Proposed resale: 5,498,487 common shares reported for AUR (selling holders listed)

Rhea-AI Filing Summary

AUR-related holders reported a proposed sale of $41,866,286.20 represented by 5,498,487 common shares. The notice lists three selling entries dated 05/15/2026, including two entries of 274,925 shares and one of 4,948,637 shares.

The transactions are shown as sales by affiliated limited partnerships and are recorded as occurring under a prior Stock Swap action dated 11/04/2021.

Insights

Securities Compliance Analyst

Form 144 notice lists proposed resale of 5,498,487 common shares by affiliated holders.

The filing records three selling entries dated 05/15/2026, two for 274,925 shares and one for 4,948,637 shares, with aggregate dollar amounts shown next to each row. The entries reference an earlier Stock Swap on 11/04/2021.

These are resale disclosures under securities rules; cash‑flow treatment and whether sales are immediate or staggered are not stated in the excerpt. Subsequent filings or broker reports may clarify execution method and timing.

Key Figures

Total shares proposed for resale: 5,498,487 shares Largest single selling entry: 4,948,637 shares Smaller selling entries (examples): 274,925 shares (two entries) +1 more

4 metrics

Total shares proposed for resale 5,498,487 shares aggregate of listed selling entries dated 05/15/2026

Largest single selling entry 4,948,637 shares GREYLOCK 15 LIMITED PARTNERSHIP entry dated 05/15/2026

Smaller selling entries (examples) 274,925 shares (two entries) GREYLOCK 15 PRINCIPALS LP and GREYLOCK 15-A LIMITED PARTNERSHIP, 05/15/2026

Dollar values shown $41,866,286.20 sum of row dollar amounts: $2,146,669.39, $2,146,669.39, $38,639,947.42

Key Terms

Form 144, Stock Swap, Selling holders

3 terms

Form 144 regulatory

"144: Securities To Be Sold — notice of proposed sale"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Stock Swap financial

"11/04/2021 | Merger/Acquisition | Issuer | Stock Swap"

Selling holders market

"144: Securities Sold During The Past 3 Months — GREYLOCK 15 PRINCIPALS LP"

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	17382	130455.39	1653863906	05/18/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	11/04/2021	Merger/Acquisition	Issuer			17382	11/04/2021	Stock Swap

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
GREYLOCK 15 PRINCIPALS LP 1654 Smallman St, Pittsburgh PA 15222	Common	05/15/2026	274925	2146669.39
GREYLOCK 15-A LIMITED PARTNERSHIP 1654 Smallman St, Pittsburgh PA 15222	Common	05/15/2026	274925	2146669.39
GREYLOCK 15 LIMITED PARTNERSHIP 1654 Smallman St, Pittsburgh PA 15222	Common	05/15/2026	4948637	38639947.42

144: Remarks and Signature

Remarks

Date of Notice

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the Form 144 for AUR show?

It shows proposed resale of 5,498,487 common shares by affiliated holders on 05/15/2026. The notice lists two entries of 274,925 shares and one of 4,948,637 shares, with dollar values recorded alongside each row.

Who are the selling holders listed in the AUR filing?

The filing names affiliated entities including GREYLOCK 15 PRINCIPALS LP and two affiliated partnerships. Each entity is shown with its proposed share amount and an associated dollar value in the table.

Are proceeds going to the issuer in this Form 144?

Proceeds recipient is not stated in the excerpt. The table lists selling holders and dollar values; the filing does not specify whether proceeds flow to the issuer or to selling holders.

Do the entries reference prior corporate actions for AUR?

Yes; the excerpt references a Stock Swap dated 11/04/2021 as the acquisition/event related to the securities now proposed for resale. No further transaction terms are shown in the excerpt.

How many shares per holder are shown as examples?

Examples shown include GREYLOCK 15 PRINCIPALS LP: 274,925 shares and GREYLOCK 15 LIMITED PARTNERSHIP: 4,948,637 shares, both dated 05/15/2026. These are representative rows from the selling entries.