Recent insider transactions reported to the SEC on Form 4 — directors and officers buying or selling their own company’s stock. Sourced directly from public SEC filings, latest filed Oct 5, 2026.
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Counts cover the 24 most recent Form 4 filings Tradune holds for DBX (filed Jul 9 – Oct 5, 2026); the score below covers only the trailing 90 days (0 buys, 15 sells). No completed check of DBX's Form 4 list on SEC EDGAR is on record yet; the latest DBX filing Tradune holds was filed Oct 5, 2026. This is not guaranteed to be the complete record — see DBX's full Form 4 filing history on SEC EDGAR.
Open-market activity, last 90 days
Purchases (Form 4 code P) and sales (code S) on the 21 filings Tradune holds for DBX filed Jul 31 – Oct 5, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
filed before Apr 1, 2023, or no checkbox value in the filing data
Counts are Form 4 lines as filed. The checkbox is one per filing, so every sale on a filing with the box checked is counted there even if only some of its transactions were under a plan; it records what the filer disclosed, and the three categories are not a judgement about why a sale was made.
Open-market purchases and sales by insider
Insider
Buys
Sells
Shares bought
Shares sold
Value
Sarah Elizabeth SchubachChief Accounting Officer
0
5
—
8,944
−$305,331
Andrew HoustonCo-CEO
0
3
—
738,100
−$25,489,029
Ross TennenbaumChief Financial Officer
0
1
—
97,558
−$3,416,208
Ashraf AlkarmiCo-CEO
0
1
—
28,800
−$1,023,454
Eric T. WebsterChief Business Officer
0
1
—
15,830
−$539,694
William T. YoonChief Legal Officer
0
1
—
12,382
−$430,702
Ali DasdanChief Technology Officer
0
1
—
11,332
−$386,732
Lisa M. CampbellDirector
0
1
—
4,598
−$159,929
Karen PeacockDirector
0
1
—
2,000
−$66,000
Value = shares × the price reported on each Form 4 (+ purchases, − sales); every open-market line in this window disclosed a price.
Insider-activity score
0/ 100
Net insider sales
0 distinct buyers0 buy · 15 sell tx
Summarises ~90 days of public SEC Form 4 activity — more distinct buyers, officer involvement and net buying score higher. A description of filing activity, not a rating or buy signal. How this score is computed →
How to read this: an open-market purchase (Form 4 code P) is a buy at the market price with the insider’s own money, as opposed to a grant, award or option exercise; an open-market sale is code S. When two or more distinct insiders report open-market purchases in the same 90-day window, this site labels that a cluster — a definition, not a forecast; see insider cluster buying.
“Held after” is Form 4 Table I column 5; “Change” = shares ÷ holdings before the trade (held after − shares for an acquisition, held after + shares for a disposition).
Insider Buying at DBX
No open-market insider purchases (Form 4 code P) were reported for DBX between Jul 9, 2026 and Oct 5, 2026. The filings below may include other transaction types — sales, grants, option exercises, and tax withholding — shown for completeness; they are not open-market purchases.
† change in this filer’s own reported holding line (Form 4 Table I, col. 5), not of total company ownership; small prior holdings produce large percentages, so under 100 shares the prior holding is shown instead.
“10b5-1 box checked” = the filer checked the Form 4 box stating that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c); “10b5-1 box not checked” = the box was left blank, which does not prove that no plan exists. The box applies to Form 4s filed from April 1, 2023; older filings, and boxes we could not read, carry no tag. What the 10b5-1 box means.
How many insiders bought DBX stock in these Form 4 filings?
No open-market purchases (Form 4 code P) of DBX shares were reported by Dropbox Inc insiders between Jul 9, 2026 and Oct 5, 2026. The 24 filings shown on this page cover other transaction types — sales, grants, option exercises, and tax withholding.
Who filed the most recent Form 4 for DBX?
The most recent Form 4 on this page was filed by Andrew Houston (Co-CEO) on Oct 5, 2026, reporting 3 transactions. The original document is linked from the filing list above on SEC EDGAR. Amended filings (Form 4/A) may later revise reported figures.
What was the largest open-market DBX insider sale shown?
The largest open-market sale among the filings shown was 354,300 DBX shares at $34.01 (about $12,049,814) by Andrew Houston (Co-CEO) on Oct 1, 2026. Value is shares × the price reported on the Form 4; that Form 4 has the Rule 10b5-1 box checked.
New to Form 4s? The transaction codes, the 90-day window and the 0–100 score are defined on the insider-activity score methodology page.
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This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.