Company: ACTG
Filing Date: 2025-01-02
Form Type: 8-K/A
Source: 0001104659-25-000341
Chunk: 0

Company: ACACIA RESEARCH CORP
Filing Date: 2025-01-02
Form: 8-K/A
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K/A

(Amendment No. 1)

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d) OF

THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported):
October 18, 2024

ACACIA RESEARCH CORPORATION

(Exact name of registrant as specified in its charter)</div>

| Delaware                        | 001-37721   | 95-4405754         |
| (State or other jurisdiction of 
 incorporation)                  | -Commission 
 File Number | -I.R.S. Employer   
 Identification No. |

| 767 Third Avenue,                        |           |
| 6th Floor                                |           |
| New York,                                |           |
| NY                                       |     10017 |
| (Address of principal executive offices) | -Zip Code |

<div align='center'>(Registrant’s telephone number, including area code): ( 332) 236-8500</div>

Check the appropriate box below if the Form 8-K
filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

| ¨ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)                  |
| ¨ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)                 |
| ¨ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| ¨ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |

Securities registered pursuant to Section 12(b) of
the Act:

| Title of each class                      | Trading Symbol | Name of each exchange on which registered |
| Common Stock, par value $0.001 per share | ACTG           | The Nasdaq Stock Market, LLC              |

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.