CuriosityStream Inc. (CURI) CFO discloses 2,000-share sale, 70,000 RSUs

Rhea-AI Filing Summary

CuriosityStream Inc.'s chief financial officer, P. Brady Hayden, reported selling 2,000 shares of common stock on December 15, 2025 at $4.59 per share. The shares were sold by the P. Brady Hayden Revocable Trust under a Rule 10b5-1 trading plan that Mr. Hayden entered into on May 30, 2025.

After this transaction, Mr. Hayden beneficially owns 119,141 CuriosityStream shares through the revocable trust and 25,000 shares through Plan Z, LLC, plus 70,000 restricted stock units granted on July 25, 2025. The RSUs are performance-based awards in four tranches of 17,500 each, with vesting tied to board-determined performance conditions or, if those are not met, to annual time-based vesting over four years, all subject to continued employment.

Insider Trade Summary

Net Seller: 2,000 shares ($9,180)

Net Sell 3 txns

Insider Hayden Phillip Brady

Role Chief Financial Officer

Sold 2,000 shs ($9K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,000	$4.59	$9K
holding	Restricted Stock Units	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 119,141 shares (Indirect, Held by P. Brady Hayden Revocable Trust, of which Mr. Hayden is the trustee.); Restricted Stock Units — 70,000 shares (Direct)

Footnotes (1)

1. Shares sold pursuant to a 10b5-1 plan which Mr. Hayden entered into on May 30, 2025. 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. On July 25, 2025 ("Grant Date"), the Company granted Mr. Hayden 70,000 restricted stock units ("RSUs") under the Company's 2020 Omnibus Incentive Plan. Each RSU represents a contingent right to receive one share of common stock. 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. In the event that the Performance Conditions are not met, the RSUs granted will vest in four equal installments of 17,500 on each on the first, second, third and fourth anniversaries of the Grant Date, and will be settled upon vesting (or within 30 days thereafter). All vesting events are subject to continued employment on each applicable vesting date.

Form 4 Insider Transactions: What Each Field Means →

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).

X

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 MD 20910

(City) (State) (Zip)

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

3. Date of Earliest Transaction (Month/Day/Year)
12/15/2025

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	12/15/2025		S		2,000(1)	D	$4.59	119,141	I	Held by P. Brady Hayden Revocable Trust, of which Mr. Hayden is the trustee.(2)
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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(3)							(3)	(3)	Common Stock	70,000		70,000	D

Explanation of Responses:

1. Shares sold pursuant to a 10b5-1 plan which Mr. Hayden entered into on May 30, 2025.

2. 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.

3. On July 25, 2025 ("Grant Date"), the Company granted Mr. Hayden 70,000 restricted stock units ("RSUs") under the Company's 2020 Omnibus Incentive Plan. Each RSU represents a contingent right to receive one share of common stock. 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. In the event that the Performance Conditions are not met, the RSUs granted will vest in four equal installments of 17,500 on each on the first, second, third and fourth anniversaries of the Grant Date, and will be settled upon vesting (or within 30 days thereafter). All vesting events are subject to continued employment on each applicable vesting date.

Remarks:

	/s/ P. Brady Hayden	12/15/2025
	** 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.
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FAQ

What insider transaction did CuriosityStream (CURI) disclose for its CFO?

CuriosityStream's chief financial officer, P. Brady Hayden, reported the sale of 2,000 shares of common stock on December 15, 2025 at a price of $4.59 per share.

Was the CuriosityStream CFO's stock sale under a Rule 10b5-1 trading plan?

Yes. The 2,000 shares were sold pursuant to a Rule 10b5-1 trading plan that Mr. Hayden entered into on May 30, 2025, as noted in the explanation of responses.

How many CuriosityStream (CURI) shares does P. Brady Hayden own after the reported sale?

Following the reported transaction, Mr. Hayden beneficially owns 119,141 shares of CuriosityStream through the P. Brady Hayden Revocable Trust and an additional 25,000 shares through Plan Z, LLC.

What restricted stock units (RSUs) does the CuriosityStream CFO hold?

On July 25, 2025, Mr. Hayden was granted 70,000 restricted stock units (RSUs) under CuriosityStream's 2020 Omnibus Incentive Plan. Each RSU represents a contingent right to receive one share of common stock.

How do the CuriosityStream CFO's RSUs vest?

The 70,000 RSUs are performance-based and vest in four tranches of 17,500 each when the board determines that the applicable performance conditions have been achieved. If those conditions are not met, they instead vest in four equal annual installments of 17,500 on the first through fourth anniversaries of the grant date, with all vesting subject to continued employment.

Are the CuriosityStream CFO's reported holdings direct or indirect?

The reported common stock holdings are indirect: 119,141 shares are held by the P. Brady Hayden Revocable Trust, where Mr. Hayden is trustee and sole beneficiary, and 25,000 shares are held by Plan Z, LLC, where he is managing member. The 70,000 RSUs are reported as directly owned derivative securities.