Dropbox director sells 4,598 shares at $34.78

Dropbox director Lisa M. Campbell sold shares under a pre-established Rule 10b5-1 trading plan and continues to hold stock and unvested RSUs.

Rhea-AI Filing Summary

DROPBOX, INC. (DBX) director Lisa M. Campbell reported selling 4,598 shares of Class A Common Stock on September 4, 2026 at a weighted average price of $34.78 per share in an open-market transaction under a Rule 10b5-1 trading plan adopted on June 5, 2026.

After this sale, she directly holds 19,471 shares, including restricted stock units that each represent the right to receive one Class A share, subject to vesting through May 21, 2027 or the day prior to Dropbox’s next annual stockholders’ meeting; unvested units will be cancelled if service ends.

Insider Trade Summary 10b5-1

Net Seller: 4,598 shares

Net Sell 1 txn

Insider Campbell Lisa M

Role Director

Sold 4,598 shs ($160K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F1, F2, F3	4,598	$34.7822	$160K

Holdings After Transaction: Class A Common Stock — 19,471 shares (Direct)

Footnotes (3)

1. F1. These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.
2. F2. This transaction was executed in multiple trades at prices ranging from $34.39 to $34.94. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
3. F3. Certain of these securities are restricted stock units. Each restricted stock unit represents the Reporting Person's right to receive one share of Class A Common Stock, subject to the applicable vesting schedule through May 21, 2027 or the day prior to the date of the Issuer's next annual meeting of stockholders. In the event the Reporting Person ceases to be a Service Provider, the unvested restricted stock units will be cancelled by the Issuer.

Key Figures

Shares sold: 4,598 shares Weighted average sale price: $34.78 per share Post-transaction holdings: 19,471 shares +3 more

6 metrics

Shares sold 4,598 shares Open-market sale by director on September 4, 2026

Weighted average sale price $34.78 per share Sale of 4,598 shares on September 4, 2026

Post-transaction holdings 19,471 shares Direct Class A Common Stock holdings after the sale

Trade price range $34.39–$34.94 per share Range of prices across multiple trades comprising the sale

Rule 10b5-1 plan adoption date June 5, 2026 Date Lisa M. Campbell adopted the trading plan used for this sale

RSU vesting end date May 21, 2027 Restricted stock units vest through this date or the day before the next annual meeting

Key Terms

Rule 10b5-1 trading plan, restricted stock units, weighted average sale price, Service Provider

4 terms

Rule 10b5-1 trading plan regulatory

"These shares were sold pursuant to a Rule 10b5-1 trading plan adopted"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

restricted stock units financial

"Certain of these securities are restricted stock units. Each restricted"

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.

weighted average sale price financial

"The price reported above reflects the weighted average sale price."

Service Provider regulatory

"In the event the Reporting Person ceases to be a Service Provider,"

FAQ

What insider transaction did Dropbox (DBX) report for Lisa M. Campbell?

Lisa M. Campbell, a director of Dropbox (DBX), sold 4,598 shares of Class A Common Stock on September 4, 2026 at a weighted average price of $34.78 per share in an open-market sale.

Was the Dropbox (DBX) insider sale made under a Rule 10b5-1 plan?

Yes. The sale was made pursuant to a Rule 10b5-1 trading plan that Lisa M. Campbell adopted on June 5, 2026, meaning the trades were pre-arranged under that plan.

How many Dropbox (DBX) shares does Lisa M. Campbell hold after the sale?

Following the reported transaction, Lisa M. Campbell directly holds 19,471 shares of Dropbox Class A Common Stock, which includes shares underlying restricted stock units subject to future vesting.

What price range applied to Lisa M. Campbell’s Dropbox (DBX) share sale?

The sale was executed in multiple trades at prices ranging from $34.39 to $34.94 per share. The reported $34.78 figure is the weighted average sale price for the 4,598 shares sold.

What are the vesting terms of Lisa M. Campbell’s Dropbox (DBX) restricted stock units?

Each restricted stock unit represents the right to receive one Dropbox Class A share, subject to a vesting schedule through May 21, 2027 or the day prior to the next annual stockholders’ meeting. Unvested units will be cancelled if she ceases to be a Service Provider.

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Available on EDGAR 09/09/2026 - 05:16 PM Accepted by SEC EDGAR 09/09/2026 - 05:15 PM Learn about SEC filing dates

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Campbell Lisa M

(Last) (First) (Middle)

50 HAWTHORNE STREET

(Street)

SAN FRANCISCO CALIFORNIA 94105

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
DROPBOX, INC. [ DBX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/04/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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
Class A Common Stock	09/04/2026		S(1)		4,598	D	$34.7822(2)	19,471(3)	D

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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2026.

2. This transaction was executed in multiple trades at prices ranging from $34.39 to $34.94. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

3. Certain of these securities are restricted stock units. Each restricted stock unit represents the Reporting Person's right to receive one share of Class A Common Stock, subject to the applicable vesting schedule through May 21, 2027 or the day prior to the date of the Issuer's next annual meeting of stockholders. In the event the Reporting Person ceases to be a Service Provider, the unvested restricted stock units will be cancelled by the Issuer.

Remarks:

	/s/ Cara Angelmar, Attorney-in-Fact	09/09/2026
	** Signature of Reporting Person	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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)