Dropbox officer may sell 1,631 company shares

Rhea-AI Filing Summary

DROPBOX, INC. (DBX) officer Sarah Schubach filed a Rule 144 notice for potential sales of company common stock. The filing covers 1,631 shares of Dropbox common stock, held via restricted stock units and to be sold through Morgan Stanley Smith Barney, and lists several prior 10b5-1 plan sales in recent months.

Key Figures

Shares covered by notice: 1,631 shares Aggregate market value: $58,226.70 10b5-1 sale on 08/20/2026: 1,631 shares; $55,470.31 +3 more

6 metrics

Shares covered by notice 1,631 shares Common stock in current Rule 144 filing for Sarah Schubach

Aggregate market value $58,226.70 Value associated with 1,631 shares in current Rule 144 notice

10b5-1 sale on 08/20/2026 1,631 shares; $55,470.31 Common stock sold under 10b5-1 plan for Sarah Schubach

10b5-1 sale on 07/31/2026 1,632 shares; $51,587.52 Common stock sold under 10b5-1 plan for Sarah Schubach

10b5-1 sale on 07/15/2026 1,306 shares; $39,349.78 Common stock sold under 10b5-1 plan for Sarah Schubach

10b5-1 sale on 06/30/2026 1,305 shares; $35,378.55 Common stock sold under 10b5-1 plan for Sarah Schubach

Key Terms

Rule 144, Restricted Stock Units, 10b5-1, Executive Financial Services

4 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Units financial

"Common | 08/15/2026 | Restricted Stock Units | Issuer"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

10b5-1 regulatory

"10b5-1 Sales for SARAH SCHUBACH 50 Hawthorne Street"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

FAQ

What does the Form 144 filing for DBX by Sarah Schubach disclose?

It discloses a notice under Rule 144 that officer Sarah Schubach may sell 1,631 shares of Dropbox common stock, held via restricted stock units, through Morgan Stanley Smith Barney, along with a history of recent 10b5-1 plan sales.

How many Dropbox (DBX) shares are covered by this Form 144?

The Form 144 covers 1,631 shares of Dropbox common stock, with an aggregate market value stated as $58,226.70 as of the filing details.

What type of securities is the Dropbox (DBX) insider planning to sell?

The securities are Dropbox common stock underlying Restricted Stock Units, with the RSUs specified as the nature of acquisition and the issuer as the source.

Were there recent 10b5-1 plan sales by the Dropbox (DBX) insider?

Yes. The filing lists 10b5-1 sales on 08/20/2026 (1,631 shares), 07/31/2026 (1,632 shares), 07/15/2026 (1,306 shares), and additional sales on 06/30/2026, 06/15/2026, and 06/01/2026.

On which market is the Dropbox (DBX) stock in this Form 144 listed?

The common stock referenced in the Form 144 is listed on NASDAQ, as indicated in the securities information section.

Who is the broker named in the Dropbox (DBX) Form 144 filing?

The broker handling the potential sales is Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, 8th Floor, New York, NY 10004.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 08/31/2026 - 04:32 PM Accepted by SEC EDGAR 08/31/2026 - 04:30 PM Learn about SEC filing dates

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	0002075704
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Dropbox, Inc.
SEC File Number	001-38434
Address of Issuer	50 Hawthorne Street San Francisco CALIFORNIA 94105
Phone	4159307766
Name of Person for Whose Account the Securities are To Be Sold	SARAH SCHUBACH
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	Officer

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	1631	58226.70	150561680	08/31/2026	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	08/15/2026	Restricted Stock Units	Issuer			1631	08/15/2026	N/A

* 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
10b5-1 Sales for SARAH SCHUBACH 50 Hawthorne Street San Francisco CA 94105	Common	08/20/2026	1631	55470.31
10b5-1 Sales for SARAH SCHUBACH 50 Hawthorne Street San Francisco CA 94105	Common	07/31/2026	1632	51587.52
10b5-1 Sales for SARAH SCHUBACH 50 Hawthorne Street San Francisco CA 94105	Common	07/15/2026	1306	39349.78
10b5-1 Sales for SARAH SCHUBACH 50 Hawthorne Street San Francisco CA 94105	Common	06/30/2026	1305	35378.55
10b5-1 Sales for SARAH SCHUBACH 50 Hawthorne Street San Francisco CA 94105	Common	06/15/2026	1306	35131.40
10b5-1 Sales for SARAH SCHUBACH 50 Hawthorne Street San Francisco CA 94105	Common	06/01/2026	1305	36096.30

144: Remarks and Signature

Remarks
Date of Notice	08/31/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/16/2025
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	/s/ Sarah Schubach
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)