[Form 4] CuriosityStream Inc. Insider Trading Activity

Rhea-AI Filing Summary

CuriosityStream Inc. (CURI) President and CEO Clint Stinchcomb, who is also a director, reported selling 100,000 shares of common stock on November 25, 2025 at a weighted average price of $4.624 per share for estate and tax planning purposes. After this sale, he beneficially owned 2,417,998 shares of common stock directly.

He also reported 1,800,000 restricted stock units (RSUs), each representing one share of common stock. These RSUs are part of a 2,400,000 RSU performance-based grant made on July 15, 2025 with dividend equivalent rights under the 2020 Omnibus Incentive Plan. On August 4, 2025, the board determined that CuriosityStream achieved a 35% year-over-year revenue growth target for January 1 through June 30, 2025, compared to the same period in 2024, triggering vesting of the first 600,000 RSUs, with remaining vesting subject to continued employment and future performance goals.

Insights

Equity Compensation and Governance Analyst

CEO sells shares for tax planning while large performance-based RSU award begins to vest after strong disclosed revenue growth.

The filing shows CuriosityStream’s President and CEO, Clint Stinchcomb, sold 100,000 shares of common stock on 11/25/2025 at a weighted average price of $4.624, and now directly holds 2,417,998 shares. The explanation states these sales were for estate and tax planning purposes, and the remaining ownership stake is still sizeable, which limits any immediate governance concern from this specific sale alone.

The footnotes describe a significant equity incentive: on July 15, 2025 the company granted 2,400,000 performance-based RSUs with dividend equivalent rights under the 2020 Omnibus Incentive Plan, each convertible into one share of common stock. These RSUs vest only if employment continues and if stock price or financial performance goals are met, and unearned units are cancelled, which ties a large portion of potential compensation to measurable outcomes rather than time alone.

The filing also discloses that on August 4, 2025 the Board determined the first performance condition was achieved by delivering 35% year-over-year revenue growth for the period from January 1 through June 30, 2025, triggering vesting of the first 600,000 RSU tranche and leaving 1,800,000 RSUs outstanding. The key items to watch going forward are any additional vesting triggers under this award, future Form 4s showing changes in Mr. Stinchcomb’s holdings, and later disclosures confirming whether subsequent performance or stock price conditions are met.

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

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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^*

Stinchcomb Clinton Larry

(Last) (First) (Middle)

8484 GEORGIA AVE., 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)

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

3. Date of Earliest Transaction (Month/Day/Year)
11/25/2025

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	11/25/2025		S		100,000(1)	D	$4.624(2)	2,417,998	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
Restricted Stock Units	(3)(4)							(3)(4)	(3)(4)	Common Stock	1,800,000		1,800,000	D

Explanation of Responses:

1. Sales were made for estate and tax planning purposes.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.60 to $4.70, 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.

3. All vesting is subject to continued employment on the applicable vesting date and any RSUs not earned during the term of Mr. Stinchcomb's employment agreement ("Agreement") will be cancelled. The dividend equivalents rights entitle Mr. Stinchcomb to payout of dividends accrued on each unvested RSU to the extent such RSUs vest and are distributed under the Agreement.

4. On July 15, 2025, the Company granted Mr. Stinchcomb 2,400,000 restricted stock units (RSUs) with tandem dividend equivalent rights under the 2020 Omnibus Incentive Plan. Each RSU represents the right to receive one share of common stock. The RSUs granted are performance-based, subject to the Company achieving certain stock price or financial performance goals. On August 4, 2025, the Board determined that the Company met the first performance condition of the award by achieving 35% year-over-year revenue growth for the period January 1 through June 30, 2025, compared to the same period in 2024, and thereby triggering the vesting of the first tranche of the Award, or 600,000 RSUs.

Remarks:

	/s/ P. Brady Hayden as attorney-in-fact for Clint Stinchcomb	11/25/2025
	** 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) report for Clint Stinchcomb?

Clint Stinchcomb reported selling 100,000 shares of CuriosityStream common stock on November 25, 2025 at a weighted average price of $4.624 per share.

How many CuriosityStream (CURI) shares does Clint Stinchcomb hold after the reported sale?

Following the reported transaction, Clint Stinchcomb beneficially owned 2,417,998 shares of CuriosityStream common stock directly.

Why were the CuriosityStream (CURI) shares sold by Clint Stinchcomb?

The footnotes state that the sales were made for estate and tax planning purposes.

What RSU award did CuriosityStream (CURI) grant to Clint Stinchcomb in 2025?

On July 15, 2025, CuriosityStream granted Clint Stinchcomb 2,400,000 restricted stock units (RSUs) with dividend equivalent rights under the 2020 Omnibus Incentive Plan.

How many CuriosityStream (CURI) RSUs vested based on 2025 performance for Clint Stinchcomb?

On August 4, 2025, the board determined that a 35% year-over-year revenue growth goal was met for January 1 through June 30, 2025, triggering vesting of the first 600,000 RSUs of the award.

How many CuriosityStream (CURI) RSUs does Clint Stinchcomb report as beneficially owned after vesting?

He reported 1,800,000 RSUs beneficially owned, each representing the right to receive one share of CuriosityStream common stock, with vesting subject to continued employment and additional performance conditions.

What is Clint Stinchcomb’s role at CuriosityStream (CURI)?

Clint Stinchcomb is a director of CuriosityStream and serves as its President and CEO.