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ArriVent (AVBP): OrbiMed Reports Ownership Change After Dilution

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
SCHEDULE 13D/A

Rhea-AI Filing Summary

OrbiMed filed Amendment No. 1 to its Schedule 13D regarding ArriVent BioPharma common stock to report a change in beneficial ownership after an increase in shares outstanding. The amendment discloses an aggregate beneficial ownership of 3,027,328 shares, representing approximately 7.5% of the 40,568,944 outstanding shares reported in ArriVent's Quarterly Report. The filing clarifies that OrbiMed Private Investments VIII, LP and OrbiMed Asia Partners IV, L.P. each hold 1,513,664 shares (about 3.7% each) and that OrbiMed Advisors, GP VIII, OAP GP IV and Advisors IV have shared or sole voting and dispositive power over those positions.

The Reporting Persons state the shares were acquired for investment purposes and not to obtain control, and confirm they have no current plans to pursue extraordinary transactions or board changes. The filing also summarizes an Amended and Restated Investors' Rights Agreement that provides demand registration rights (requests for S-1 registrations exceeding $20 million), Form S-3 registration rights (thresholds including $5 million and certain percentage holders) and piggyback registration rights, and notes that director Carl L. Gordon is a board member and may receive equity awards subject to transfer obligations to the OrbiMed entities.

Positive

  • Clear disclosure of aggregate holdings: 3,027,328 shares representing approximately 7.5% of outstanding shares (40,568,944).
  • Investors' Rights Agreement provides demand registration, Form S-3 and piggyback registration rights, preserving liquidity options for holders.
  • Affiliation and control mechanics are documented, including which entities hold voting and dispositive power, improving transparency.

Negative

  • Ownership percentage declined by >1% due to an increase in shares outstanding, indicating dilution of OrbiMed's stake.
  • Reporting Persons may have ability to affect control because Carl L. Gordon is a director and certain contractual transfer obligations exist, which could raise governance attention for some investors.

Insights

TL;DR: OrbiMed reports a combined 7.5% stake in ArriVent after dilution; filing reiterates investment intent and registration rights.

The Schedule 13D/A provides precise holdings data and explains the mechanics behind the reported decrease in ownership: an increase in the issuer's share count reduced OrbiMed's percentage ownership by more than 1%. The filing identifies the specific entities and vote/disposition arrangements, clarifying that 1,513,664 shares are attributable to each of OPI VIII and OAP IV and that OrbiMed Advisors may be deemed to control 3,027,328 shares in the aggregate. The Investors' Rights Agreement provisions are spelled out, including demand registration thresholds and Form S-3 and piggyback rights, which preserve liquidity and exit optionality for these holders. No new strategic intentions or control actions are disclosed.

TL;DR: Transparent disclosure of ownership, affiliations, and director relationships; no declared plans to change governance or pursue control.

The amendment responsibly documents relationships among OrbiMed entities and the board connection via Carl L. Gordon, noting his role as a director and the contractual obligation to transfer any director equity awards to the OrbiMed entities. This disclosure is material for governance assessment because it clarifies potential influence while explicitly stating the Reporting Persons did not acquire shares to effect control and have no current plans to alter board composition or pursue extraordinary corporate actions. Investors gain clearer visibility into voting and disposition power and the existence of registration rights that affect potential monetization timelines.






If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).






SCHEDULE 13D






SCHEDULE 13D






SCHEDULE 13D






SCHEDULE 13D






SCHEDULE 13D


ORBIMED ADVISORS LLC
Signature:/s/ Carl L. Gordon
Name/Title:Member
Date:08/13/2025
OrbiMed Capital GP VIII LLC
Signature:/s/ Carl L. Gordon
Name/Title:Member of OrbiMed Advisors LLC
Date:08/13/2025
OrbiMed Asia GP IV, L.P.
Signature:/s/ Carl L. Gordon
Name/Title:Director of OrbiMed Advisors IV Limited
Date:08/13/2025
OrbiMed Advisors IV Limited
Signature:/s/ Carl L. Gordon
Name/Title:Director
Date:08/13/2025

FAQ

How much of ArriVent (AVBP) does OrbiMed report owning?

The filing reports an aggregate beneficial ownership of 3,027,328 shares, approximately 7.5% of the 40,568,944 outstanding shares.

Which OrbiMed entities hold ArriVent shares and how many?

OrbiMed Private Investments VIII, LP and OrbiMed Asia Partners IV, L.P. each hold 1,513,664 shares (about 3.7% each).

Why was Amendment No.1 filed for AVBP?

Amendment No. 1 was filed to report that the Reporting Persons' beneficial ownership decreased by more than 1% as a result of an increase in the number of shares outstanding.

Does OrbiMed intend to take control of ArriVent (AVBP)?

The filing states the shares were acquired for investment purposes and not with the intention of acquiring control; no plans for changes to board composition or extraordinary transactions are disclosed.

What registration rights are described in the filing for AVBP shareholders?

The Amended and Restated Investors' Rights Agreement includes demand registration rights for offerings over $20 million, Form S-3 rights (thresholds including aggregate offering price of $5 million and percentage-holder conditions) and piggyback registration rights.
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