Robert W DugganUS

Co-Chief Executive Officer, Summit Therapeutics Inc. (SMMT) (+1 more)

Net worth (est.)
$11.7B
#16 in the US
¥1.84T · US-listed shares
Dividends (a year)
$0
Latest filing
2026-06-12
Form 3/4/5 transaction date

Holdings

CompanyHeld bySharesPriceValueDividends
Summit Therapeutics Inc.
SMMT · Co-Chief Executive Officer
Direct 573,883,879 $15.48 $8.9B —
PULSE BIOSCIENCES, INC.
PLSE
Direct 48,370,047 $50.89 $2.5B —
Summit Therapeutics Inc.
SMMT · Co-Chief Executive Officer
By the Mahkam Zanganeh Revocable Trust, with the Spouse of Reporting Person as Trustee (shared) 12,912,237 $15.48 $199.9M —
Summit Therapeutics Inc.
SMMT · Co-Chief Executive Officer
Indirect (shared) 3,399,925 $15.48 $52.6M —
Summit Therapeutics Inc.
SMMT · Co-Chief Executive Officer
By the Shaun Zanganeh Irrevocable Trust, with the Spouse of Reporting Person as Trustee (shared) 3,399,925 $15.48 $52.6M —
PULSE BIOSCIENCES, INC.
PLSE
Affiliated Company 1 630,109 $50.89 $32.1M —
PULSE BIOSCIENCES, INC.
PLSE
Affiliated Company 2 450,189 $50.89 $22.9M —
PULSE BIOSCIENCES, INC.
PLSE
Indirect 450,189 $50.89 $22.9M —
Summit Therapeutics Inc.
SMMT · Co-Chief Executive Officer
Immediate family member of Spouse 76,680 $15.48 $1.2M —
Summit Therapeutics Inc.
SMMT · Co-Chief Executive Officer
By Spouse 31,000 $15.48 $480K —
Estimated from SEC Form 3/4/5 holdings and prices from SEC Fails-to-Deliver and Form 13F data. Options and RSUs excluded. Source: U.S. Securities and Exchange Commission (EDGAR). SEC filings