This case was last updated from U.S. Courts Of Appeals on 10/03/2025 at 15:09:11 (UTC).

Soroban Capital Partners LP v. Commissioner of Internal Revenue

Case Summary

On 08/29/2025 Soroban Capital Partners LP filed a Civil - Tax and Revenue lawsuit against Commissioner of Internal Revenue. This case was filed in U.S. Courts Of Appeals, Court of Appeals for the Second Circuit. The case status is Open.

 

Case Details

  • Case Number:

    25-2079

  • Filing Date:

    08/29/2025

  • Case Status:

    Open

  • Case Type:

    Civil - Tax and Revenue

 

Party Details

Petitioners

SOROBAN CAPITAL PARTNERS GP LLC TAX MATTERS PARTNER

TAX MATTERS PARTNER

SOROBAN CAPITAL PARTNERS LP

Respondent

COMMISSIONER OF INTERNAL REVENUE

Attorney/Law Firm Details

Petitioner Attorneys

Kathleen Gregor

Armando Gomez

Raza Rasheed

Parker Andrew Rider-Longmaid

Shay Dvoretzky

Elizabeth Julia Smith

Respondent Attorneys

Norah Bringer

Francesca Ugolini

 

Court Documents

29 #17

25-2079 029-17 - File Certified Administrative Record - Index.pdf

29 #16

25-2079 029-16 - File Certified Administrative Record - Index.pdf

29 #15

25-2079 029-15 - File Certified Administrative Record - Index.pdf

29 #14

25-2079 029-14 - File Certified Administrative Record - Index.pdf

29 #13

25-2079 029-13 - File Certified Administrative Record - Index.pdf

29 #12

25-2079 029-12 - File Certified Administrative Record - Index.pdf

29 #11

25-2079 029-11 - File Certified Administrative Record - Index.pdf

29 #10

25-2079 029-10 - File Certified Administrative Record - Index.pdf

29 #9

25-2079 029-09 - File Certified Administrative Record - Index.pdf

29 #8

25-2079 029-08 - File Certified Administrative Record - Index.pdf

29 #5

25-2079 029-05 - File Certified Administrative Record - Index.pdf

29 #4

25-2079 029-04 - File Certified Administrative Record - Index.pdf

29 #3

25-2079 029-03 - File Certified Administrative Record - Index.pdf

#10

25-2079 010-01 - Notice of Appearance - Notice of Appearance Substitute or Additional.pdf

#9

25-2079 009-01 - Notice of Appearance - Notice of Appearance Substitute or Additional.pdf

#7

25-2079 007-01 - Notice of Appearance - Notice of Appearance Substitute or Additional.pdf

#4

25-2079 004-01 - District Court fee receipt FILED - District Court fee receipt.pdf

#3

25-2079 003-01 - Tax Court Order RECEIVED - Tax Court Order.pdf

25 More Documents Available

 

Docket Entries

09/23/2025
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Docket(#29) CERTIFIED ADMINISTRATIVE RECORD, FILED [Entered: 09/23/2025 12:21 PM]

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09/19/2025
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Docket(#28) SO-ORDERED SCHEDULING NOTIFICATION, setting Petitioners Soroban Capital Partners GP LLC Tax Matters Partner, Soroban Capital Partners LP's Brief due date as 12/08/2025, Appendix due date as 12/08/2025, FILED. [Entered: 09/19/2025 03:35 PM]

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09/18/2025
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Docket(#27) ORDER, directing appeals 25-2079 and 25-2250 to be heard in tandem, FILED. [Entered: 09/18/2025 01:27 PM]

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09/18/2025
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Docket(#26) NEW CASE MANAGER, Connie Mazariego, ASSIGNED. [Entered: 09/18/2025 01:15 PM]

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09/16/2025

Docket(#25) ATTORNEY, Kathleen Gregor for Appellant Soroban Capital Partners LP, Appellant Soroban Capital Partners GP LLC Tax Matters Partner, ADDED. [Entered: 09/16/2025 04:35 PM]

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09/16/2025

Docket(#24) ATTORNEY, Elizabeth Julia Smith for Appellant Soroban Capital Partners LP, Appellant Soroban Capital Partners GP LLC Tax Matters Partner, ADDED. [Entered: 09/16/2025 04:31 PM]

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09/12/2025
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Docket(#23) NOTICE OF APPEARANCE AS SUBSTITUTE COUNSEL/ADDITIONAL COUNSEL, on behalf of Soroban Capital Partners GP LLC Tax Matters Partner, Soroban Capital Partners LP, FILED. [Entered: 09/12/2025 03:41 PM]

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09/12/2025
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Docket(#22) NOTICE OF APPEARANCE AS SUBSTITUTE COUNSEL/ADDITIONAL COUNSEL, on behalf of Soroban Capital Partners GP LLC Tax Matters Partner, Soroban Capital Partners LP, FILED. [Entered: 09/12/2025 03:37 PM]

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09/12/2025
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Docket(#21) CAMP ORDER, The Courts Order dated September 11, 2025 scheduling a mediation with the Civil Appeals Mediation Program (CAMP) for October 9, 2025 is hereby VACATED, ENTERED. [Entered: 09/12/2025 01:46 PM]

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09/12/2025
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Docket(#20) CAPTION, correcting Appellant Soroban Capital Partners GP LLC Tax Matters Partner's name, AMENDED. [Entered: 09/12/2025 09:21 AM]

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8 More Docket Entries
09/08/2025
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Docket(#10) NOTICE OF APPEARANCE AS SUBSTITUTE COUNSEL/ADDITIONAL COUNSEL, on behalf of Soroban Capital Partner GP LLC Tax Matters Partner, Soroban Capital Partners LP, FILED. [Entered: 09/08/2025 12:18 PM]

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09/08/2025
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Docket(#9) NOTICE OF APPEARANCE AS SUBSTITUTE COUNSEL/ADDITIONAL COUNSEL, on behalf of Soroban Capital Partner GP LLC Tax Matters Partner, Soroban Capital Partners LP, FILED. [Entered: 09/08/2025 12:06 PM]

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09/08/2025

Docket(#8) Party Tax Matters Partner, TERMINATED. [Entered: 09/08/2025 11:31 AM]

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09/08/2025
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Docket(#7) NOTICE OF APPEARANCE AS SUBSTITUTE COUNSEL/ADDITIONAL COUNSEL, on behalf of Commissioner of Internal Revenue, FILED. [Entered: 09/08/2025 09:59 AM]

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08/29/2025

Docket(#6) TAX COURT APPEAL, with copy of tax court docket, on behalf of Appellant Soroban Capital Partner GP LLC, Soroban Capital Partners LP, Tax Matters Partner, received on 08/27/2025, OPENED. [Entered: 08/29/2025 11:47 AM] [Edited: 08/29/2025 11:58 AM]

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08/27/2025

Docket(#5) ELECTRONIC INDEX, in lieu of record, FILED. [Entered: 08/29/2025 11:38 AM] [Edited: 08/29/2025 11:57 AM]

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08/27/2025
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Docket(#4) PAYMENT OF DOCKETING FEE, on behalf of Appellant Soroban Capital Partner GP LLC, Soroban Capital Partners LP, Tax Matters Partner, tax court receipt #204432, FILED. [Entered: 08/29/2025 11:32 AM]

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08/27/2025
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Docket(#3) TAX COURT ORDER AND DECISION, dated 05/28/2025, RECEIVED. [Entered: 08/29/2025 11:28 AM]

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08/27/2025

Docket(#2) TAX COURT MEMORANDUM OPINION, dated 05/28/2025, RECEIVED. [Entered: 08/29/2025 11:26 AM] [Edited: 08/29/2025 11:29 AM]

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08/27/2025

Docket(#1) NOTICE OF TAX COURT APPEAL, with copy of tax court docket, on behalf of Soroban Capital Partner GP LLC, Soroban Capital Partners LP, Tax Matters Partner, FILED. [Entered: 08/29/2025 11:20 AM] [Edited: 08/29/2025 11:52 AM]

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