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Concord Acquisition Corp II

CNDA
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SEC CIK
0001851959

No open-market purchases or sales by Concord Acquisition Corp II insiders were filed in the last 90 days; no institution reported holding it in 13F filings for Q2 2026; no superinvestor holds it.

Other share classesCNDAUCNDAW

Holders of 5% or more of CNDA

Holders whose latest Schedule 13D or 13G filing reports 5% or more of Concord Acquisition Corp II, largest stake first. The change is against the holder's previous filing.

No holder currently reports owning 5% or more of Concord Acquisition Corp II on Schedule 13D or 13G.

Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.

13D and 13G filings

53 Schedule 13D and 13G filings on Concord Acquisition Corp II, newest first, including old-format filings without a stake.

Schedule 13D and 13G filings on CNDA
Filed (ET)FilerFormStakeChangeEvent dateFiling
Jun 6, 20254:10 PM ETMorgan Stanleyand 1 other13G/A0.00%0 shares–Below 5%May 30, 2025SEC
May 15, 20254:14 PM ETSandia Investment Management LPand 1 other13G/A0.00%0 shares−5.10 ppfrom 5.10%Below 5%Mar 31, 2025SEC
May 13, 20259:58 AM ETPeriscope Capital Inc.13G/A0.00%0 shares0.00 ppfrom 0.00%Below 5%Mar 31, 2025SEC
May 12, 20255:01 PM ETTD Securities (USA) LLCand 3 others13G/A0.00%0 shares0.00 ppfrom 0.00%Below 5%Mar 31, 2025SEC
May 12, 202510:38 AM ETPeriscope Capital Inc.13G/A0.00%0 shares−6.70 ppfrom 6.70%Below 5%Mar 31, 2025SEC
Apr 7, 20254:06 PM ETKarpus Management, Inc.13G/A0.00%0 shares–Below 5%Mar 31, 2025SEC
Feb 14, 20254:06 PM ETSandia Investment Management LPand 1 other13G/A5.10%112.3K shares−3.40 ppfrom 8.50%Dec 31, 2024SEC
Feb 14, 20254:04 PM ETSandia Investment Management LPand 1 other13G8.50%186.3K sharesNewSep 30, 2024SEC
Feb 13, 20252:32 PM ETPeriscope Capital Inc.13G/A6.70%148.2K shares–Dec 31, 2024SEC
Feb 13, 202512:00 PM ETTD Securities (USA) LLCand 3 others13G0.00%151.1K sharesNewBelow 5%Dec 31, 2024SEC
Nov 14, 2024Westchester Capital Management, LLC13G/AOld format–––SEC
Nov 13, 2024Periscope Capital Inc.13G/AOld format–––SEC
Nov 13, 2024Karpus Management, Inc.13GOld format–New–SEC
Nov 12, 2024Harraden Circle Investments, LLC13G/AOld format–––SEC
Nov 6, 2024Kepos Capital LP13G/AOld format–––SEC
Nov 6, 2024Morgan Stanley13GOld format–New–SEC
Jul 10, 2024Vivaldi Asset Management, LLC13G/AOld format–––SEC
Jun 12, 2024Harraden Circle Investments, LLC13GOld format–––SEC
Feb 14, 2024Westchester Capital Management, LLC13GOld format–New–SEC
Feb 14, 2024683 Capital Management, LLC13G/AOld format–––SEC
Feb 14, 2024Marshall Wace, LLP13G/AOld format–––SEC
Feb 12, 2024Cantor Fitzgerald Securities13G/AOld format–––SEC
Feb 12, 2024Arena Capital Advisors, LLC- CA13G/AOld format–––SEC
Feb 9, 2024Spring Creek Capital LLC13G/AOld format–––SEC
Feb 9, 2024Periscope Capital Inc.13GOld format–New–SEC
Jan 31, 2024Harraden Circle Investments, LLC13G/AOld format–––SEC
Jan 26, 2024Kepos Capital LP13GOld format–New–SEC
Jan 25, 2024Magnetar Financial LLC13G/AOld format–––SEC
Dec 28, 2023Sea Otter Advisors LLC13G/AOld format–––SEC
Sep 11, 2023Vivaldi Asset Management, LLC13G/AOld format–––SEC
Sep 6, 2023Sea Otter Advisors LLC13G/AOld format–––SEC
Aug 28, 2023Harraden Circle Investments, LLC13GOld format–New–SEC
Aug 24, 2023Sea Otter Advisors LLC13GOld format–New–SEC
May 10, 2023Vivaldi Asset Management, LLC13GOld format–New–SEC
Feb 14, 2023Sculptor Capital LP13G/AOld format–––SEC
Feb 14, 2023Citadel Advisors LLC13G/AOld format–––SEC
Feb 14, 2023Marshall Wace, LLP13GOld format–New–SEC
Feb 13, 2023Arena Capital Advisors, LLC- CA13G/AOld format–––SEC
Feb 10, 2023Beryl Capital Management LLC13G/AOld format–––SEC
Feb 2, 2023Magnetar Financial LLC13G/AOld format–––SEC
Jun 3, 2022Cantor Fitzgerald Securities13GOld format–New–SEC
Feb 14, 2022Arena Capital Advisors, LLC- CA13GOld format–New–SEC
Feb 14, 2022Concord Sponsor Group II LLC13GOld format–New–SEC
Feb 14, 2022Citadel Advisors LLC13G/AOld format–––SEC
Feb 11, 2022Sculptor Capital LP13G/AOld format–––SEC
Feb 11, 2022Beryl Capital Management LLC13G/AOld format–––SEC
Feb 9, 2022Spring Creek Capital LLC13G/AOld format–––SEC
Feb 4, 2022Magnetar Financial LLC13GOld format–New–SEC
Dec 17, 2021Citadel Advisors LLC13GOld format–New–SEC
Oct 26, 2021683 Capital Management, LLC13GOld format–New–SEC

Form 144: proposed insider sales

Notices from officers, directors and other affiliates planning to sell Concord Acquisition Corp II shares.

No Form 144 notices for Concord Acquisition Corp II are on file.