# EDGAR Filing Document

**Accession Number:** 0001776909
**File Stem:** 0001628280-25-052095
**Filing Date:** 2025-11
**Character Count:** 7404
**Document Hash:** 561baafec1820435d64b05ed33595d9d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-25-052095.hdr.sgml**: 20251113

**ACCESSION NUMBER**: 0001628280-25-052095

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251111

**FILED AS OF DATE**: 20251113

**DATE AS OF CHANGE**: 20251113

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Hayden Phillip Brady
- **CENTRAL INDEX KEY:** 0001938940

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-39139
- **FILM NUMBER:** 251479336

**MAIL ADDRESS:**
- **STREET 1:** 1430 SPRING HILL ROAD
- **STREET 2:** SUITE 330
- **CITY:** MCLEAN
- **STATE:** VA
- **ZIP:** 22102
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** CuriosityStream Inc.
- **CENTRAL INDEX KEY:** 0001776909
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-MOTION PICTURE & VIDEO TAPE PRODUCTION [7812]
- **ORGANIZATION NAME:** 07 Trade & Services
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 8484 GEORGIA AVE.
- **STREET 2:** SUITE 700
- **CITY:** SILVER SPRING
- **STATE:** MD
- **ZIP:** 20910
- **BUSINESS PHONE:** 301-755-2050

**MAIL ADDRESS:**
- **STREET 1:** 8484 GEORGIA AVE.
- **STREET 2:** SUITE 700
- **CITY:** SILVER SPRING
- **STATE:** MD
- **ZIP:** 20910

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Software Acquisition Group Inc.
- **DATE OF NAME CHANGE:** 20190515

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[ ] 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**<sup>*</sup><br>Hayden Phillip Brady<br><sub>(Last) (First) (Middle)</sub><br>8484 GEORGIA AVENUE<br>SUITE 700<br><sub>(Street)</sub><br>SILVER SPRING, MD 20910<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2025-11-11 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director [ ] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_Chief Financial Officer_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>CuriosityStream Inc. [ CURI ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2025-11-11 |  | M |  | 101667 | A | <sup>(1)</sup> | 101667 | D |  |
| Common Stock | 2025-11-12 |  | G |  | 101667<sup>(2)</sup> | D | <sup>(2)</sup> | 0 | D<sup>(2)</sup> |  |
| Common Stock | 2025-11-12 |  | G |  | 101667<sup>(2)</sup> | A | <sup>(2)</sup> | 122484 | I<sup>(2)</sup> | Held by P. Brady Hayden Revocable Trust, of which Mr. Hayden is the trustee. |
| Common Stock |  |  |  |  |  |  |  | 25000 | I | Held by Plan Z, LLC, of which Mr. Hayden is managing member. |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Restricted Stock Units | <sup>(1)</sup> | 2025-11-11 |  | M |  |  | 101667 | <sup>(1)</sup> | <sup>(1)</sup> | Common Stock | 101667 | <sup>(1)</sup> | 0 | D |  |

---

### Footnotes:

(1) On October 9, 2024, the Company granted Brady Hayden 152,500 performance-based restricted stock units ("RSUs") under the 2020 Omnibus Incentive Plan (the "Award"). Each RSU represents a contingent right to receive one share of common stock. On May 7, 2025, the Board determined that the Company met the first performance condition of the Award, for having then achieved more than $4,500,000 in adjusted free cash flow since October 1, 2024, and thereby triggering the vesting of one-third of the Award, or 50,833 RSUs. On November 11, 2025, the Board determined that the Company met the second performance condition of the Award, by achieving more than $9,000,000 in adjusted free cash flow between October 1, 2024 and September 30, 2025, and thereby triggering the vesting of two-thirds of the Award, or 101,667 RSUs.

(2) Reflects the exempt transfer of 101,667 shares from Mr. Hayden to P. Brady Hayden Revocable Trust on November 12, 2025 for no consideration. The reporting person is trustee of the trust, and thereporting person is the sole beneficiary of the trust. The reporting person remains the beneficial owner of the securities held by the trust.

**Signature:** /s/ P. Brady Hayden  
**Date:** 2025-11-13

### Remarks:

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.**