As of October 27, 2026, one holder's latest Schedule 13D or 13G filing report owning 5% or more of Medicinova Inc. The largest reported stake is 3D Investment Partners Pte. Ltd.'s, at 9.9%. One filing is on record since September 29, 2026 (Schedule 13D/A, September 29, 2026).
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Medicinova Inc has 1 Schedule 13D or 13G filing on record since 2026-09-29. 1 holder's latest filing reports 5% or more of common stock, par value $0.001 per share. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| 3D Investment Partners Pte. Ltd. | 9.9% | 4,862,047 | SCHEDULE 13D/A, 2026-09-29 | 2026-09-25 |
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Purpose of Transaction (Item 4)
3D Investment Partners Pte. Ltd.
Item 4 of the Schedule 13D is hereby amended and supplemented as follows: Except as set forth in this Schedule 13D, the Reporting Persons have no present plans or proposals that relate to or that would result in any of the actions specified in clauses (a) through (j) of Item 4 of Schedule 13D. As part of its periodic evaluation of their investment in the Issuer, the Reporting Persons intend to review their investment in the Issuer. The Reporting Persons specifically reserve the right to change their intention with respect to any or all of such matters. In reaching any decision as to their course of action (as well as to the specific elements thereof), the Reporting Persons currently expect that they would take into consideration a variety of factors, including, but not limited to, the following: the Issuer's financial position and strategic direction; actions taken by the Issuer's Board of Directors; the Issuer's business and prospects; other developments concerning the Issuer and its businesses generally; other business opportunities available to the Reporting Persons; changes in law and government regulations; general economic and industry conditions; tax considerations; and money and stock market conditions, including the market price of the securities of the Issuer. As of 2024, the Reporting Persons' Observer Appointment Right under the Shareholder Rights Agreement lapsed under the terms of the agreement, and the Reporting Persons no longer have an Observer appointed …The first part of Item 4 of the SCHEDULE 13D/A filed 2026-09-29; the filing has the rest
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2026-09-29 | 3D Investment Partners Pte. Ltd. | 9.9% | SCHEDULE 13D/A |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.