Company: AIP
Filing Date: 2025-12-11
Form Type: S-3
Source: 0001193125-25-316098
Chunk: 2

Company: Arteris, Inc.
Filing Date: 2025-12-11
Form: S-3
Chunk 2
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| • |     | a base prospectus which covers the offering, issuance and sale by the registrant of up to a maximum                         
 aggregate offering price of $200,000,000 of our common stock, preferred stock, debt securities, warrants, and/or units; and |

| • |     | a sales agreement prospectus supplement covering the offering, issuance and sale by the registrant of up                                                                                           
 to a maximum aggregate offering price of $75,000,000 of our common stock that may be issued and sold from time to time under an Open Market Sale AgreementSM (sales agreement) with Jefferies LLC, 
 as sales agent.                                                                                                                                                                                    |

The base prospectus immediately follows this explanatory note. The sales agreement prospectus supplement immediately follows the base prospectus. The $75,000,000 of common stock that may be offered, issued and sold under the prospectus supplement is included in the $200,000,000 of securities that may be offered, issued and sold by the registrant under the base prospectus. Upon termination of the sales agreement, any portion of the $75,000,000 included in the sales agreement prospectus supplement that is not previously sold is available for sale in other offerings pursuant to the base prospectus, and if no shares are sold under the sales agreement, the full $200,000,000 of securities may be sold in other offerings pursuant to the base prospectus and a corresponding prospectus supplement.

The information in this prospectus is not complete and may be changed. These securities may not be sold until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell nor does it seek an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

Subject to Completion, dated December 11, 2025.

PROSPECTUS

Arteris, Inc.

$200,000,000

Common Stock

Preferred Stock

Debt Securities

Warrants

Units

We may offer and sell up to $200,000,000 in the aggregate of the securities identified above from time to time in one or more offerings. This
prospectus provides you with a general description of the securities.

Each time we offer and sell securities, we will file a supplement
to this prospectus that contains specific information about the offering and the amounts, prices and terms of the securities. The supplement may also add, update or change information contained in this prospectus with respect to that offering. You
should carefully