Dropbox broker unwinds 383,800 co-CEO share sales

Q: How many Dropbox (DBX) shares were involved in the corrected report?

A broker executed unauthorized sales of 383,800 Class A shares on November 2, 2026; the broker later unwound the sales and restored the shares to the Trust's account.

The sales were reported in a Form 4 filed November 4, 2026, before the broker unwound them.

Available on EDGAR 11/09/2026 - 06:52 PM EST Accepted by SEC EDGAR 11/09/2026 - 06:52 PM EST

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

How Sentiment works How the balance works

Form Type

4/A

Rhea-AI Filing Summary

Dropbox, Inc. Co-CEO and director Andrew Houston amended a report concerning shares held by the Andrew Houston Revocable Trust, for which he serves as trustee. A broker inadvertently executed unauthorized sales of 383,800 Class A shares on November 2, 2026, during a restricted period defined under a Rule 10b5-1 trading plan entered by the Trust. The broker later unwound the sales and restored the shares; the amended entry reports 0 transaction shares and 383,800 shares held indirectly afterward.

Insider Trade Summary

Sale: 0 shares

Sale 1 txn

Insider Houston Andrew

Role Co-CEO

Sold 0 shs ($0.00)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock ^{F1, F2}	0	$0.00	$0.00

Holdings After Transaction: Class A Common Stock — 383,800 shares (Indirect, See Footnote)

Holdings Before and After: Class A Common Stock, 383,800 to 383,800 shares (Indirect, See Footnote)

Footnotes (2)

F1. This Form 4/A is filed to correct a broker error. On November 2, 2026, the broker inadvertently executed unauthorized sales of 383,800 shares of Class A Common Stock during a restricted period defined under a Rule 10b5-1 trading plan entered by the Trust (as defined below). These unauthorized sales were reported on the Form 4 filed on November 4, 2026. The broker subsequently unwound these sales and restored the shares to the Trust's account.
F2. Shares held by the Andrew Houston Revocable Trust u/a/d 9/7/2011, for which Reporting Person serves as trustee.

Key Figures

Unauthorized sales: 383,800 shares Shares restored: 383,800 shares Amended transaction amount: 0 shares +1 more

4 metrics

Unauthorized sales 383,800 shares Class A Common Stock; November 2, 2026

Shares restored 383,800 shares Restored to the Trust's account after the broker unwound the sales

Amended transaction amount 0 shares Transaction entry for Class A Common Stock

Indirect shares following transaction 383,800 shares Shares held by the Andrew Houston Revocable Trust

Key Terms

Rule 10b5-1 trading plan, restricted period, Revocable Trust

3 terms

Rule 10b5-1 trading plan regulatory

"under a Rule 10b5-1 trading plan entered by the Trust"

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 period regulatory

"during a restricted period defined under a Rule 10b5-1 trading plan"

Revocable Trust financial

"Andrew Houston Revocable Trust u/a/d 9/7/2011"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

FAQ

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

How many Dropbox (DBX) shares were involved in the corrected report?

A broker executed unauthorized sales of 383,800 Class A shares on November 2, 2026; the broker later unwound the sales and restored the shares to the Trust's account.

Why was Dropbox (DBX) Form 4/A amended?

The amendment corrects a broker error. The unauthorized sales had been reported on a Form 4 filed November 4, 2026, and were subsequently unwound, with the shares restored to the Trust's account.

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

Form 4 Insider Transactions: What Each Field Means →

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

Add on Google

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).

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^*

Houston Andrew

(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	X	10% Owner
X	Officer (give title below)		Other (specify below)
	Co-CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/02/2026

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)
11/04/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Class A Common Stock	11/02/2026		S		0⁽¹⁾	D	$0	383,800	I	See Footnote⁽²⁾

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. This Form 4/A is filed to correct a broker error. On November 2, 2026, the broker inadvertently executed unauthorized sales of 383,800 shares of Class A Common Stock during a restricted period defined under a Rule 10b5-1 trading plan entered by the Trust (as defined below). These unauthorized sales were reported on the Form 4 filed on November 4, 2026. The broker subsequently unwound these sales and restored the shares to the Trust's account.

2. Shares held by the Andrew Houston Revocable Trust u/a/d 9/7/2011, for which Reporting Person serves as trustee.

Remarks:

	/s/ Cara Angelmar, Attorney-in-Fact	11/09/2026
	** 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)

Source: View Original Filing on SEC EDGAR