SEC FORM 4

SEC FORM 4SEC 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

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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^*

Hayden Phillip Brady

(Last)

(First)

(Middle)

8484 GEORGIA AVENUE

SUITE 700

(Street)

SILVER SPRING

MARYLAND

20910

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
CuriosityStream Inc. [ CURI ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/12/2026

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

X	Form filed by One Reporting Person
	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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	06/12/2026		S		30,400⁽¹⁾⁽²⁾	D	$2.562⁽¹⁾⁽²⁾	71,267	I	Held by P. Brady Hayden Revocable Trust, of which Mr. Hayden is the trustee.⁽³⁾
Common Stock								25,000	I	Held by Plan Z, LLC, of which Mr. Hayden is managing member.

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	⁽⁴⁾							⁽⁴⁾⁽⁵⁾	⁽⁴⁾⁽⁵⁾	Common Stock	70,000		70,000	D
Restricted Stock Units	⁽⁶⁾							⁽⁵⁾⁽⁶⁾	⁽⁵⁾⁽⁶⁾	Common Stock	30,000		30,000	D

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.525 to $2.598, inclusive. The reporting person undertakes to provide to CuriosityStream Inc., any security holder of CuriosityStream Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

2. Shares were sold for tax planning purposes.

3. The reporting person is trustee of the trust, and the reporting person is the sole beneficiary of the trust. The reporting person remains the beneficial owner of the securities held by the trust.

4. On July 25, 2025, the Company granted Mr. Hayden 70,000 restricted stock units (RSUs) under the Company's 2020 Omnibus Incentive Plan. The RSUs are performance-based and will vest in four tranches of 17,500 each upon the date the Board determines that the applicable performance condition has been achieved: (i) the common stock of the Company achieves a 10-day volume weighted average price (VWAP) of $6.50; (ii) the common stock achieves a 10-day VWAP of $7.50; (iii) the common stock achieves a 10-day VWAP of $9.50; and (iv) the common stock achieves a 10-day VWAP of $11.50. In the event that the Performance Conditions are not met, the RSUs will vest in four equal installments of 17,500 on each of the first, second, third and fourth anniversaries of the Grant Date.

5. Each RSU represents the right to receive one share of common stock and will be settled upon vesting (or within 30 days thereafter). All vesting events are subject to continued employment on each applicable vesting date.

6. On February 10, 2026, the Company granted Mr. Hayden 30,000 RSUs with tandem dividend equivalent rights under the Company's 2020 Omnibus Incentive Plan. The RSUs will vest in four tranches of 7,500 each on the first, second, third and fourth anniversaries of the grant date.

Remarks:

	/s/ P. Brady Hayden	06/16/2026
	** 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)

Chief Financial Officer Hayden Phillip Brady sold $77,885 worth of shares (30,400 units at $2.56) (SEC Form 4)