MediciNova investment manager sells 640,000 shares

The reported price was converted from Japanese yen, while the indirect position after the transaction stood at 4,862,047 shares.

Rhea-AI Filing Summary

MediciNova, Inc. (MNOV) reports that 3D Investment Partners Pte. Ltd., acting as investment manager to 3D Opportunity Master Fund, indirectly sold 640,000 shares on September 25, 2026, at a reported $2.70 per share; the reported price was converted from Japanese yen. The indirect position following the transaction was 4,862,047 shares. The form reports no Rule 10b5-1 plan.

Insider Trade Summary

Net Seller: 640,000 shares

Net Sell 1 txn

Insider 3D Investment Partners Pte. Ltd., 3D Opportunity Master Fund

Role Insider | Insider

Sold 640,000 shs ($1.73M)

Type	Security	Shares	Price	Value
Sale	Common Stock	640,000	$2.70	$1.73M

Holdings After Transaction: Common Stock — 4,862,047 shares (Indirect, As Investment Manager to 3DOMF)

Key Figures

Shares sold: 640,000 shares Reported sale price per share: $2.70 per share Shares following transaction: 4,862,047 shares

3 metrics

Shares sold 640,000 shares September 25, 2026

Reported sale price per share $2.70 per share Converted from Japanese yen

Shares following transaction 4,862,047 shares Reported indirect position after the transaction

Key Terms

investment manager, Japanese Yen, 10% Owner

3 terms

investment manager financial

"As Investment Manager to 3DOMF"

Japanese Yen financial

"transacted in Japanese Yen"

10% Owner financial

"Formerly 10% Owner"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many MNOV shares did 3D Investment Partners sell, and at what price?

3D Investment Partners Pte. Ltd., as investment manager to 3D Opportunity Master Fund, reported an indirect sale of 640,000 MNOV shares on September 25, 2026, at $2.70 per share. The reported price was converted from Japanese yen, and no Rule 10b5-1 plan is reported.

How many MNOV shares remained after the reported sale?

The reported indirect position following the transaction was 4,862,047 shares for 3D Investment Partners Pte. Ltd. as investment manager to 3D Opportunity Master Fund.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/29/2026 - 05:00 PM Accepted by SEC EDGAR 09/29/2026 - 05:00 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

X

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

3D Investment Partners Pte. Ltd.

(Last) (First) (Middle)

1 TEMASEK AVENUE

#20-02A MILLENIA TOWER

(Street)

SINGAPORE 039192

(City) (State) (Zip)

SINGAPORE

(Country)

2. Issuer Name and Ticker or Trading Symbol
MEDICINOVA INC [ MNOV ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Formerly 10% Owner

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/25/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/25/2026		S		640,000	D	$2.7	4,862,047	I	As Investment Manager to 3DOMF

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person^*

3D Investment Partners Pte. Ltd.

(Last) (First) (Middle)

1 TEMASEK AVENUE

#20-02A MILLENIA TOWER

(Street)

SINGAPORE 039192

(City) (State) (Zip)

SINGAPORE

(Country)

Relationship of Reporting Person(s) to Issuer

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Formerly 10% Owner

1. Name and Address of Reporting Person^*

3D Opportunity Master Fund

(Last) (First) (Middle)

C/O MAPLES CORPORATE SERVICES LIMITED

PO BOX 309, UGLAND HOUSE

(Street)

GRAND CAYMAN KY1-1104

(City) (State) (Zip)

CAYMAN ISLANDS

(Country)

Relationship of Reporting Person(s) to Issuer

	Director		10% Owner
	Officer (give title below)	X	Other (specify below)
			Formerly 10% Owner

Explanation of Responses:

Remarks:

The reported Transaction was transacted in Japanese Yen and the reported Price was converted to U.S. dollars

	/s/ Sai Fai Yip, Director for 3D Investment Partners Pte. Ltd	09/29/2026
	/s/ Sai Fai Yip, Director for 3D Opportunity Master Fund	09/29/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)