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  4. [Form 4] Arteris, Inc. Insider Trading Activity

Arteris CEO sells 100K shares at about $20.75

Arteris CEO K. Charles Janac’s affiliated entity sold 100,000 AIP shares under a Rule 10b5-1 trading plan while retaining significant direct and indirect holdings.

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Arteris, Inc. (AIP) reported that K. Charles Janac, its President, CEO and a more than ten percent owner, had an affiliated entity sell 100,000 shares of Common Stock on September 1, 2026 at a weighted average price of $20.7497 per share in a sale transaction.

The shares were sold by Bayview Legacy, LLC, an entity for which Janac serves as manager and is deemed to have voting and dispositive power. The transaction was made pursuant to a Rule 10b5-1 trading plan adopted on December 12, 2025. After the sales, Bayview Legacy, LLC held 8,229,071 shares indirectly, Janac held 175,148 shares directly, and the Charles and Lydia Janac Trust held 56,252 shares indirectly.

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Insider JANAC K CHARLES
Role President and CEO
Sold 100,000 shs ($2.07M)
Type Security Shares Price Value
Sale Common Stock F1, F2, F3 100,000 $20.7497 $2.07M
holding Common Stock -- -- --
holding Common Stock F4 -- -- --
Holdings After Transaction: Common Stock — 8,229,071 shares (Indirect, Bayview Legacy); Common Stock — 175,148 shares (Direct); Common Stock — 56,252 shares (Indirect, Charles and Lydia Janac Trust)
Footnotes (4)
  1. F1. Transaction made pursuant to a 10b5-1 trading plan that was adopted by K. Charles Janac, as the manager of Bayview Legacy, LLC, on December 12, 2025.
  2. F2. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $20.465 to $21.410 inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, 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 range set forth in this footnote.
  3. F3. The Reporting Person is the manager of Bayview Legacy, LLC and as such is deemed to have voting and dispositive power of the shares beneficially owned by Bayview Legacy, LLC.
  4. F4. The shares are held by Charles and Lydia Janac Trust, for which the Reporting Person serves as trustee.
Shares sold 100,000 shares Common Stock sale on September 1, 2026 by Bayview Legacy, LLC
Weighted average sale price $20.7497 per share Sale of 100,000 shares in multiple transactions
Sale price range $20.465 to $21.410 per share Prices for multiple transactions included in the 100,000-share sale
Indirect holdings via Bayview Legacy, LLC after sale 8,229,071 shares Common Stock beneficially owned indirectly after the transaction
Direct holdings after transaction 175,148 shares Common Stock held directly by K. Charles Janac
Indirect holdings via Charles and Lydia Janac Trust 56,252 shares Common Stock held by trust for which Janac serves as trustee
Net buy/sell shares in Form 4 100,000 shares net sold Transaction summary shows net-sell direction for reported period
Rule 10b5-1 plan adoption date December 12, 2025 Trading plan under which the September 1, 2026 sale occurred
Rule 10b5-1 trading plan regulatory
"Transaction made pursuant to a 10b5-1 trading plan that was adopted"
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average sale price financial
"The price reported in Column 4 is a weighted average sale price."
voting and dispositive power regulatory
"deemed to have voting and dispositive power of the shares"
indirect ownership financial
"The Reporting Person is the manager of Bayview Legacy, LLC"
beneficially owned financial
"shares beneficially owned by Bayview Legacy, LLC."
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

FAQ

What insider transaction did Arteris (AIP) disclose for K. Charles Janac?
Arteris disclosed that an entity managed by K. Charles Janac sold 100,000 shares of Arteris Common Stock on September 1, 2026. The filing identifies the transaction as a sale in open market or private transaction and reports it as an indirect ownership change.

At what price were the 100,000 Arteris (AIP) shares sold in this Form 4?
The 100,000 shares were sold at a weighted average sale price of $20.7497 per share. The filing notes that the shares were sold in multiple transactions at prices ranging from $20.465 to $21.410, and detailed breakdowns are available upon request.

Who actually sold the Arteris (AIP) shares reported for K. Charles Janac?
The seller was Bayview Legacy, LLC. The filing states that K. Charles Janac is the manager of Bayview Legacy, LLC and is deemed to have voting and dispositive power over the shares beneficially owned by Bayview Legacy, LLC, so the sale is reported as his indirect ownership change.

Was the Arteris (AIP) insider sale made under a Rule 10b5-1 plan?
Yes. The filing states the transaction was made pursuant to a Rule 10b5-1 trading plan adopted by K. Charles Janac, as manager of Bayview Legacy, LLC, on December 12, 2025. The Form 4 also checks the affirmation box for a Rule 10b5-1 plan.

How many Arteris (AIP) shares does K. Charles Janac hold after this transaction?
After the reported sale, Janac is shown with 175,148 shares held directly. Indirectly, Bayview Legacy, LLC holds 8,229,071 shares, and the Charles and Lydia Janac Trust, for which he serves as trustee, holds 56,252 shares.

What is the Charles and Lydia Janac Trust’s role in Arteris (AIP) holdings?
The filing states that 56,252 shares of Arteris Common Stock are held by the Charles and Lydia Janac Trust. K. Charles Janac serves as trustee of this trust, and these shares are reported as indirectly owned by him through the trust.

How many total insider sell transactions are reported in this Arteris (AIP) Form 4?
The Form 4 reports one sell transaction for 100,000 shares of Arteris Common Stock. The filing’s transaction summary indicates a sell share total of 100,000 and no reported purchases, exercises, gifts, or restructuring transactions.

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SEC Form 4
FORM 4UNITED 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
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
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*
JANAC K CHARLES
(Last)(First)(Middle)
C/O ARTERIS, INC.
900 E. HAMILTON AVE., SUITE 300
(Street)
CAMPBELL CALIFORNIA 95008
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
Arteris, Inc. [ AIP ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirectorX10% Owner
XOfficer (give title below)Other (specify below)
President and CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
09/01/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Common Stock09/01/2026S(1)100,000D$20.7497(2)8,229,071IBayview Legacy(3)
Common Stock175,148D
Common Stock56,252ICharles and Lydia Janac Trust(4)
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Transaction made pursuant to a 10b5-1 trading plan that was adopted by K. Charles Janac, as the manager of Bayview Legacy, LLC, on December 12, 2025.
2. The price reported in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $20.465 to $21.410 inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, 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 range set forth in this footnote.
3. The Reporting Person is the manager of Bayview Legacy, LLC and as such is deemed to have voting and dispositive power of the shares beneficially owned by Bayview Legacy, LLC.
4. The shares are held by Charles and Lydia Janac Trust, for which the Reporting Person serves as trustee.
Remarks:
/s/ Paul Alpern, as Attorney-in-Fact for JANAC K CHARLES09/03/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR