Dropbox officer Sarah Schubach proposes 2,090-share sale

The prior-sales section lists five 10b5-1 sales dated July 31 through September 30, 2026.

Rhea-AI Filing Summary

Dropbox, Inc. officer Sarah Schubach reported a proposed sale of 2,090 common shares, with an approximate aggregate market value of $74,445.80 and an approximate sale date of October 15, 2026. Morgan Stanley Smith Barney LLC is listed as broker, and NASDAQ as the exchange. The notice says the shares to be sold were acquired upon vesting of restricted stock units on May 15 and August 15, 2026.

Key Figures

Proposed sale: 2,090 common shares; approximate aggregate market value $74,445.80 Dropbox shares outstanding: 150,561,680 shares Past sale — September 30, 2026: 2,025 shares; $65,893.50 gross proceeds +4 more

7 metrics

Proposed sale 2,090 common shares; approximate aggregate market value $74,445.80 Approximate sale date: October 15, 2026

Dropbox shares outstanding 150,561,680 shares Listed in the proposed-sale details

Past sale — September 30, 2026 2,025 shares; $65,893.50 gross proceeds Listed among 10b5-1 sales

Past sale — September 15, 2026 2,025 shares; $74,479.50 gross proceeds Listed among 10b5-1 sales

Past sale — August 31, 2026 1,631 shares; $57,900.50 gross proceeds Listed among 10b5-1 sales

Past sale — August 20, 2026 1,631 shares; $55,470.31 gross proceeds Listed among 10b5-1 sales

Past sale — July 31, 2026 1,632 shares; $51,587.52 gross proceeds Listed among 10b5-1 sales

Key Terms

Rule 144, 10b5-1 Sales, restricted stock units

3 terms

Rule 144 regulatory

"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.

10b5-1 Sales regulatory

"10b5-1 Sales for Sarah Schubach"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

restricted stock units financial

"acquired upon the vesting of restricted stock units"

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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many DBX shares did Sarah Schubach report for sale?

Sarah Schubach, an officer of Dropbox, reported a proposed sale of 2,090 common shares, with an approximate aggregate market value of $74,445.80 and an approximate sale date of October 15, 2026. Morgan Stanley Smith Barney LLC is listed as broker, and NASDAQ as the exchange.

What prior DBX stock sales are listed for Sarah Schubach?

The listed 10b5-1 sales were: September 30, 2026, 2,025 shares and $65,893.50 gross proceeds; September 15, 2026, 2,025 shares and $74,479.50; August 31, 2026, 1,631 shares and $57,900.50; August 20, 2026, 1,631 shares and $55,470.31; and July 31, 2026, 1,632 shares and $51,587.52.

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

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Available on EDGAR 10/15/2026 - 04:37 PM EDT Accepted by SEC EDGAR 10/15/2026 - 04:37 PM EDT 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	2090	74445.80	150561680	10/15/2026	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	05/15/2026	Restricted Stock Units	Issuer			2090	05/15/2026	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	09/30/2026	2025	65893.50
10b5-1 Sales for SARAH SCHUBACH 50 Hawthorne Street San Francisco CA 94105	Common	09/15/2026	2025	74479.50
10b5-1 Sales for SARAH SCHUBACH 50 Hawthorne Street San Francisco CA 94105	Common	08/31/2026	1631	57900.50
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

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units on 05/15/2026 and 08/15/2026.
Date of Notice	10/15/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	06/04/2026
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)