GREYLOCK entities report large proposed AUR share sales (AUR)

Rhea-AI Filing Summary

AUR submitted Form 144 notices reporting proposed sales of Common Stock by affiliated holders, with transaction dates in 05/2026.

The excerpt lists multiple proposed dispositions by GREYLOCK 15 LIMITED PARTNERSHIP and related entities, including sales of 4,948,637 shares on 05/15/2026 and 312,882 shares on 05/18/2026, with dollar amounts shown alongside each sale.

Insights

Securities Counsel

Form 144 notices report proposed affiliate sales and accompanying dollar amounts.

These entries are administrative notices under Rule 144 describing proposed dispositions of Common Stock by affiliated holders. The excerpt shows specific sale dates (05/15/2026 and 05/18/2026) and per‑transaction share counts with proceeds, which are typical disclosure elements for Rule 144 submissions.

Cash‑flow treatment and whether sales occurred are not stated; subsequent reports or trade records would confirm actual executions. Future filings or broker records will show consummation and exact settlement details.

Key Figures

Form type: Form 144 Proposed sale (example): 4,948,637 shares Proceeds shown (example): $38,639,947.42 +3 more

6 metrics

Form type Form 144 Notice of proposed sale

Proposed sale (example) 4,948,637 shares Proposed sale by GREYLOCK 15 LIMITED PARTNERSHIP on <date>05/15/2026</date>

Proceeds shown (example) $38,639,947.42 Dollar amount listed alongside 4,948,637 shares on <date>05/15/2026</date>

Proposed sale (example) 312,882 shares Proposed sale by GREYLOCK 15 LIMITED PARTNERSHIP on <date>05/18/2026</date>

Proceeds shown (example) $2,348,241.99 Dollar amount listed alongside 312,882 shares on <date>05/18/2026</date>

Filer reference number 1082118 Identifier shown in the excerpt

Key Terms

Form 144, Rule 144 notice, proposed disposition, affiliate

4 terms

Form 144 regulatory

"144: Securities To Be Sold"

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.

Rule 144 notice regulatory

"144: Securities Sold During The Past 3 Months"

A Rule 144 notice is a public filing that an insider or holder of restricted stock submits when they plan to sell shares that aren’t freely tradable yet; it lists how many shares they intend to sell and under what conditions. For investors, it matters because it signals potential insider selling and an upcoming increase in shares available to the market—similar to someone announcing a big garage sale, which can affect supply and price expectations.

proposed disposition financial

"Securities To Be Sold | Merger/Acquisition | Stock Swap"

affiliate regulatory

"Issuer Information and reporting holders"

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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	1082118	7871434.54	1653863906	05/28/2026	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			1082118	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 LIMITED PARTNERSHIP 1654 Smallman St, Pittsburgh PA 15222	Common	05/18/2026	312882	2348241.99
GREYLOCK 15-A LIMITED PARTNERSHIP 1654 Smallman St, Pittsburgh PA 15222	Common	05/18/2026	17382	130455.39
GREYLOCK 15 PRINCIPALS LP 1654 Smallman St, Pittsburgh PA 15222	Common	05/18/2026	17382	130455.39
GREYLOCK 15 LIMITED PARTNERSHIP 1654 Smallman St, Pittsburgh PA 15222	Common	05/15/2026	4948637	38639947.42
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

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 AUR Form 144 filing report?

The filing reports proposed sales of Common Stock by affiliated holders in May 2026, listing dates, share counts, and dollar amounts for each proposed disposition. It is a Rule 144 notice of intended sales, not confirmation of executed trades.

Which holders are named in the AUR excerpt?

The excerpt names GREYLOCK 15 LIMITED PARTNERSHIP, GREYLOCK 15-A LIMITED PARTNERSHIP, and GREYLOCK 15 PRINCIPALS LP as reporting holders with proposed sales on specific 05/2026 dates and per‑transaction share counts.

How many shares does GREYLOCK 15 LIMITED PARTNERSHIP propose to sell?

Examples shown include proposed sales of 4,948,637 shares on 05/15/2026 (with $38,639,947.42) and 312,882 shares on 05/18/2026 (with $2,348,241.99) as listed in the excerpt.

Does Form 144 confirm the sales were completed?

No. Form 144 is a notice of proposed sales under Rule 144. The excerpt lists intended disposition dates and amounts; it does not confirm that the transactions were executed or settled.

Where are the proposed sale dates shown for AUR?

The excerpt shows proposed disposition dates of 05/15/2026 and 05/18/2026 for multiple transactions by the named holders, each paired with share counts and dollar figures.