC
20190456FTC ↗
Aug 20, 2018Jeffery D. HildebrandThe Williams Companies, Inc
Williams Four Corners LLC
20181836FTC ↗
Jul 27, 2018The Williams Companies, Inc.TPG Growth III de Aiv II, L.P.
Discovery DJ Services, LLC
20181636FTC ↗
May 1, 2017Mubadala Investment Company PJSCThe Williams Companies Inc.
Williams Olefins, L.L.C.
20171068FTC ↗
Mar 6, 2017The Williams Companies, Inc.Anadarko Petroleum Corporation
WGR Operating, LP
20170775FTC ↗
Mar 6, 2017Anadarko Petroleum CorporationThe Williams Companies, Inc.
Williams Midstream Gas Services LLC
20170774FTC ↗
May 8, 2015The Williams Companies, IncUtica East Ohio Midstream LLC20150886FTC ↗
Jun 30, 2014The Williams Companies, Inc.Access Midstream Partners, L.P.20141124FTC ↗
Jan 16, 2014Eric Mandelblatt c/o Soroban Capital Partners LLCThe Williams Companies, Inc.20140392FTC ↗
Aug 17, 2012The Williams Companies, Inc.Explorer Pipeline Company20121221FTC ↗
Apr 6, 2012The Williams Companies, Inc.Caiman Energy, LLC
Caiman Eastern Midstream, LLC
20120681FTC ↗
Dec 23, 2011The Williams Companies, Inc.ASP V Alternative Investments, L.P.
Catskills Express Pipeline Company; Codorniz Parent, LLC and 1 more
20120261FTC ↗
May 17, 2011The Williams Companies, Inc.BP P.L.C.
Arco Midcon LLC
20110845FTC ↗
Nov 30, 2010The Williams Companies, IncCabot Oil & Gas Corporation20110249FTC ↗
Jan 25, 2010The Williams Companies, Inc.Williams Partners L.P.20100355FTC ↗
Apr 24, 2009Williams Companies, Inc.Atlas Pipeline Partners, L.P.
Atlas Pipeline McKean, LLC; Atlas Pipeline New York, LLC and 2 more
20090393FTC ↗
Oct 24, 2008Icahn Partners Master Fund II LPThe Williams Companies, Inc.20090028FTC ↗
Oct 24, 2008Carl C. IcahnThe Williams Companies, Inc.20090027FTC ↗
Nov 19, 2007Williams Partners L.P.The Williams Companies Inc.
Wamsutter LLC
20080176FTC ↗
Jun 22, 2007The Williams Companies, Inc.BASF Aktiengesellschaft
BASF Corporation
20071541FTC ↗
Jun 20, 2007The Bear Stearns Companies Inc.The Williams Companies, Inc.
Williams Power Company, Inc.
20071531FTC ↗
Nov 21, 2006Williams Partners L.P.The Williams Companies, Inc.
Williams Four Corners LLC
20070243FTC ↗
Dec 22, 2003Koch Industries, Inc.The Williams Companies, Inc.
Williams Alaska Petroleum, Inc.; Williams Alaska Pipeline Company, L.… and 1 more
20040223FTC ↗
Apr 29, 2003Loews Corporation
L
The Williams Companies, Inc.
Texas Gas Transmission Corporation
20030560FTC ↗
Dec 13, 2002The Williams Companies, Inc.The Williams Companies, Inc.
Gulf Liquids Holdings LLC
20030195FTC ↗
Oct 24, 2002AIG Highstar Capital, L.P.The Williams Companies, Inc.
Western Frontier Pipeline Company, LLC; Williams Gas Pipelines Centra…
20021205FTC ↗
Sep 20, 2002Hoosier Energy Rural Electric Cooperative, Inc.The Williams Companies, Inc.
Williams Energy Marketing & Trading Company
20021173FTC ↗
Jul 9, 2002General Electric CompanyThe Williams Companies, Inc.
Williams Gas Processing - Kansas Hugoton Company
20020931FTC ↗
Mar 12, 2002MidAmerican Energy Holdings CompanyThe Williams Companies, Inc.
Kern River Gas Transmission Company
20020498FTC ↗
Dec 10, 2001Enbridge Inc.Williams Companies, Inc.
Goebel Gathering Company, L.L.C.; Transcontinental Gas Pipe Line Corp… and 1 more
20020141FTC ↗
Nov 19, 2001Duke Energy CompanyThe Williams Companies, Inc.
NEWCO LLC
20020106FTC ↗
Nov 19, 2001The Williams Companies, Inc.Duke Energy Corporation
Duke Energy Field Services, LP.
20020105FTC ↗
May 30, 2001The Williams Companies, Inc.Barrett Resources Corporation20011858FTC ↗
Apr 30, 2001Mr. Yizhak SharonThe Williams Companies, Inc.
Mapco Express, Inc.
20011749FTC ↗
Feb 27, 2001Tom T. GoresThe Williams Companies, Inc.
Williams Communications Solutions, LLC
20011511FTC ↗
Aug 28, 2000The Williams Companies, Inc.Stanford N. Phelps
Wyatt Energy, Incorporated; Wyco New Haven, Inc and 1 more
20004373FTC ↗
May 31, 2000The Williams Companies, Inc.Cantor Fitzgerald, L.P.
eSpeed, Inc.
20003179FTC ↗
May 11, 2000The Williams Companies, Inc.SBC Communications Inc.
SBAC possible match
SBCI-Pacific Networks, Inc.
20002887FTC ↗
Sep 28, 1999FirstEnergy Corp.The Williams Companies, Inc.
Volunteer Energy, L.L.C.
19994391FTC ↗
Jul 29, 1999Genesys, S.A.The Williams Companies, Inc.
Conference Acquisition Corporation
19993595FTC ↗
Jul 2, 1999Intel CorporationThe Williams Companies, Inc.
Williams Communications Group, Inc. (Debtor-in-Possession)
19993240FTC ↗
Jun 23, 1999SBC Communications, Inc.
SBAC possible match
The Williams Companies, Inc.
Williams Communications Group, Inc. (Debtor-in-Possession)
19993052FTC ↗
Jun 23, 1999Telefonos de Mexico, S.A. de C.V.The Williams Companies, Inc.
The Williams Communications Group, Inc.
19993127FTC ↗
Mar 9, 1999The Williams Companies, Inc.Atlantic Richfield Company
Union Texas Petrochemicals Corporation
19991718FTC ↗

46 items, most recent first (up to 50). Each row links to the FTC page that lists the notices; the transaction number identifies it there. Updated Nov 15, 2026, 4:58 PM EST.

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