Sec Form 4 Filing - Norman-Elvenich Alexander @ Matternet, Inc. - 2026-05-22

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED 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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Norman-Elvenich Alexander 2. Issuer Name and Ticker or Trading Symbol Matternet, Inc. [ NONE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Operating Officer (Last) (First) (Middle) C/O MATTERNET, INC., 355 RAVENDALE DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 05/22/2026 (Street) MOUNTAIN VIEW, CA94043 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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) Code V Amount (A) or (D) Price

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Employee Stock Option (right to buy) ( 1 ) 05/22/2026 A 10,401 ( 2 ) 12/23/2028 Common Stock 10,401 $ 0 10,401 D Employee Stock Option (right to buy) ( 1 ) 05/22/2026 A 31,202 ( 2 ) 10/13/2030 Common Stock 31,202 $ 0 31,202 D Employee Stock Option (right to buy) ( 1 ) 05/22/2026 A 83,205 ( 2 ) 10/26/2031 Common Stock 83,205 $ 0 83,205 D Employee Stock Option (right to buy) ( 1 ) 05/22/2026 A 124,807 ( 3 ) 10/12/2033 Common Stock 124,807 $ 0 124,807 D Employee Stock Option (right to buy) ( 1 ) 05/22/2026 A 62,403 ( 3 ) 12/19/2034 Common Stock 62,403 $ 0 62,403 D Employee Stock Option (right to buy) ( 1 ) 05/22/2026 A 104,006 ( 3 ) 12/21/2035 Common Stock 104,006 $ 0 104,006 D Employee Stock Option (right to buy) ( 1 ) 05/22/2026 A 416,023 ( 3 ) 12/21/2035 Common Stock 416,023 $ 0 416,023 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Norman-Elvenich Alexander C/O MATTERNET, INC. 355 RAVENDALE DRIVE MOUNTAIN VIEW, CA94043 Chief Operating Officer Signatures /s/ Jason Benjamin Secore, Attorney-in-Fact 05/27/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Received in connection with the Issuer's merger (the "Merger") with Matternet, Inc. ("Legacy Matternet") in accordance with the terms of the Agreement and Plan of Merger and Reorganization dated as of May 22, 2026, by and among the Issuer (f/k/a Los Altos Ventures Corp.), Matternet Acquisition Co. and Legacy Matternet (the "Merger Agreement"), in exchange for options of Legacy Matternet. Each vested and unvested option to purchase shares of common stock of Legacy Matternet outstanding immediately prior to the effective time of the Merger was assumed by the Issuer and converted into an option to purchase shares of common stock equal to the product of (a) the number of shares of common stock subject to such option immediately prior to the effective time of the Merger and (b) 2.0801 (the "Conversion Ratio"), at an exercise price per share equal to (i) the exercise price per share of such option immediately prior to the effective time of the Merger divided by (ii) the Conversion Ratio. ( 2 )The shares subject to the option shall become vested and exercisable according to the following schedule: 25% of the shares subject to the option shall vest on the first anniversary of the vesting commencement date, and the remaining shares shall vest in equal monthly installments over the next 36 months. ( 3 )The shares subject to the option shall become vested and exercisable in 48 equal monthly installments from the vesting commencement date.

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).

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