Dropbox CFO sells 97,558 shares under plan

Dropbox’s CFO reported a planned open-market sale of 97,558 shares and continues to hold 690,666 shares including time-vesting RSUs.

Rhea-AI Filing Summary

DROPBOX, INC. (DBX) reported that Chief Financial Officer Ross Tennenbaum sold 97,558 shares of Class A Common Stock on September 10, 2026 in an open-market transaction at a weighted average price of $35.0172 per share, under a Rule 10b5-1 trading plan adopted on June 11, 2026.

After this sale, Tennenbaum directly holds 690,666 shares, which include restricted stock units that vest on a schedule extending through November 15, 2029, and any unvested units will be cancelled if his service with the company ends.

Insider Trade Summary 10b5-1

Net Seller: 97,558 shares

Net Sell 1 txn

Insider Tennenbaum Ross

Role Chief Financial Officer

Sold 97,558 shs ($3.42M)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F1, F2, F3	97,558	$35.0172	$3.42M

Holdings After Transaction: Class A Common Stock — 690,666 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 11, 2026.
2. F2. This transaction was executed in multiple trades at prices ranging from $35.00 to $35.09. 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 November 15, 2029. 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: 97,558 shares Weighted average sale price: $35.0172 per share Shares held after transaction: 690,666 shares +2 more

5 metrics

Shares sold 97,558 shares Open-market sale on September 10, 2026 by the CFO

Weighted average sale price $35.0172 per share Multiple trades ranging from $35.00 to $35.09 on September 10, 2026

Shares held after transaction 690,666 shares Direct holdings of CFO Ross Tennenbaum following the sale

Rule 10b5-1 plan adoption date June 11, 2026 Plan governing the CFO’s September 10, 2026 share sale

RSU vesting end date November 15, 2029 Latest vesting date for the CFO’s restricted stock units

Key Terms

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

weighted average sale price financial

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

restricted stock units financial

"Certain of these securities are 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.

Service Provider regulatory

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

FAQ

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

What insider transaction did Dropbox (DBX) disclose for its CFO?

Dropbox disclosed that CFO Ross Tennenbaum sold 97,558 shares of Class A Common Stock on September 10, 2026 in an open-market transaction at a weighted average price of $35.0172 per share, executed under a pre-arranged Rule 10b5-1 trading plan.

How many Dropbox (DBX) shares does the CFO hold after the reported sale?

After the sale, CFO Ross Tennenbaum directly holds 690,666 shares of Dropbox Class A Common Stock. The position includes restricted stock units that are subject to vesting through November 15, 2029.

Was the Dropbox (DBX) CFO’s share sale made under a Rule 10b5-1 plan?

Yes. The sale was made pursuant to a Rule 10b5-1 trading plan that Ross Tennenbaum adopted on June 11, 2026, meaning the trades were pre-arranged according to that plan’s terms.

At what price did the Dropbox (DBX) CFO sell his shares?

The reported per-share price is a weighted average of $35.0172. The trades were executed in multiple transactions at prices ranging from $35.00 to $35.09, with the weighted average price disclosed in the filing.

What does the filing say about the Dropbox (DBX) CFO’s restricted stock units?

The filing notes that certain of the CFO’s holdings are restricted stock units, each representing the right to receive one Class A share, vesting on a schedule through November 15, 2029. Any unvested units will be cancelled if he ceases to be a Service Provider.

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

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Available on EDGAR 09/14/2026 - 05:24 PM Accepted by SEC EDGAR 09/14/2026 - 05:24 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^*

Tennenbaum Ross

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/10/2026

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	09/10/2026		S(1)		97,558	D	$35.0172(2)	690,666(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 11, 2026.

2. This transaction was executed in multiple trades at prices ranging from $35.00 to $35.09. 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 November 15, 2029. 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	09/14/2026
	** 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)