Filed Pursuant to Rule 424(b)(3)
Registration No. 333-290956

Prospectus Supplement No. 1

(to Prospectus dated December 18, 2025)

19,999,229 Shares

Galaxy Digital Inc.

Class A common stock

This prospectus supplement is being filed to update and supplement the information contained in the prospectus dated December 18, 2025 (the "Prospectus"), which forms part of our registration statement on Form S-1 (No. 333-290956), with the information contained in our Current Report on Form 8-K, filed with the Securities and Exchange Commission (the "SEC") on January 15, 2026 (the "Current Report"). Accordingly, we have attached the Current Report to this prospectus supplement.

The Prospectus and this prospectus supplement relate to the offer and sale from time to time by the selling stockholders named in the Prospectus (the "Selling Stockholders") of up to 19,999,229 shares of Class A common stock, par value $0.001 per share ("Class A common stock"), of Galaxy Digital Inc. ("GDI"), consisting of (i) up to 12,777,778 shares of Class A common stock sold pursuant to investment agreements, dated as of October 10, 2025, by and among GDI, certain selling stockholders and certain institutional investors, and (ii) up to 7,221,451 shares of Class A common stock issuable upon exchange of the 0.50% Exchangeable Senior Notes due 2031 issued by Galaxy Digital Holdings LP ("GDH LP").

This prospectus supplement updates and supplements the information in the Prospectus and is not complete without, and may not be delivered or utilized except in combination with, the Prospectus, including any amendments or supplements thereto. This prospectus supplement should be read in conjunction with the Prospectus and if there is any inconsistency between the information in the Prospectus and this prospectus supplement, you should rely on the information in this prospectus supplement. Terms used in this prospectus supplement but not defined herein shall have the meanings given to such terms in the Prospectus.

Our Class A common stock is listed on the Nasdaq Global Select Market ("Nasdaq") and the Toronto Stock Exchange under the symbol "GLXY." On January 14, 2026, the last reported sale price of our Class A common stock on Nasdaq was $28.19 per share.

Sales of a substantial number of shares of our Class A common stock in the public market, including any sales by the Selling Stockholders, could occur at any time. These sales, or the perception that such sales may occur, could have a significant negative impact on the trading price of our Class A common stock.

We are a holding company and, as a result of the Reorganization Transactions (a series of transactions described further elsewhere in our Prospectus), our principal assets are our direct ownership of (i) certain LP Units, which entitle us to a corresponding percentage ownership of the economic interest in GDH LP (and as a result, Galaxy's business), and (ii) all of the general partnership interests of GDH LP, which entitles us to operate and control all of the business and affairs of GDH LP as its sole general partner, and, through GDH LP and its subsidiaries, to conduct all of Galaxy's business. As of December 31, 2025, we owned 49.27% of the total economic interest in GDH LP. The remaining economic interest in GDH LP is owned by entities controlled by Michael Novogratz, our Chief Executive Officer and Founder, and certain other limited partners of GDH LP, in each case, through their respective ownership of LP Units.

Investing in our Class A common stock involves a high degree of risk. See "Risk Factors" beginning on page 25 of the Prospectus.

Neither the SEC nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of the Prospectus or this prospectus supplement. Any representation to the contrary is a criminal offense.

Prospectus supplement dated January 15, 2026

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): January 15, 2026

Galaxy Digital Inc.

(Exact name of registrant as specified in its charter)

Delaware			001-42655			87-0836313
(State or other jurisdiction of incorporation)			(Commission File Number)			(IRS Employer Identification No.)

300 Vesey Street New York, NY						10282
(Address of principal executive offices)						(Zip Code)

(212) 390-9216

(Registrant's telephone number, including area code)

Not Applicable

(Former name or former address, if changed since last report)

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 (see General Instructions A.2. below):

o			Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o			Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o			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(s)			Name of each exchange on which registered
Class A Common Stock, $0.001 Par Value			GLXY			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 (§240.12b-2 of this chapter).

Emerging growth company o

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Item 8.01 Other Events.

On January 15, 2026, Galaxy Digital Inc. issued a press release announcing that it has completed a Large Load Interconnection Study and received approval from the Electric Reliability Council of Texas (ERCOT) for an additional 830 megawatts of computing demand at its Helios data center campus in West Texas. The full text of the press release is attached as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.

(d)Exhibits

Exhibit No.						Description
99.1						Press Release, dated January 15, 2026.
104						Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

			GALAXY DIGITAL INC.
Date: January 15, 2026			By:			/s/ Anthony Paquette
						Anthony Paquette
						Chief Financial Officer