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Summit Therapeutics Inc. (SMMT)

Summit Therapeutics Inc. (SMMT) Insider Trading

Directors, officers and holders of more than 10% of SMMT report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 72 transactions on file: 13 with code P, 0 with code S and 37 with other codes.

DateInsiderCodeShares
Oct 8, 2026Anand BhaskarA Award100,000
Jun 12, 2026Zanganeh MahkamP Purchase3,810,000
Jun 12, 2026DUGGAN ROBERT WP Purchase3,810,000
Jun 4, 2026Soni Manmeet SinghP Purchase25,000
Jun 4, 2026Soni Manmeet SinghP Purchase25,000
Jun 4, 2026DUGGAN ROBERT WP Purchase100,000
Jun 4, 2026Zanganeh MahkamP Purchase100,000
Jan 8, 2026Anand BhaskarA Award30,000
Jan 2, 2026Zanganeh MahkamA Award11,232
Jan 2, 2026Booth Robert F.A Award35,000
Jan 2, 2026Cesano AlessandraA Award3,219
Jan 2, 2026Cesano AlessandraA Award35,000
Jan 2, 2026Clark Kenneth AA Award17,796
Jan 2, 2026Clark Kenneth AA Award35,000
Jan 2, 2026Ronaghi MostafaA Award35,000
Jan 2, 2026Huber JeffA Award9,885
Jan 2, 2026Huber JeffA Award35,000
Jan 2, 2026Xia YuA Award35,000
Jan 2, 2026Booth Robert F.A Award7,180
Jan 2, 2026DUGGAN ROBERT WA Award11,232
Oct 21, 2025DUGGAN ROBERT WA Award266,808
Oct 21, 2025Zanganeh MahkamA Award266,808
Oct 21, 2025Xia YuP Purchase533,617
Oct 21, 2025DUGGAN ROBERT WA Award13,980,789
Oct 21, 2025DUGGAN ROBERT WP Purchase26,680
Oct 21, 2025Anand BhaskarA Award26,680
Oct 21, 2025Soni Manmeet SinghA Award53,361
Oct 21, 2025Zanganeh MahkamP Purchase26,680
Oct 21, 2025Zanganeh MahkamA Award13,980,789
Sep 18, 2025Anand BhaskarA Award50,000
Sep 11, 2025DUGGAN ROBERT WP Purchase5,000
Sep 11, 2025Zanganeh MahkamP Purchase5,000
Sep 10, 2025Zanganeh MahkamP Purchase333,394
Sep 10, 2025DUGGAN ROBERT WP Purchase333,394
May 30, 2025Zanganeh MahkamM Exercise74,545
May 30, 2025Zanganeh MahkamM Exercise74,545
May 30, 2025DUGGAN ROBERT WM Exercise74,545
May 30, 2025DUGGAN ROBERT WM Exercise74,545
Apr 29, 2025Zanganeh MahkamA Award400,000
Apr 29, 2025Zanganeh MahkamA Award9,590,558
Apr 29, 2025Soni Manmeet SinghA Award11,200,000
Apr 29, 2025Anand BhaskarA Award600,000
Apr 29, 2025Anand BhaskarA Award75,000
Apr 29, 2025DUGGAN ROBERT WA Award1,040,000
Apr 29, 2025DUGGAN ROBERT WA Award400,000
Apr 29, 2025DUGGAN ROBERT WA Award9,590,558
Apr 29, 2025Zanganeh MahkamA Award1,040,000
Apr 8, 2025Zanganeh MahkamX In-the-Money3,985,055
Apr 8, 2025DUGGAN ROBERT WX In-the-Money3,985,055
Apr 8, 2025Zanganeh MahkamX In-the-Money3,985,055

The full Form 4 history is on the SMMT company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.