Fulcrum Therapeutics (FULC) insider reports 6,663,383-share Tang Capital stake

Rhea-AI Filing Summary

Fulcrum Therapeutics, Inc. reports that investment funds affiliated with Tang Capital beneficially own 6,663,383 shares of common stock, held indirectly. Kevin Tang and Tang Capital Management LLC are each identified as ten percent owners, with Kevin Tang having a pecuniary interest through several Tang Capital entities.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider TANG KEVIN, TANG CAPITAL MANAGEMENT LLC

Role 10% Owner | 10% Owner

Type	Security	Shares	Price	Value
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 6,663,383 shares (Indirect, See Footnote)

Footnotes (1)

1. [object Object]

Key Figures

Indirectly owned common shares: 6,663,383 shares Reporting persons: 2

2 metrics

Indirectly owned common shares 6,663,383 shares Indirect beneficial ownership of Fulcrum Therapeutics, Inc. common stock via Tang Capital entities

Reporting persons 2 Kevin Tang and Tang Capital Management LLC, each listed as a ten percent owner

Key Terms

beneficially owned, pecuniary interest, ten percent owner

3 terms

beneficially owned financial

"The shares are beneficially owned by Tang Capital Partners, LP ("TCP"), Tang Capital..."

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

pecuniary interest financial

"Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV."

ten percent owner financial

"Kevin Tang and Tang Capital Management LLC are each identified as a ten percent owner."

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Available on EDGAR 07/15/2026 - 07:49 PM Accepted by SEC EDGAR 07/15/2026 - 07:49 PM Learn about SEC filing dates

FAQ

What insider stake is reported in Fulcrum Therapeutics (FULC)'s Form 3?

The Form 3 reports an indirect beneficial stake of 6,663,383 shares of Fulcrum Therapeutics common stock. These shares are held through Tang Capital-affiliated entities in which Kevin Tang has a pecuniary interest.

Who are the reporting persons on Fulcrum Therapeutics (FULC)'s Form 3?

The reporting persons are Kevin Tang and Tang Capital Management LLC, each identified as a ten percent owner. Tang Capital Management LLC serves as general partner or manager for the investment funds that hold the Fulcrum shares.

How are Kevin Tang’s Fulcrum Therapeutics (FULC) holdings structured?

The 6,663,383 shares are beneficially owned by Tang Capital Partners, LP, Tang Capital Partners International, LP, Tang Capital Partners III, Inc., and Tang Capital Partners IV, Inc. Kevin Tang controls these entities and has a pecuniary interest in their Fulcrum holdings.

Is Kevin Tang’s ownership in Fulcrum Therapeutics (FULC) direct or indirect?

Kevin Tang’s reported ownership is indirect. The shares are held by Tang Capital investment entities, with the filing classifying the position as indirect and describing his pecuniary interest through those entities.

What type of security is disclosed in the Fulcrum Therapeutics (FULC) insider filing?

The filing covers Common Stock of Fulcrum Therapeutics, Inc. All 6,663,383 shares reported are shares of common stock beneficially owned through Tang Capital-affiliated entities rather than derivative securities.

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

TANG KEVIN

(Last) (First) (Middle)

4747 EXECUTIVE DRIVE

SUITE 210

(Street)

SAN DIEGO CALIFORNIA 92121

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
07/13/2026

3. Issuer Name and Ticker or Trading Symbol
Fulcrum Therapeutics, Inc. [ FULC ]

3a. Foreign Trading Symbol

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

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

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

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

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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	6,663,383	I	See Footnote(1)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person^*

TANG KEVIN

(Last) (First) (Middle)

4747 EXECUTIVE DRIVE

SUITE 210

(Street)

SAN DIEGO CALIFORNIA 92121

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

1. Name and Address of Reporting Person^*

TANG CAPITAL MANAGEMENT LLC

(Last) (First) (Middle)

4747 EXECUTIVE DRIVE

SUITE 210

(Street)

SAN DIEGO CALIFORNIA 92121

(City) (State) (Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer

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

Explanation of Responses:

1. The shares are beneficially owned by Tang Capital Partners, LP ("TCP"), Tang Capital Partners International, LP ("TCPI"), Tang Capital Partners III, Inc. ("TCP III") and Tang Capital Partners IV, Inc. ("TCP IV"). Kevin Tang is the sole manager of Tang Capital Management, LLC, which is the general partner of TCP and TCPI. Kevin Tang is the sole director and Chief Executive Officer of TCP III and TCP IV, which are indirectly wholly owned by TCP. Mr. Tang has a pecuniary interest in the shares beneficially held by TCP, TCPI, TCP III and TCP IV.

	Kevin Tang	07/15/2026
	Kevin Tang, Manager	07/15/2026
	** 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 5 (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 3: SEC 1473 (03-26)