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[SCHEDULE 13G/A] Aura Biosciences, Inc. SEC Filing

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

Aura Biosciences disclosure: Suvretta Capital Management, LLC, Averill Master Fund, Ltd. and Aaron Cowen report shared beneficial ownership positions in Aura Biosciences common stock. Suvretta and Aaron Cowen each report 4,701,775 shares (7.6% of the class); Averill Master Fund reports 4,137,797 shares (6.6% of the class). Each reporting person states no sole voting or dispositive power and reports shared voting and dispositive power for the stated shares. The filing describes pre-funded warrants exercisable subject to a Maximum Percentage cap of 9.99%, which may be increased to up to 19.99% with written notice effective after 61 days; as a result, not all warrants are presently exercisable and the number of shares issuable upon exercise may change with changes in outstanding common stock. The securities reported are directly owned by advisory clients of Suvretta, and the reporting persons disclaim beneficial ownership except to the extent of their pecuniary interest.

Divulgazione di Aura Biosciences: Suvretta Capital Management, LLC, Averill Master Fund, Ltd. e Aaron Cowen dichiarano posizioni di proprietà beneficiaria condivisa sulle azioni ordinarie di Aura Biosciences. Suvretta e Aaron Cowen riportano ciascuno 4,701,775 azioni (7.6% della classe); Averill Master Fund riporta 4,137,797 azioni (6.6% della classe). Ciascuna parte segnalante dichiara di non avere potere di voto o di disposizione esclusivo e indica di detenere congiuntamente il potere di voto e di disposizione sulle azioni indicate. Il deposito descrive warrant prefinanziati esercitabili soggetti a un limite di Percentuale Massima del 9.99%, che può essere aumentato fino al 19.99% tramite avviso scritto che diventa efficace dopo 61 giorni; di conseguenza non tutti i warrant sono attualmente esercitabili e il numero di azioni emettibili al momento dell'esercizio può variare con le modifiche delle azioni ordinarie in circolazione. I titoli segnalati sono di proprietà diretta dei clienti consuliti di Suvretta, e le persone che segnalano rinunciano a dichiarare la proprietà beneficiaria, salvo nella misura del loro interesse pecuniario.

Divulgación de Aura Biosciences: Suvretta Capital Management, LLC, Averill Master Fund, Ltd. y Aaron Cowen informan posiciones de propiedad beneficiaria compartida sobre acciones ordinarias de Aura Biosciences. Suvretta y Aaron Cowen informan cada uno de 4,701,775 acciones (7.6% de la clase); Averill Master Fund informa 4,137,797 acciones (6.6% de la clase). Cada persona declarantes señala que no tiene poder exclusivo de voto o de disposición y declara tener poderes compartidos de voto y de disposición sobre las acciones indicadas. La presentación describe warrants prefinanciados ejercitables sujetos a un tope de Porcentaje Máximo del 9.99%, que puede incrementarse hasta 19.99% mediante aviso escrito que surte efecto después de 61 días; por tanto, no todos los warrants son actualmente ejercitables y el número de acciones a emitir al ejercerse puede variar con cambios en las acciones ordinarias en circulación. Los valores declarados son propiedad directa de clientes asesorados por Suvretta, y las personas que informan renuncian a la condición de propietarios beneficiarios salvo en la medida de su interés pecuniario.

Aura Biosciences 공시: Suvretta Capital Management, LLC, Averill Master Fund, Ltd. � Aaron Cowen은 Aura Biosciences 보통주에 대� 공동 실질 보유 지분을 보고합니�. Suvretta와 Aaron Cowen은 각각 4,701,775� (클래스의 7.6%)� 보고하고, Averill Master Fund� 4,137,797� (클래스의 6.6%)� 보고합니�. � 보고인은 단독 의결� 또는 처분권이 없음� 밝히� 보고� 주식� 대� 공동� 의결� � 처분권을 보고합니�. 제출서류� 행사 가능한 프리펀디드(선납) 워런트가 최대 비율 상한 9.99%� 적용� 받으�, 서면 통지� 61� 후에 효력� 발생하도� 최대 19.99%까지 상향� � 있음� 설명합니�; 따라� 모든 워런트가 현재 행사 가능한 것은 아니�, 행사 � 발행� 주식 수는 유통 중인 보통� 수의 변동에 따라 달라� � 있습니다. 보고� 증권은 Suvretta� 자문 고객� 직접 소유하고 있으�, 보고인들은 자신� 금전� 이익 범위� 초과하는 실질� 소유권을 주장하지 않습니다.

Divulgation d'Aura Biosciences : Suvretta Capital Management, LLC, Averill Master Fund, Ltd. et Aaron Cowen déclarent des positions de propriété bénéficiaire partagée sur les actions ordinaires d'Aura Biosciences. Suvretta et Aaron Cowen déclarent chacun 4,701,775 actions (7.6% de la catégorie) ; Averill Master Fund déclare 4,137,797 actions (6.6% de la catégorie). Chaque déclarant indique ne pas détenir de pouvoir exclusif de vote ou de disposition et déclare disposer de pouvoirs partagés de vote et de disposition sur les actions indiquées. Le dossier décrit des warrants préfinancés exerçables soumis à un plafond de Pourcentage Maximum de 9.99%, susceptible d'être porté à 19.99% par avis écrit prenant effet après 61 jours ; par conséquent, tous les warrants ne sont pas actuellement exerçables et le nombre d'actions susceptibles d'être émises à l'exercice peut varier en fonction des modifications du nombre d'actions ordinaires en circulation. Les titres déclarés sont détenus directement par des clients conseillés par Suvretta, et les déclarants déclinent la qualité de propriétaire bénéficiaire, sauf dans la mesure de leur intérêt pécuniaire.

Aura Biosciences-Offenlegung: Suvretta Capital Management, LLC, Averill Master Fund, Ltd. und Aaron Cowen melden gemeinsame wirtschaftliche Eigentumspositionen an den Stammaktien von Aura Biosciences. Suvretta und Aaron Cowen geben jeweils 4,701,775 Aktien (7,6% der Klasse) an; Averill Master Fund meldet 4,137,797 Aktien (6,6% der Klasse). Jede meldende Person erklärt, keine alleinige Stimm- oder Verfügungsgewalt zu haben, und meldet gemeinsame Stimm- und Verfügungsgewalt für die angegebenen Aktien. Die Einreichung beschreibt vorfinanzierte Warrants, deren Ausübung einer Obergrenze in Form eines Maximalen Prozentsatzes von 9.99% unterliegt, die durch schriftliche Mitteilung nach 61 Tagen auf bis zu 19.99% erhöht werden kann; folglich sind nicht alle Warrants derzeit ausübbar und die Zahl der bei Ausübung auszugebenden Aktien kann sich mit Änderungen der ausstehenden Stammaktien ändern. Die gemeldeten Wertpapiere werden unmittelbar von Beratungskunden von Suvretta gehalten, und die meldenden Personen weisen eine wirtschaftliche Eigentümerschaft zurück, außer hinsichtlich ihres geldwerten Interesses.

Positive
  • Material stakes disclosed: Suvretta and Aaron Cowen each report 4,701,775 shares (7.6%) and Averill reports 4,137,797 shares (6.6%).
  • Pre-funded warrants present potential additional equity: Warrants can be exercised subject to a defined Maximum Percentage framework, offering structured upside.
  • Passive filing form: The Schedule 13G filing and certifications indicate the reported positions are presented as passive holdings rather than an intent to change control.
Negative
  • No sole voting or dispositive power: Each reporting person reports 0 sole voting and dispositive power, limiting unilateral governance influence.
  • Warrants not fully exercisable now: The pre-funded warrants are constrained by a 9.99% exercisability cap, and not all are presently exercisable, which limits immediate conversion/dilution.
  • Beneficial ownership disclaimer: Reporting persons disclaim beneficial ownership except for pecuniary interest, which may complicate assessments of true economic control.

Insights

TL;DR: Three affiliated reporting persons hold meaningful stakes (6.6%�7.6%) with shared control and limited immediate exercisability of pre-funded warrants.

The filing shows Suvretta, Averill and Aaron Cowen as reporting persons with shared voting and dispositive power over material stakes: Suvretta and Cowen each report 4,701,775 shares (7.6%) while Averill reports 4,137,797 shares (6.6%). Important for capitalization and potential dilution: pre-funded warrants exist but are subject to a 9.99% exercisability cap (which the holder may increase up to 19.99% after notice), so immediate conversion is constrained and the future share count from exercises may vary with outstanding common stock. The Schedule 13G format and the certification indicate a passive reporting intent rather than an intent to change control.

TL;DR: Shared voting/dispositive power over >6% stakes plus capped pre-funded warrants creates potential influence but with clear contractual limits on exercise and conversion.

The report highlights shared—rather than sole—control over the reported positions, which limits unilateral governance actions by any single reporting person. The pre-funded warrants introduce conditional upside but are explicitly limited by a Maximum Percentage constraint (9.99% initial cap, expandable to 19.99% after notice), and the filing states not all warrants are presently exercisable because of this restriction. Additionally, the securities are held by Suvretta advisory clients, and the reporting persons include disclaimers of beneficial ownership except for pecuniary interest, which is relevant when assessing immediate governance implications.

Divulgazione di Aura Biosciences: Suvretta Capital Management, LLC, Averill Master Fund, Ltd. e Aaron Cowen dichiarano posizioni di proprietà beneficiaria condivisa sulle azioni ordinarie di Aura Biosciences. Suvretta e Aaron Cowen riportano ciascuno 4,701,775 azioni (7.6% della classe); Averill Master Fund riporta 4,137,797 azioni (6.6% della classe). Ciascuna parte segnalante dichiara di non avere potere di voto o di disposizione esclusivo e indica di detenere congiuntamente il potere di voto e di disposizione sulle azioni indicate. Il deposito descrive warrant prefinanziati esercitabili soggetti a un limite di Percentuale Massima del 9.99%, che può essere aumentato fino al 19.99% tramite avviso scritto che diventa efficace dopo 61 giorni; di conseguenza non tutti i warrant sono attualmente esercitabili e il numero di azioni emettibili al momento dell'esercizio può variare con le modifiche delle azioni ordinarie in circolazione. I titoli segnalati sono di proprietà diretta dei clienti consuliti di Suvretta, e le persone che segnalano rinunciano a dichiarare la proprietà beneficiaria, salvo nella misura del loro interesse pecuniario.

Divulgación de Aura Biosciences: Suvretta Capital Management, LLC, Averill Master Fund, Ltd. y Aaron Cowen informan posiciones de propiedad beneficiaria compartida sobre acciones ordinarias de Aura Biosciences. Suvretta y Aaron Cowen informan cada uno de 4,701,775 acciones (7.6% de la clase); Averill Master Fund informa 4,137,797 acciones (6.6% de la clase). Cada persona declarantes señala que no tiene poder exclusivo de voto o de disposición y declara tener poderes compartidos de voto y de disposición sobre las acciones indicadas. La presentación describe warrants prefinanciados ejercitables sujetos a un tope de Porcentaje Máximo del 9.99%, que puede incrementarse hasta 19.99% mediante aviso escrito que surte efecto después de 61 días; por tanto, no todos los warrants son actualmente ejercitables y el número de acciones a emitir al ejercerse puede variar con cambios en las acciones ordinarias en circulación. Los valores declarados son propiedad directa de clientes asesorados por Suvretta, y las personas que informan renuncian a la condición de propietarios beneficiarios salvo en la medida de su interés pecuniario.

Aura Biosciences 공시: Suvretta Capital Management, LLC, Averill Master Fund, Ltd. � Aaron Cowen은 Aura Biosciences 보통주에 대� 공동 실질 보유 지분을 보고합니�. Suvretta와 Aaron Cowen은 각각 4,701,775� (클래스의 7.6%)� 보고하고, Averill Master Fund� 4,137,797� (클래스의 6.6%)� 보고합니�. � 보고인은 단독 의결� 또는 처분권이 없음� 밝히� 보고� 주식� 대� 공동� 의결� � 처분권을 보고합니�. 제출서류� 행사 가능한 프리펀디드(선납) 워런트가 최대 비율 상한 9.99%� 적용� 받으�, 서면 통지� 61� 후에 효력� 발생하도� 최대 19.99%까지 상향� � 있음� 설명합니�; 따라� 모든 워런트가 현재 행사 가능한 것은 아니�, 행사 � 발행� 주식 수는 유통 중인 보통� 수의 변동에 따라 달라� � 있습니다. 보고� 증권은 Suvretta� 자문 고객� 직접 소유하고 있으�, 보고인들은 자신� 금전� 이익 범위� 초과하는 실질� 소유권을 주장하지 않습니다.

Divulgation d'Aura Biosciences : Suvretta Capital Management, LLC, Averill Master Fund, Ltd. et Aaron Cowen déclarent des positions de propriété bénéficiaire partagée sur les actions ordinaires d'Aura Biosciences. Suvretta et Aaron Cowen déclarent chacun 4,701,775 actions (7.6% de la catégorie) ; Averill Master Fund déclare 4,137,797 actions (6.6% de la catégorie). Chaque déclarant indique ne pas détenir de pouvoir exclusif de vote ou de disposition et déclare disposer de pouvoirs partagés de vote et de disposition sur les actions indiquées. Le dossier décrit des warrants préfinancés exerçables soumis à un plafond de Pourcentage Maximum de 9.99%, susceptible d'être porté à 19.99% par avis écrit prenant effet après 61 jours ; par conséquent, tous les warrants ne sont pas actuellement exerçables et le nombre d'actions susceptibles d'être émises à l'exercice peut varier en fonction des modifications du nombre d'actions ordinaires en circulation. Les titres déclarés sont détenus directement par des clients conseillés par Suvretta, et les déclarants déclinent la qualité de propriétaire bénéficiaire, sauf dans la mesure de leur intérêt pécuniaire.

Aura Biosciences-Offenlegung: Suvretta Capital Management, LLC, Averill Master Fund, Ltd. und Aaron Cowen melden gemeinsame wirtschaftliche Eigentumspositionen an den Stammaktien von Aura Biosciences. Suvretta und Aaron Cowen geben jeweils 4,701,775 Aktien (7,6% der Klasse) an; Averill Master Fund meldet 4,137,797 Aktien (6,6% der Klasse). Jede meldende Person erklärt, keine alleinige Stimm- oder Verfügungsgewalt zu haben, und meldet gemeinsame Stimm- und Verfügungsgewalt für die angegebenen Aktien. Die Einreichung beschreibt vorfinanzierte Warrants, deren Ausübung einer Obergrenze in Form eines Maximalen Prozentsatzes von 9.99% unterliegt, die durch schriftliche Mitteilung nach 61 Tagen auf bis zu 19.99% erhöht werden kann; folglich sind nicht alle Warrants derzeit ausübbar und die Zahl der bei Ausübung auszugebenden Aktien kann sich mit Änderungen der ausstehenden Stammaktien ändern. Die gemeldeten Wertpapiere werden unmittelbar von Beratungskunden von Suvretta gehalten, und die meldenden Personen weisen eine wirtschaftliche Eigentümerschaft zurück, außer hinsichtlich ihres geldwerten Interesses.






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





SCHEDULE 13G





SCHEDULE 13G





SCHEDULE 13G



Suvretta Capital Management, LLC
Signature:/s/ Andrew Nathanson
Name/Title:Andrew Nathanson/General Counsel and Chief Compliance Officer
Date:08/13/2025
Averill Master Fund, Ltd.
Signature:/s/ Andrew Nathanson
Name/Title:Andrew Nathanson/Authorized Signatory
Date:08/13/2025
Aaron Cowen
Signature:/s/ Aaron Cowen
Name/Title:Aaron Cowen
Date:08/13/2025

Comments accompanying signature: * Each Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his, her or its pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. To the extent that "ownership of 5 percent or less of a class" was indicated in Item 5, such response only applies to the Reporting Person(s) that indicated elsewhere herein that it beneficially owns five percent (5%) or less of the class.
Exhibit Information

[Exhibit A - Joint Filing Agreement] [Exhibit B - Control Person Identification]

FAQ

How many AURA shares does Suvretta Capital report owning?

Suvretta Capital Management, LLC reports shared beneficial ownership of 4,701,775 shares, representing 7.6% of the class.

What stake does Averill Master Fund hold in Aura Biosciences (AURA)?

Averill Master Fund, Ltd. reports shared beneficial ownership of 4,137,797 shares, representing 6.6% of the class.

Do the reporting persons have sole voting or dispositive power over the shares?

No. Each reporting person reports 0 sole voting power and 0 sole dispositive power; they report shared voting and dispositive power for the stated shares.

What are the key terms of the pre-funded warrants mentioned in the filing?

The pre-funded warrants have an exercise price of $0.00001 per share and are exercisable only to the extent that exercise would not cause holders and affiliates to beneficially own more than a Maximum Percentage (initially 9.99%), which the holder may increase up to 19.99% with written notice effective after 61 days.

Are the reported securities owned directly or on behalf of others?

The filing states all reported securities are directly owned by advisory clients of Suvretta Capital; Averill Master Fund is identified as one such advisory client that beneficially owns more than 5%.
Aura Biosciences, Inc.

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424.11M
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1.98%
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4.37%
Biotechnology
Biological Products, (no Disgnostic Substances)
United States
BOSTON