CuriosityStream (CURI) COO reports 5,768-share sale and 750K RSUs

Rhea-AI Filing Summary

CuriosityStream Inc.'s COO and Secretary Tia Cudahy reported an insider transaction involving company stock and equity awards. On 12/10/2025, she sold 5,768 shares of common stock at a weighted average price of $4.976, executed under a Rule 10b5-1 trading plan that she entered into on August 13, 2025. Following this sale, she directly beneficially owned 508,880 common shares.

The report also notes that on July 25, 2025, Ms. Cudahy was granted 750,000 restricted stock units (RSUs) with dividend equivalent rights under the company’s 2020 Omnibus Incentive Plan. Each RSU represents a right to receive one share of common stock. These RSUs are performance-based, scheduled to vest in four tranches of 187,500 units when specified performance conditions are determined to be met, or alternatively in four equal annual installments from the Grant Date, in each case requiring continued employment.

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

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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).

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^*

Cudahy Theresa Ellen

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
12/10/2025

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	12/10/2025		S		5,768(1)	D	$4.976(2)	508,880	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	750,000		750,000	D

Explanation of Responses:

1. Shares sold pursuant to a 10b5-1 plan which Ms. Cudahy entered into on August 13, 2025.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.97 to $4.99, 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. On July 25, 2025 ("Grant Date"), the Company granted Ms. Cudahy 750,000 restricted stock units ("RSUs") with tandem dividend equivalent rights under the Company's 2020 Omnibus Incentive Plan (the "Plan"). Each RSU represents a contingent right to receive one share of common stock.

4. The RSUs granted are performance-based and will vest in four tranches of 187,500 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 187,500 on each of 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 as attorney-in-fact for Tia Cudahy	12/12/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transaction did CuriosityStream (CURI) report for COO Tia Cudahy?

CuriosityStream reported that COO and Secretary Tia Cudahy sold 5,768 shares of common stock on 12/10/2025 in an insider transaction.

At what price did the CuriosityStream (CURI) shares sell in Tia Cudahy’s transaction?

The 5,768 shares of CuriosityStream common stock were sold at a weighted average price of $4.976, with individual trades ranging from $4.97 to $4.99.

How many CuriosityStream (CURI) shares does Tia Cudahy own after the reported sale?

After the reported sale, Tia Cudahy beneficially owns 508,880 shares of CuriosityStream common stock in direct ownership.

Was Tia Cudahy’s CuriosityStream (CURI) share sale under a Rule 10b5-1 plan?

Yes. The 5,768-share sale was made pursuant to a Rule 10b5-1 trading plan that Ms. Cudahy entered into on August 13, 2025.

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

On July 25, 2025, CuriosityStream granted Tia Cudahy 750,000 RSUs, each representing one share of common stock, under the company’s 2020 Omnibus Incentive Plan.

How do Tia Cudahy’s CuriosityStream (CURI) RSUs vest?

The 750,000 RSUs are performance-based and may vest in four tranches of 187,500 units upon achievement of performance conditions, or otherwise in four equal annual installments from the Grant Date, subject to continued employment.