Notice of Proposed Sale · 144

Dropbox, Inc.

DBXNASDAQEQUITYCurrent

Notice of Proposed Sale

Filed Sep 30, 2026Accepted Sep 30, 2026, 4:20 PM EDTFiling CIK 2075704Accession 0001950047-26-009882

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer: DROPBOX INC
Issuer CIK: 0001467623
SEC file number: 001-38434
Phone: 4159307766
Person for whose account securities are to be sold: SARAH SCHUBACH
Relationships to issuer: Officer
Street: 50 Hawthorne Street
City: San Francisco
State / country code: CA
Postal code: 94105

Securities proposed for sale

Securities proposed for sale · 1 reported row
Security	Proposed units	Aggregate market value	Units outstanding	Approximate sale date	Exchange	Broker / market maker
Common	2,025	66,217.50	150,561,680	09/30/2026	NASDAQ	Morgan Stanley Smith Barney LLC Executive Financial Services

Broker / market maker — proposed row 1, entry 1

Name: Morgan Stanley Smith Barney LLC Executive Financial Services
Street: 1 New York Plaza
Street (continued): 8th Floor
City: New York
State / country code: NY
Postal code: 10004

Acquisition of securities to be sold

Acquisition of securities to be sold · 1 reported row
Security	Acquired	Nature of acquisition	Acquired from	Amount acquired	Gift transaction	Payment date	Nature of payment
Common	05/15/2026	Restricted Stock Units	Issuer	2,025	N	05/15/2026	N/A

Sales reported in the preceding three months

Sales reported in the preceding three months · 5 reported rows
Seller	Security	Sale date	Amount sold	Gross proceeds
10b5-1 Sales for SARAH SCHUBACH	Common	09/15/2026	2,025	74,479.50
10b5-1 Sales for SARAH SCHUBACH	Common	08/31/2026	1,631	57,900.50
10b5-1 Sales for SARAH SCHUBACH	Common	08/20/2026	1,631	55,470.31
10b5-1 Sales for SARAH SCHUBACH	Common	07/31/2026	1,632	51,587.52
10b5-1 Sales for SARAH SCHUBACH	Common	07/15/2026	1,306	39,349.78

Seller — prior-sale row 1, entry 1

Name: 10b5-1 Sales for SARAH SCHUBACH
Street: 50 Hawthorne Street
City: San Francisco
State / country code: CA
Postal code: 94105

Seller — prior-sale row 2, entry 1

Name: 10b5-1 Sales for SARAH SCHUBACH
Street: 50 Hawthorne Street
City: San Francisco
State / country code: CA
Postal code: 94105

Seller — prior-sale row 3, entry 1

Name: 10b5-1 Sales for SARAH SCHUBACH
Street: 50 Hawthorne Street
City: San Francisco
State / country code: CA
Postal code: 94105

Seller — prior-sale row 4, entry 1

Name: 10b5-1 Sales for SARAH SCHUBACH
Street: 50 Hawthorne Street
City: San Francisco
State / country code: CA
Postal code: 94105

Seller — prior-sale row 5, entry 1

Name: 10b5-1 Sales for SARAH SCHUBACH
Street: 50 Hawthorne Street
City: San Francisco
State / country code: CA
Postal code: 94105

Prior-sale reporting

Nothing to report for the preceding three months: N

Remarks

The securities to be sold were acquired upon the vesting of restricted stock units on 05/15/2026 and 08/15/2026.

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