Summit Therapeutics Inc. (SMMT)
Nasdaq: SMMT · Pharmaceutical Preparations · Miami, FL · filing with the SEC since 2014
Who owns Summit Therapeutics Inc.
As filed with the SECHolders of 5% or more
0
No Schedule 13D or 13G naming this company is on file.
Directors and officers
10
report now, of 21 people on the record since 2020. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 0 named at left.
Holders of 5% or moreshare of the class, as filed
No holder of 5% or more is on file in a Schedule 13D or 13G naming this company.
What SMMT reports owning in othersstakes of 5% or more, and other ties
8 subsidiaries in 5 countries, from the list filed with the 10-K filed Feb 23, 2026.
Insider tradesForm 4
0sales
9purchases
0sales on a scheduled plan
0people selling
$0sold, in dollars
$115Mbought, in dollars
Open-market trades on Form 4 from Oct 14, 2025 to Oct 14, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Oct 14, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window4 of 21 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Duggan Robert W | Co-Chief Executive Officer | 0 | $0 | 0 | 3 | $51.9M |
| Zanganeh Maky | Co-Chief Executive Officer | 0 | $0 | 0 | 3 | $51.9M |
| Soni Manmeet Singh | COO and CFO | 0 | $0 | 0 | 2 | $700,000 |
| Xia Yu | director | 0 | $0 | 0 | 1 | $10.0M |