Massivemarkets

SEC Form 4

Dropbox, Inc. (DBX) insider trading

In the 12 months to Oct 26, 2026, 11 DBX insiders reported open-market sales of $58.7M across 64 filings; no open-market purchases were filed.

Latest filing · Last 12 months · Source: SEC EDGAR · How we count

Open-market sales
$58.7M
64 filings · 11 insiders
Open-market purchases
$0
0 filings
Pre-arranged sales (10b5-1)
62 of 64
$57.6M of $58.7M sold (98%)

Who traded DBX, and when

  • Sale
  • Sale, pre-arranged (10b5-1)

DBX daily close from Oct 27, 2025 to Oct 26, 2026, between $22.06 and $37.83, last $37.68. 64 sale and 0 purchase filings by 11 insiders, marked at their filing dates. Andrew Houston, Chief Executive Officer → Co-CEO: sold $48.0M across 13 filings, first filed Nov 18, 2025, last Oct 15, 2026. Ross Tennenbaum, Chief Financial Officer: sold $3.4M across 1 filing, first filed Sep 14, 2026, last Sep 14, 2026. Ashraf Alkarmi, General Manager, Core → Co-CEO: sold $2.3M across 4 filings, first filed Nov 19, 2025, last Sep 15, 2026. Ali Dasdan, Chief Technology Officer: sold $1.4M across 6 filings, first filed Nov 19, 2025, last Aug 19, 2026. William T. Yoon, Chief Legal Officer: sold $1.1M across 4 filings, first filed Nov 19, 2025, last Sep 9, 2026. Sarah Elizabeth Schubach, Chief Accounting Officer: sold $1.0M across 24 filings, first filed Nov 3, 2025, last Oct 19, 2026. 5 others: sold $1.5M across 12 filings, first filed Nov 3, 2025, last Sep 9, 2026.

Largest mark · tap a row for others

Andrew Houston · Co-CEO

Sale $13,439,216

383,800 shares at $35.02 avg

Filed Sep 14, 2026 · traded Sep 10

Pre-arranged (10b5-1) · close on filing date $37.31

DBX daily closelast $37.68

Andrew Houston · Chief Executive Officer → Co-CEO

$48.0M sold

Ross Tennenbaum · Chief Financial Officer

$3.4M sold

Ashraf Alkarmi · General Manager, Core → Co-CEO

$2.3M sold

Ali Dasdan · Chief Technology Officer

$1.4M sold

William T. Yoon · Chief Legal Officer

$1.1M sold

Sarah Elizabeth Schubach · Chief Accounting Officer

$1.0M sold

5 others

$1.5M sold
One row per insider, smaller filers combined; marks sit at the SEC filing date, sized by dollar value.

Open-market trades

64 filings in the last 12 months
Other insider activity (not market trades) · 52 records
  • Tax withholding22 records
  • Grants and awards16 records
  • Other14 records

Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.

How to read this page

Open-market purchase or sale
A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
Pre-arranged (10b5-1)
The insider marked the filing as made under a trading plan set up in advance (SEC Rule 10b5-1). The mark covers the whole filing, and an unmarked filing may still be under a plan.
Role
The title on each filing. Someone whose title changed shows more than one.
Filing date
Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.
Counted once
When several owners (a fund and its partners, say) report the same trade, it's counted once. Corrected filings replace the originals.

Frequently asked questions

Has Dropbox, Inc.'s CEO sold stock?

Yes. Andrew Houston (CEO) sold 1,575,598 shares ($48.0M) between Nov 2025 and Oct 2026, all under a pre-arranged 10b5-1 plan. Ashraf Alkarmi (CEO) sold 51,500 shares ($1.7M) between Jun 2026 and Sep 2026, $1.0M of it under a pre-arranged 10b5-1 plan.

How current is DBX’s insider data?

These are DBX Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.

What counts as an open-market buy or sell?

Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.

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Track DBX insider trades with your agent

This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:

Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for DBX every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.

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