Celcuity director exercises options and sells 3,000 shares

Celcuity Inc. director Richard E. Buller, through a family trust, exercised stock options and sold company shares on December 5, 2025.

Rhea-AI Filing Summary

Celcuity Inc. director Richard E. Buller, through a family trust, exercised stock options and sold company shares on December 5, 2025. The trust acquired 3,000 shares of common stock by exercising stock options at an exercise price of $5.5 per share, then sold 1,490 shares at a weighted average price of $105.3398 and 1,510 shares at a weighted average price of $106.0353.

After these transactions, the trust beneficially owns 6,760 shares of Celcuity common stock and 1,555 stock options, all reported as indirectly owned by Buller. He and his spouse are the trustees and beneficiaries of the trust, so these holdings are attributed to him as a director of Celcuity.

Insider Trade Summary

Exercise and Sale: 3,000 shares ($301K approx. pre-tax spread)

Exercise and Sale 5 txns

Insider Buller Richard E

Role Director

Sold 3,000 shs ($317K)

Approx. gross sale proceeds $317K

Approx. exercise cost $17K

Approx. pre-tax spread $301K

Type	Security	Shares	Price	Value
Exercise	Stock Option (right to buy)	3,000	$0.00	$0.00
Exercise	Common Stock	3,000	$5.50	$17K
Sale	Common Stock	1,490	$105.3398	$157K
Sale	Common Stock	1,510	$106.0353	$160K
holding	Common Stock	--	--	--

Holdings After Transaction: Stock Option (right to buy) — 1,555 contracts (Indirect, By Trust); Common Stock — 6,760 shares (Indirect, By Trust); Common Stock — 1,029 shares (Direct)

Footnotes (4)

1. F1. The Reporting Person and his spouse are the trustees and beneficiaries. The Reporting Person continues to beneficially own these securities held by the trust.
2. F2. The price reported in Column 4 is a weighted average price. These shares of common stock of the issuer were traded in multiple transactions at prices ranging from $105.00 to $105.70, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.
3. F3. The price reported in Column 4 is a weighted average price. These shares of common stock of the issuer were traded in multiple transactions at prices ranging from $106.00 to $106.45, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.
4. F4. 100% vested.

FAQ

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What insider transactions did Celcuity (CELC) report for Richard E. Buller?

Celcuity reported that director Richard E. Buller, through a trust, exercised 3,000 stock options at $5.5 per share and then sold 3,000 shares of common stock in two separate transactions on December 5, 2025.

How many Celcuity (CELC) shares did Richard E. Buller sell and at what prices?

The trust sold 1,490 Celcuity common shares at a weighted average price of $105.3398 and 1,510 shares at a weighted average price of $106.0353, all indirectly attributable to Buller.

How many Celcuity (CELC) shares does Richard E. Buller beneficially own after these transactions?

Following the reported trades, the trust beneficially owns 6,760 shares of Celcuity common stock, which are reported as indirectly owned by Richard E. Buller.

What stock options in Celcuity (CELC) did Richard E. Buller exercise and what remains?

Buller, via the trust, exercised 3,000 stock options at an exercise price of $5.5 per share on December 5, 2025. After this exercise, the trust continues to hold 1,555 stock options indirectly for his benefit.

How does Richard E. Buller hold his Celcuity (CELC) shares?

The reported Celcuity holdings are owned through a trust for which Buller and his spouse are the trustees and beneficiaries, so the shares and options are reported as indirectly owned by him.

What is Richard E. Bullers role at Celcuity (CELC)?

Richard E. Buller is reported as a director of Celcuity Inc., and the transactions disclosed relate to his indirect holdings through a trust.

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

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Accepted by SEC EDGAR 12/09/2025 - 04:23 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

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^*

Buller Richard E

(Last) (First) (Middle)

16305 36TH AVE N

SUITE 100

(Street)

MINNEAPOLIS MN 55446

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Celcuity Inc. [ CELC ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
12/05/2025

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

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

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

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	12/05/2025		M		3,000	A	$5.5	9,760	I	By Trust(1)
Common Stock	12/05/2025		S		1,490	D	$105.3398(2)	8,270	I	By Trust(1)
Common Stock	12/05/2025		S		1,510	D	$106.0353(3)	6,760	I	By Trust(1)
Common Stock								1,029	D

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
Stock Option (right to buy)	$5.5	12/05/2025		M			3,000	(4)	12/03/2029	Common Stock	3,000	$0	1,555	I	By Trust(1)

Explanation of Responses:

1. The Reporting Person and his spouse are the trustees and beneficiaries. The Reporting Person continues to beneficially own these securities held by the trust.

2. The price reported in Column 4 is a weighted average price. These shares of common stock of the issuer were traded in multiple transactions at prices ranging from $105.00 to $105.70, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.

3. The price reported in Column 4 is a weighted average price. These shares of common stock of the issuer were traded in multiple transactions at prices ranging from $106.00 to $106.45, inclusive. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares traded at each separate price within the range set forth in this footnote.

4. 100% vested.

	/s/ Griffin D. Foster as Attorney-in-Fact for Richard E. Buller pursuant to Power of Attorney previously filed	12/09/2025
	** 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.