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Merger clearances (HSR)
Mergers and acquisitions the FTC and Justice Department cleared early under the Hart-Scott-Rodino Act, with the public companies among them. Granted requests only.
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.
Source and freshness · Information, not investment advice (disclaimer).
Early terminations granted per month, last 24 months
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
Showing: ticker WMB
Only early terminations that were granted are listed, not every deal, and none were granted between February 2021 and February 2025.
| Granted | BuyerThe "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. | Transaction | Source |
|---|---|---|---|---|
| Dec 19, 2025 | Chubu Electric Power Co., Inc. | The Williams Companies, Inc. South Mansfield E&P, LLC | 20260431 | FTC ↗ |
| Dec 19, 2025 | Tokyo Electric Power Company Holdings, Inc. | The Williams Companies, Inc. South Mansfield E&P, LLC | 20260430 | FTC ↗ |
| Dec 11, 2018 | NHIP II Bison Holdings, LLC | The Williams Companies, Inc. Williams Wrangler Midstream LLC; Texas Wrangler Midstream LLC | 20190456 | FTC ↗ |
| Aug 20, 2018 | Jeffery D. Hildebrand | The Williams Companies, Inc Williams Four Corners LLC | 20181836 | FTC ↗ |
| Jul 27, 2018 | The Williams Companies, Inc. | TPG Growth III de Aiv II, L.P. Discovery DJ Services, LLC | 20181636 | FTC ↗ |
| May 1, 2017 | Mubadala Investment Company PJSC | The Williams Companies Inc. Williams Olefins, L.L.C. | 20171068 | FTC ↗ |
| Mar 6, 2017 | The Williams Companies, Inc. | Anadarko Petroleum Corporation WGR Operating, LP | 20170775 | FTC ↗ |
| Mar 6, 2017 | Anadarko Petroleum Corporation | The Williams Companies, Inc. Williams Midstream Gas Services LLC | 20170774 | FTC ↗ |
| May 8, 2015 | The Williams Companies, Inc | Utica East Ohio Midstream LLC | 20150886 | FTC ↗ |
| Jun 30, 2014 | The Williams Companies, Inc. | Access Midstream Partners, L.P. | 20141124 | FTC ↗ |
| Jan 16, 2014 | Eric Mandelblatt c/o Soroban Capital Partners LLC | The Williams Companies, Inc. | 20140392 | FTC ↗ |
| Aug 17, 2012 | The Williams Companies, Inc. | Explorer Pipeline Company | 20121221 | FTC ↗ |
| Apr 6, 2012 | The Williams Companies, Inc. | Caiman Energy, LLC Caiman Eastern Midstream, LLC | 20120681 | FTC ↗ |
| Dec 23, 2011 | The Williams Companies, Inc. | ASP V Alternative Investments, L.P. Catskills Express Pipeline Company; Codorniz Parent, LLC and 1 more | 20120261 | FTC ↗ |
| May 17, 2011 | The Williams Companies, Inc. | BP P.L.C. Arco Midcon LLC | 20110845 | FTC ↗ |
| Nov 30, 2010 | The Williams Companies, Inc | Cabot Oil & Gas Corporation | 20110249 | FTC ↗ |
| Jan 25, 2010 | The Williams Companies, Inc. | Williams Partners L.P. | 20100355 | FTC ↗ |
| Apr 24, 2009 | Williams Companies, Inc. | Atlas Pipeline Partners, L.P. Atlas Pipeline McKean, LLC; Atlas Pipeline New York, LLC and 2 more | 20090393 | FTC ↗ |
| Oct 24, 2008 | Icahn Partners Master Fund II LP | The Williams Companies, Inc. | 20090028 | FTC ↗ |
| Oct 24, 2008 | Carl C. Icahn | The Williams Companies, Inc. | 20090027 | FTC ↗ |
| Nov 19, 2007 | Williams Partners L.P. | The Williams Companies Inc. Wamsutter LLC | 20080176 | FTC ↗ |
| Jun 22, 2007 | The Williams Companies, Inc. | BASF Aktiengesellschaft BASF Corporation | 20071541 | FTC ↗ |
| Jun 20, 2007 | The Bear Stearns Companies Inc. | The Williams Companies, Inc. Williams Power Company, Inc. | 20071531 | FTC ↗ |
| Nov 21, 2006 | Williams Partners L.P. | The Williams Companies, Inc. Williams Four Corners LLC | 20070243 | FTC ↗ |
| Dec 22, 2003 | Koch Industries, Inc. | The Williams Companies, Inc. Williams Alaska Petroleum, Inc.; Williams Alaska Pipeline Company, L.… and 1 more | 20040223 | FTC ↗ |
| Apr 29, 2003 | Loews Corporation | The Williams Companies, Inc. Texas Gas Transmission Corporation | 20030560 | FTC ↗ |
| Dec 13, 2002 | The Williams Companies, Inc. | The Williams Companies, Inc. Gulf Liquids Holdings LLC | 20030195 | FTC ↗ |
| Oct 24, 2002 | AIG Highstar Capital, L.P. | The Williams Companies, Inc. Western Frontier Pipeline Company, LLC; Williams Gas Pipelines Centra… | 20021205 | FTC ↗ |
| Sep 20, 2002 | Hoosier Energy Rural Electric Cooperative, Inc. | The Williams Companies, Inc. Williams Energy Marketing & Trading Company | 20021173 | FTC ↗ |
| Jul 9, 2002 | General Electric Company | The Williams Companies, Inc. Williams Gas Processing - Kansas Hugoton Company | 20020931 | FTC ↗ |
| Mar 12, 2002 | MidAmerican Energy Holdings Company | The Williams Companies, Inc. Kern River Gas Transmission Company | 20020498 | FTC ↗ |
| Dec 10, 2001 | Enbridge Inc. | Williams Companies, Inc. Goebel Gathering Company, L.L.C.; Transcontinental Gas Pipe Line Corp… and 1 more | 20020141 | FTC ↗ |
| Nov 19, 2001 | Duke Energy Company | The Williams Companies, Inc. NEWCO LLC | 20020106 | FTC ↗ |
| Nov 19, 2001 | The Williams Companies, Inc. | Duke Energy Corporation Duke Energy Field Services, LP. | 20020105 | FTC ↗ |
| May 30, 2001 | The Williams Companies, Inc. | Barrett Resources Corporation | 20011858 | FTC ↗ |
| Apr 30, 2001 | Mr. Yizhak Sharon | The Williams Companies, Inc. Mapco Express, Inc. | 20011749 | FTC ↗ |
| Feb 27, 2001 | Tom T. Gores | The Williams Companies, Inc. Williams Communications Solutions, LLC | 20011511 | FTC ↗ |
| Aug 28, 2000 | The Williams Companies, Inc. | Stanford N. Phelps Wyatt Energy, Incorporated; Wyco New Haven, Inc and 1 more | 20004373 | FTC ↗ |
| May 31, 2000 | The Williams Companies, Inc. | Cantor Fitzgerald, L.P. eSpeed, Inc. | 20003179 | FTC ↗ |
| May 11, 2000 | The Williams Companies, Inc. | SBC Communications Inc. SBAC possible match SBCI-Pacific Networks, Inc. | 20002887 | FTC ↗ |
| Sep 28, 1999 | FirstEnergy Corp. | The Williams Companies, Inc. Volunteer Energy, L.L.C. | 19994391 | FTC ↗ |
| Jul 29, 1999 | Genesys, S.A. | The Williams Companies, Inc. Conference Acquisition Corporation | 19993595 | FTC ↗ |
| Jul 2, 1999 | Intel Corporation | The Williams Companies, Inc. Williams Communications Group, Inc. (Debtor-in-Possession) | 19993240 | FTC ↗ |
| Jun 23, 1999 | SBC Communications, Inc. SBAC possible match | The Williams Companies, Inc. Williams Communications Group, Inc. (Debtor-in-Possession) | 19993052 | FTC ↗ |
| Jun 23, 1999 | Telefonos de Mexico, S.A. de C.V. | The Williams Companies, Inc. The Williams Communications Group, Inc. | 19993127 | FTC ↗ |
| Mar 9, 1999 | The Williams Companies, Inc. | Atlantic Richfield Company Union Texas Petrochemicals Corporation | 19991718 | FTC ↗ |
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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