Enanta Pharmaceuticals Inc (ENTA) Insider Ownership

Historic Insider Ownership Trends

ENTA's three largest insider shareholders as of March 23, 2026 are Jay R. Luly (President And Ceo, 871.87K shares), Yat Sun Or (Chief Scientific Officer, 374.85K shares), Paul J Mellett (Chief Fin. Admin Officer, 95.88K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares (Direct) Shares (Indirect) Report Date
Jay R. Luly President And Ceo 871,871 0 13 Feb, 2026
Yat Sun Or Chief Scientific Officer 374,854 0 13 Feb, 2026
Paul J Mellett Chief Fin. Admin Officer 95,884 0 14 Feb, 2025
Nathaniel S. Gardiner Chief Legal Officer 75,688 0 27 Feb, 2024
Brendan Luu Chief Business Officer 41,634 0 13 Feb, 2026
Tara Lynn Kieffer Chief Product Strategy Officer 33,925 0 13 Feb, 2026
Scott T. Rottinghaus Chief Medical Officer 25,254 0 13 Feb, 2026
Harry R. Iii Trout See Remarks 16,348 0 05 Dec, 2025
Terry Vance 5,800 0 15 Dec, 2023
Matthew Paul Kowalsky Chief Legal Officer 3,591 0 13 Feb, 2026

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
11 Mar, 2026 Yujiro S Hata Stock Option (right to buy) A 20,000 $0.00 20,000 D A
11 Mar, 2026 Mark G Foletta Stock Option (right to buy) A 20,000 $0.00 20,000 D A
11 Mar, 2026 Terry Vance Stock Option (right to buy) A 20,000 $0.00 20,000 D A
11 Mar, 2026 Lesley Russell Stock Option (right to buy) A 20,000 $0.00 20,000 D A
11 Mar, 2026 Kristine Peterson Stock Option (right to buy) A 20,000 $0.00 20,000 D A
11 Mar, 2026 Bruce L A Carter Stock Option (right to buy) A 20,000 $0.00 20,000 D A
12 Feb, 2026 Yat Sun Or Common Stock A 1,650 $0.00 373,042 D A
12 Feb, 2026 Tara Lynn Kieffer Common Stock A 1,575 $0.00 32,195 D A
12 Feb, 2026 Scott T. Rottinghaus Common Stock A 1,650 $0.00 23,442 D A
12 Feb, 2026 Jay R. Luly Common Stock A 4,800 $0.00 862,826 D A
12 Feb, 2026 Matthew Paul Kowalsky Common Stock A 1,318 $0.00 1,318 D A
12 Feb, 2026 Brendan Luu Common Stock A 1,575 $0.00 39,904 D A
12 Feb, 2026 Brendan Luu Common Stock A 4,987 $0.00 44,891 D A
12 Feb, 2026 Scott T. Rottinghaus Common Stock A 5,225 $0.00 28,667 D A
12 Feb, 2026 Yat Sun Or Common Stock A 5,225 $0.00 378,267 D A
12 Feb, 2026 Matthew Paul Kowalsky Common Stock A 4,175 $0.00 5,493 D A
12 Feb, 2026 Tara Lynn Kieffer Common Stock A 4,987 $0.00 37,182 D A
12 Feb, 2026 Jay R. Luly Common Stock A 15,200 $0.00 878,026 D A
12 Feb, 2026 Yat Sun Or Common Stock D 3,413 $14.25 374,854 D F
12 Feb, 2026 Tara Lynn Kieffer Common Stock D 3,257 $14.25 33,925 D F