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[SCHEDULE 13G/A] Lexeo Therapeutics, Inc. SEC Filing

Filing Impact
(Low)
Filing Sentiment
(Neutral)
Form Type
SCHEDULE 13G/A
Rhea-AI Filing Summary

Citadel-linked entities disclose a substantial passive stake in Lexeo Therapeutics (LXEO). Collectively, Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC report beneficial ownership of 5,325,269 shares, representing 9.6% of outstanding shares on a fully calculated basis of 55,718,516 shares (including 1,717,302 shares issuable upon warrant conversion). Citadel Securities entities separately report 8,843 shares. Kenneth Griffin is reported to beneficially own 5,334,112 shares (also 9.6%). The filing states the positions were not acquired to change or influence control and identifies the reporting persons, organization structure and shared voting/dispositive powers.

Soggetti collegati a Citadel comunicano una partecipazione passiva rilevante in Lexeo Therapeutics (LXEO). Insieme, Citadel Advisors LLC, Citadel Advisors Holdings LP e Citadel GP LLC dichiarano la titolarità beneficiaria di 5.325.269 azioni, pari a il 9,6% delle azioni in circolazione su una base totalmente diluita di 55.718.516 azioni (incluse 1.717.302 azioni emettibili a seguito della conversione di warrant). Entità di Citadel Securities riportano separatamente 8.843 azioni. Kenneth Griffin risulta titolare beneficiario di 5.334.112 azioni (anch’egli il 9,6%). La comunicazione precisa che le posizioni non sono state acquisite con l’intento di modificare o influenzare il controllo e indica le persone che presentano la dichiarazione, la struttura organizzativa e i poteri di voto/disposizione condivisi.

Entidades vinculadas a Citadel revelan una participación pasiva considerable en Lexeo Therapeutics (LXEO). En conjunto, Citadel Advisors LLC, Citadel Advisors Holdings LP y Citadel GP LLC informan la propiedad beneficiaria de 5.325.269 acciones, lo que representa el 9,6% de las acciones en circulación sobre una base totalmente diluida de 55.718.516 acciones (incluidas 1.717.302 acciones susceptibles de emitirse por conversión de warrants). Entidades de Citadel Securities informan por separado 8.843 acciones. Se comunica que Kenneth Griffin posee beneficiariamente 5.334.112 acciones (también el 9,6%). El expediente afirma que las posiciones no se adquirieron para cambiar o influir en el control e identifica a las personas informantes, la estructura organizativa y los poderes compartidos de voto/disposición.

시타ë� ê´€ë � 법ì¸ë“¤ì´ 렉시ì˜� í…Œë¼í“¨í‹±ìŠ�(LXEO)ì—� 대í•� ìƒë‹¹í•� 수ë™ì � ì§€ë¶„ì„ ê³µê°œí–ˆìŠµë‹ˆë‹¤. 집계하면 Citadel Advisors LLC, Citadel Advisors Holdings LP ë°� Citadel GP LLCëŠ� 5,325,269주를 실질 소유하고 있다ê³� 보고했으ë©�, ì´ëŠ” 워런íŠ� 전환으로 발행ë� ìˆ� 있는 1,717,302주를 í¬í•¨í•� 완전 í¬ì„ 기준 55,718,516ì£� ì¤� 9.6%ì—� 해당합니ë‹�. Citadel Securities 계열사는 별ë„ë¡� 8,843주를 보고했습니다. Kenneth Griffinì€ 5,334,112ì£�(역시 9.6%)ë¥� 실질 소유í•� 것으ë¡� ë³´ê³ ë©ë‹ˆë‹�. 제출서는 ì´ëŸ¬í•� ì§€ë¶„ì´ ì§€ë°°ê¶Œì� 변경하거나 ì˜í–¥ë ¥ì„ 행사하기 위해 ì·¨ë“ë� ê²ƒì´ ì•„ë‹ˆë¼ê³  ë°ížˆë©�, ë³´ê³  주체, ì¡°ì§ êµ¬ì¡° ë°� ê³µë™ ì˜ê²°/처분 권한ì� 명시하고 있습니다.

Des entités liées à Citadel divulguent une participation passive substantielle dans Lexeo Therapeutics (LXEO). Collectivement, Citadel Advisors LLC, Citadel Advisors Holdings LP et Citadel GP LLC déclarent la propriété bénéficiaire de 5 325 269 actions, représentant 9,6 % des actions en circulation sur une base entièrement diluée de 55 718 516 actions (y compris 1 717 302 actions susceptibles d’être émises en conversion de bons). Des entités de Citadel Securities déclarent séparément 8 843 actions. Kenneth Griffin est déclaré détenteur bénéficiaire de 5 334 112 actions (également 9,6 %). le dépôt indique que ces positions n’ont pas été acquises dans le but de modifier ou d’influencer le contrôle et identifie les déclarants, la structure organisationnelle ainsi que les pouvoirs partagés de vote/disposition.

Mit Citadel verbundene Einheiten legen einen erheblichen passiven Anteil an Lexeo Therapeutics (LXEO) offen. Gemeinsam melden Citadel Advisors LLC, Citadel Advisors Holdings LP und Citadel GP LLC die wirtschaftliche Eigentümerschaft von 5.325.269 Aktien, was 9,6 % der ausstehenden Aktien auf vollständig verwässerter Basis von 55.718.516 Aktien entspricht (einschließlich 1.717.302 Aktien, die bei Wandlung von Warrants ausgebbar sind). Citadel Securities-Einheiten melden separat 8.843 Aktien. Kenneth Griffin wird mit 5.334.112 Aktien wirtschaftlich begünstigt dargestellt (ebenfalls 9,6 %). Die Meldung gibt an, dass die Positionen nicht erworben wurden, um Kontrolle zu ändern oder zu beeinflussen, und nennt die meldenden Personen, die Organisationsstruktur sowie gemeinsame Stimm- und Verfügungsrechte.

Positive
  • Material ownership disclosed: Citadel-affiliated entities report a clear 9.6% beneficial stake in LXEO, improving market transparency
  • Detailed ownership structure: Filing identifies specific entities, shared voting and dispositive powers, and inclusion of shares issuable upon warrant conversion
  • Passive intent certified: Reporting persons certify the holdings were not acquired to change or influence control, consistent with Schedule 13G treatment
Negative
  • None.

Insights

TL;DR: Citadel affiliates disclosed a sizable 9.6% passive stake in LXEO, a material ownership position that increases institutional concentration.

The Schedule 13G shows a nearly 10% position held collectively by Citadel-managed funds and related entities, using a 55.7 million share base that includes convertible warrants. For investors this raises institutional concentration and potential liquidity considerations; the filing characterizes the stake as passive under Section 13(g), which implies no intent to influence control. The precise share counts and shared voting/dispositive powers are disclosed, improving transparency around ownership structure.

TL;DR: A 9.6% disclosure is material for governance monitoring but the filer affirms passive intent under Schedule 13G.

The document identifies the reporting chain (portfolio manager, holding companies, GP entities, and Kenneth Griffin) and quantifies shared voting and dispositive power, which is important for directors and governance committees tracking influential holders. The explicit certification that shares were not acquired to change control reduces immediate takeover or activist signaling, though the position size warrants ongoing disclosure monitoring.

Soggetti collegati a Citadel comunicano una partecipazione passiva rilevante in Lexeo Therapeutics (LXEO). Insieme, Citadel Advisors LLC, Citadel Advisors Holdings LP e Citadel GP LLC dichiarano la titolarità beneficiaria di 5.325.269 azioni, pari a il 9,6% delle azioni in circolazione su una base totalmente diluita di 55.718.516 azioni (incluse 1.717.302 azioni emettibili a seguito della conversione di warrant). Entità di Citadel Securities riportano separatamente 8.843 azioni. Kenneth Griffin risulta titolare beneficiario di 5.334.112 azioni (anch’egli il 9,6%). La comunicazione precisa che le posizioni non sono state acquisite con l’intento di modificare o influenzare il controllo e indica le persone che presentano la dichiarazione, la struttura organizzativa e i poteri di voto/disposizione condivisi.

Entidades vinculadas a Citadel revelan una participación pasiva considerable en Lexeo Therapeutics (LXEO). En conjunto, Citadel Advisors LLC, Citadel Advisors Holdings LP y Citadel GP LLC informan la propiedad beneficiaria de 5.325.269 acciones, lo que representa el 9,6% de las acciones en circulación sobre una base totalmente diluida de 55.718.516 acciones (incluidas 1.717.302 acciones susceptibles de emitirse por conversión de warrants). Entidades de Citadel Securities informan por separado 8.843 acciones. Se comunica que Kenneth Griffin posee beneficiariamente 5.334.112 acciones (también el 9,6%). El expediente afirma que las posiciones no se adquirieron para cambiar o influir en el control e identifica a las personas informantes, la estructura organizativa y los poderes compartidos de voto/disposición.

시타ë� ê´€ë � 법ì¸ë“¤ì´ 렉시ì˜� í…Œë¼í“¨í‹±ìŠ�(LXEO)ì—� 대í•� ìƒë‹¹í•� 수ë™ì � ì§€ë¶„ì„ ê³µê°œí–ˆìŠµë‹ˆë‹¤. 집계하면 Citadel Advisors LLC, Citadel Advisors Holdings LP ë°� Citadel GP LLCëŠ� 5,325,269주를 실질 소유하고 있다ê³� 보고했으ë©�, ì´ëŠ” 워런íŠ� 전환으로 발행ë� ìˆ� 있는 1,717,302주를 í¬í•¨í•� 완전 í¬ì„ 기준 55,718,516ì£� ì¤� 9.6%ì—� 해당합니ë‹�. Citadel Securities 계열사는 별ë„ë¡� 8,843주를 보고했습니다. Kenneth Griffinì€ 5,334,112ì£�(역시 9.6%)ë¥� 실질 소유í•� 것으ë¡� ë³´ê³ ë©ë‹ˆë‹�. 제출서는 ì´ëŸ¬í•� ì§€ë¶„ì´ ì§€ë°°ê¶Œì� 변경하거나 ì˜í–¥ë ¥ì„ 행사하기 위해 ì·¨ë“ë� ê²ƒì´ ì•„ë‹ˆë¼ê³  ë°ížˆë©�, ë³´ê³  주체, ì¡°ì§ êµ¬ì¡° ë°� ê³µë™ ì˜ê²°/처분 권한ì� 명시하고 있습니다.

Des entités liées à Citadel divulguent une participation passive substantielle dans Lexeo Therapeutics (LXEO). Collectivement, Citadel Advisors LLC, Citadel Advisors Holdings LP et Citadel GP LLC déclarent la propriété bénéficiaire de 5 325 269 actions, représentant 9,6 % des actions en circulation sur une base entièrement diluée de 55 718 516 actions (y compris 1 717 302 actions susceptibles d’être émises en conversion de bons). Des entités de Citadel Securities déclarent séparément 8 843 actions. Kenneth Griffin est déclaré détenteur bénéficiaire de 5 334 112 actions (également 9,6 %). le dépôt indique que ces positions n’ont pas été acquises dans le but de modifier ou d’influencer le contrôle et identifie les déclarants, la structure organisationnelle ainsi que les pouvoirs partagés de vote/disposition.

Mit Citadel verbundene Einheiten legen einen erheblichen passiven Anteil an Lexeo Therapeutics (LXEO) offen. Gemeinsam melden Citadel Advisors LLC, Citadel Advisors Holdings LP und Citadel GP LLC die wirtschaftliche Eigentümerschaft von 5.325.269 Aktien, was 9,6 % der ausstehenden Aktien auf vollständig verwässerter Basis von 55.718.516 Aktien entspricht (einschließlich 1.717.302 Aktien, die bei Wandlung von Warrants ausgebbar sind). Citadel Securities-Einheiten melden separat 8.843 Aktien. Kenneth Griffin wird mit 5.334.112 Aktien wirtschaftlich begünstigt dargestellt (ebenfalls 9,6 %). Die Meldung gibt an, dass die Positionen nicht erworben wurden, um Kontrolle zu ändern oder zu beeinflussen, und nennt die meldenden Personen, die Organisationsstruktur sowie gemeinsame Stimm- und Verfügungsrechte.






Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)






SCHEDULE 13G




Comment for Type of Reporting Person: The percentages reported in this Schedule 13G are based upon 55,718,516 Shares outstanding comprised of (i) 54,001,214 Shares outstanding as of June 2, 2025 (according to the issuer's registration statement on From S-3 as filed with the Securities and Exchange Commission on June 13, 2025), and (ii) 1,717,302 Shares issuable upon conversion of certain warrants held by affiliates of the reporting persons.


SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G



Citadel Advisors LLC
Signature:/s/ Seth Levy
Name/Title:Seth Levy, Authorized Signatory
Date:08/14/2025
Citadel Advisors Holdings LP
Signature:/s/ Seth Levy
Name/Title:Seth Levy, Authorized Signatory
Date:08/14/2025
Citadel GP LLC
Signature:/s/ Seth Levy
Name/Title:Seth Levy, Authorized Signatory
Date:08/14/2025
Citadel Securities LLC
Signature:/s/ Seth Levy
Name/Title:Seth Levy, Authorized Signatory
Date:08/14/2025
Citadel Securities Group LP
Signature:/s/ Seth Levy
Name/Title:Seth Levy, Authorized Signatory
Date:08/14/2025
Citadel Securities GP LLC
Signature:/s/ Seth Levy
Name/Title:Seth Levy, Authorized Signatory
Date:08/14/2025
Kenneth Griffin
Signature:/s/ Seth Levy
Name/Title:Seth Levy, attorney-in-fact*
Date:08/14/2025

Comments accompanying signature: * Seth Levy is signing on behalf of Kenneth Griffin as attorney-in-fact pursuant to a power of attorney previously filed with the Securities and Exchange Commission, and hereby incorporated by reference herein. The power of attorney was filed as an attachment to a filing by Citadel Advisors LLC on Schedule 13G for Allakos Inc. on October 13, 2023.

FAQ

How many LXEO shares do Citadel entities report owning?

The filing reports Citadel Advisors LLC, Citadel Advisors Holdings LP and Citadel GP LLC beneficially own 5,325,269 shares; Citadel Securities reports 8,843 shares.

What percentage of LXEO does the reported position represent?

The reported position represents 9.6% of LXEO's outstanding shares based on 55,718,516 shares used in the filing's calculation.

Does the filing indicate intent to influence control of Lexeo Therapeutics (LXEO)?

No. The certification states the securities were not acquired and are not held to change or influence control, consistent with a Schedule 13G passive filing.

Who among the Citadel reporting persons is individually identified as a beneficial owner?

Mr. Kenneth Griffin is identified and may be deemed to beneficially own 5,334,112 shares.

Does the ownership count include potential shares from warrant conversion?

Yes. The 55,718,516-share base includes 1,717,302 shares issuable upon conversion of certain warrants held by affiliates, per the filing.
Lexeo Therapeutics Inc

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252.10M
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Biotechnology
Biological Products, (no Disgnostic Substances)
United States
NEW YORK