Dropbox legal chief sells 12,382 shares

Dropbox’s chief legal officer sold shares under a pre-arranged Rule 10b5-1 trading plan and continues to hold a substantial equity position.

Rhea-AI Filing Summary

DROPBOX, INC. (DBX) reports that Chief Legal Officer William T. Yoon sold 12,382 shares of Class A Common Stock on September 4, 2026 in a sale transaction described as occurring in the open market or a private transaction. The weighted average sale price was $34.7845 per share, with individual trades executed between $34.37 and $34.97. After this sale, Yoon directly holds 366,693 shares, which include restricted stock units that may vest through February 15, 2030. The sale was made under a Rule 10b5-1 trading plan adopted on June 5, 2026.

Insider Trade Summary 10b5-1

Net Seller: 12,382 shares

Net Sell 1 txn

Insider Yoon William T

Role Chief Legal Officer

Sold 12,382 shs ($431K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock F1, F2, F3	12,382	$34.7845	$431K

Holdings After Transaction: Class A Common Stock — 366,693 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 $34.37 to $34.97. 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 February 15, 2030. 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: 12,382 shares Weighted average sale price: $34.7845 per share Trade price range: $34.37–$34.97 per share +3 more

6 metrics

Shares sold 12,382 shares Class A Common Stock sale reported for September 4, 2026

Weighted average sale price $34.7845 per share Average price across multiple trades on September 4, 2026

Trade price range $34.37–$34.97 per share Range of prices for the multiple trades executed in the transaction

Shares held after transaction 366,693 shares Direct Class A Common Stock holdings following the September 4, 2026 sale

Rule 10b5-1 plan adoption date June 5, 2026 Date the trading plan governing this sale was adopted

RSU vesting end date February 15, 2030 Restricted stock units in the holdings vest through this date

Key Terms

Rule 10b5-1 trading plan, restricted stock units, weighted average sale price, Class A Common Stock

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."

Class A Common Stock financial

"Each restricted stock unit represents the Reporting Person's right to"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

FAQ

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

What did DBX’s Chief Legal Officer report in this Form 4?

The Chief Legal Officer, William T. Yoon, reported selling 12,382 shares of Dropbox Class A Common Stock on September 4, 2026 at a weighted average price of $34.7845 per share, in an open-market or private transaction.

How many DBX shares does the insider hold after this transaction?

After the reported sale, William T. Yoon directly holds 366,693 shares of Dropbox Class A Common Stock. This total includes restricted stock units that are subject to vesting conditions through February 15, 2030.

Was the DBX insider sale made under a Rule 10b5-1 trading plan?

Yes. The filing states that the shares were sold pursuant to a Rule 10b5-1 trading plan adopted by William T. Yoon on June 5, 2026, indicating the sales were pre-arranged under that plan.

What price range were the DBX shares sold at in this transaction?

The transaction was executed in multiple trades at prices ranging from $34.37 to $34.97 per share. The reported $34.7845 figure represents the weighted average sale price across those trades.

What are the restricted stock units mentioned in the DBX Form 4?

The filing explains that certain securities in the post-transaction holdings are restricted stock units, each representing the right to receive one share of Class A Common Stock, subject to vesting schedules through February 15, 2030. Unvested units are cancelled if service ends.

Does this DBX Form 4 mention any derivative or option transactions?

No. The reported activity involves only non-derivative Class A Common Stock. The derivative security summary section shows no derivative transactions in this filing.

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

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Available on EDGAR 09/09/2026 - 05:15 PM EDT Accepted by SEC EDGAR 09/09/2026 - 05:14 PM EDT 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^*

Yoon William T

(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 Legal Officer

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)		12,382	D	$34.7845(2)	366,693(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 $34.37 to $34.97. 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 February 15, 2030. 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)