organization · Reporting owner

MSD SPONSOR HOLDINGS, LLC

Disclosed activity across 1 company

Tapewire entity: 114984
SEC CIK: 0001846753

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Reported relationships

Latest disclosed role at each company.

No relationships currently tracked through insider filings.

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

No balances currently tracked through insider filings.

Past disclosures · reporting ended (1)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

MSD ACQUISITION CORP. / NEW

Report date March 29, 2023 · Filed March 30, 2023

Jointly reported with LEMKAU GREGG, PHELAN JOHN

Section 16 reporting ended · disclosed 2023-03-30. Current position is not established by this disclosure.

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Class B ordinary sharesSEC Table II · derivative / convertible security	Direct	1	Reported balance After 2023-03-29 transaction · row 1 Instrument identity requires review; Table II rows are not merged. 1 source row Row 1 · 2023-03-29 · Other · Acquired 14,224,999 · Balance 1 F1: On March 17, 2023, the Issuer announced that it will not consummate an initial business combination within the time period required. Pursuant to the Issuer's Amended and Restated Memorandum and Articles of Association (the "Articles") and in connection with the winding up of the Issuer, the Class B ordinary shares, par value $0.0001, held by MSD Sponsor Holdings, LLC (the "Sponsor") were surrendered for no compensation on March 29, 2023. F2: This Form 4 is being filed by the Sponsor. The Class B ordinary shares are held in the name of the Sponsor. The Sponsor is managed by a board of managers comprised of Gregg Lemkau, John Phelan and Robert Platek, who control the Sponsor. Accordingly, Messrs. Lemkau, Phelan and Platek have voting and investment discretion with respect to the securities held by the Sponsor, and may be deemed to have beneficial ownership of the securities held directly by the Sponsor. Each of Messrs. Lemkau, Phelan and Platek disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein.

Filing footnotes · ownership attribution and instrument terms

F1: On March 17, 2023, the Issuer announced that it will not consummate an initial business combination within the time period required. Pursuant to the Issuer's Amended and Restated Memorandum and Articles of Association (the "Articles") and in connection with the winding up of the Issuer, the Class B ordinary shares, par value $0.0001, held by MSD Sponsor Holdings, LLC (the "Sponsor") were surrendered for no compensation on March 29, 2023.

F2: This Form 4 is being filed by the Sponsor. The Class B ordinary shares are held in the name of the Sponsor. The Sponsor is managed by a board of managers comprised of Gregg Lemkau, John Phelan and Robert Platek, who control the Sponsor. Accordingly, Messrs. Lemkau, Phelan and Platek have voting and investment discretion with respect to the securities held by the Sponsor, and may be deemed to have beneficial ownership of the securities held directly by the Sponsor. Each of Messrs. Lemkau, Phelan and Platek disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein.

Transaction history

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction date	Company	Activity / security	Shares / units	Reported price	Reported value	Details
March 29, 2023 Filed Mar 30, 2023 16:05 UTC	MSD ACQUISITION CORP. / NEW MSDA · Entity 114966	OtherClass B ordinary shares · Derivative	14,224,999	Not disclosed	Not disclosed	Disclosure SEC source: 0001213900-23-024623 · ownership.xml · derivative · entry 1 MSD SPONSOR HOLDINGS, LLC · CIK 0001846753 · 10% owner LEMKAU GREGG · CIK 0001846894 · Director · Chief Executive Officer · 10% owner PHELAN JOHN · CIK 0001119294 · Director · 10% owner Joint disclosure: these amounts are not allocated separately to each reporting owner. 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1 Underlying: Class A ordinary shares · 14,224,999 shares Expires not disclosed F1 · derivative.exercise_price: On March 17, 2023, the Issuer announced that it will not consummate an initial business combination within the time period required. Pursuant to the Issuer's Amended and Restated Memorandum and Articles of Association (the "Articles") and in connection with the winding up of the Issuer, the Class B ordinary shares, par value $0.0001, held by MSD Sponsor Holdings, LLC (the "Sponsor") were surrendered for no compensation on March 29, 2023. F1 · price: On March 17, 2023, the Issuer announced that it will not consummate an initial business combination within the time period required. Pursuant to the Issuer's Amended and Restated Memorandum and Articles of Association (the "Articles") and in connection with the winding up of the Issuer, the Class B ordinary shares, par value $0.0001, held by MSD Sponsor Holdings, LLC (the "Sponsor") were surrendered for no compensation on March 29, 2023. F1 · derivative.exercise_date: On March 17, 2023, the Issuer announced that it will not consummate an initial business combination within the time period required. Pursuant to the Issuer's Amended and Restated Memorandum and Articles of Association (the "Articles") and in connection with the winding up of the Issuer, the Class B ordinary shares, par value $0.0001, held by MSD Sponsor Holdings, LLC (the "Sponsor") were surrendered for no compensation on March 29, 2023. F1 · derivative.expiration_date: On March 17, 2023, the Issuer announced that it will not consummate an initial business combination within the time period required. Pursuant to the Issuer's Amended and Restated Memorandum and Articles of Association (the "Articles") and in connection with the winding up of the Issuer, the Class B ordinary shares, par value $0.0001, held by MSD Sponsor Holdings, LLC (the "Sponsor") were surrendered for no compensation on March 29, 2023. F2 · ownership.direct: This Form 4 is being filed by the Sponsor. The Class B ordinary shares are held in the name of the Sponsor. The Sponsor is managed by a board of managers comprised of Gregg Lemkau, John Phelan and Robert Platek, who control the Sponsor. Accordingly, Messrs. Lemkau, Phelan and Platek have voting and investment discretion with respect to the securities held by the Sponsor, and may be deemed to have beneficial ownership of the securities held directly by the Sponsor. Each of Messrs. Lemkau, Phelan and Platek disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein. Read SEC document
February 14, 2022 Filed Feb 16, 2022 16:42 UTC	MSD ACQUISITION CORP. / NEW MSDA · Entity 114966	PurchaseClass B ordinary shares · Derivative	25,000	$0.00	$50.00	Disclosure SEC source: 0001062993-22-004611 · form4.xml · derivative · entry 1 MSD SPONSOR HOLDINGS, LLC · CIK 0001846753 · 10% owner 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 14,250,000 Underlying: Class A ordinary shares · 25,000 shares Expires not disclosed F1 · derivative.exercise_price: As described in the issuer's registration statement on Form S-1 (File No. 333-253316) under the heading "Description of Securities-Founder Shares", the Class B ordinary shares, par value $0.0001, will automatically convert into Class A ordinary shares, par value $0.0001, of the issuer at the time of the issuer's initial business combination transaction on a one-for-one basis, subject to adjustment for share splits, share capitalizations, reorganizations, recapitalizations and the like, and certain anti-dilution rights and have no expiration date. F1 · derivative.exercise_date: As described in the issuer's registration statement on Form S-1 (File No. 333-253316) under the heading "Description of Securities-Founder Shares", the Class B ordinary shares, par value $0.0001, will automatically convert into Class A ordinary shares, par value $0.0001, of the issuer at the time of the issuer's initial business combination transaction on a one-for-one basis, subject to adjustment for share splits, share capitalizations, reorganizations, recapitalizations and the like, and certain anti-dilution rights and have no expiration date. F1 · derivative.expiration_date: As described in the issuer's registration statement on Form S-1 (File No. 333-253316) under the heading "Description of Securities-Founder Shares", the Class B ordinary shares, par value $0.0001, will automatically convert into Class A ordinary shares, par value $0.0001, of the issuer at the time of the issuer's initial business combination transaction on a one-for-one basis, subject to adjustment for share splits, share capitalizations, reorganizations, recapitalizations and the like, and certain anti-dilution rights and have no expiration date. F2 · ownership.direct: This Form 4 is being filed by MSD Sponsor Holdings, LLC, sponsor of the issuer (the "Sponsor"). The Sponsor is managed by a board of managers comprised of Gregg Lemkau, John Phelan and Robert Platek, who control the Sponsor. Accordingly, Messrs. Lemkau, Phelan and Platek have voting and investment discretion with respect to the securities held by the Sponsor, and may be deemed to have beneficial ownership of the securities held directly by the Sponsor. Each of Messrs. Lemkau, Phelan and Platek disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein. Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.