Greenwich LifeSciences, Inc. (GLSI) Insider Ownership

Historic Insider Ownership Trends

As of July 26, 2026, the three largest insider holders of GLSI are Snehal Patel (Ceo And Cfo, 5.60Mn shares), Snehal Patel (Ceo And Cfo, 2.71Mn shares), David Mcwilliams (Director, 620.30K 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
David Mcwilliams - 620,301 0 15 Dec, 2021
Jaye Thompson Vp Clinical Reg Affairs 264,148 0 25 Nov, 2024
Frank Joseph Daugherty Chief Medical Officer 90,121 0 26 Apr, 2022
Snehal Patel Ceo And Cfo 5,604,102 0 15 Jan, 2026
Kenneth Hallock - 397,304 0 24 Jan, 2022

* 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
13 Jan, 2026 Snehal Patel Common Stock A 1,800 $29.83 5,604,102 D P
13 Jan, 2026 Snehal Patel Common Stock A 1,800 $29.83 5,604,102 D P
13 Jan, 2026 Snehal Patel Common Stock A 1,800 $29.83 5,604,102 D P
12 Jan, 2026 Snehal Patel Common Stock A 2,900 $27.54 5,602,302 D P
12 Jan, 2026 Snehal Patel Common Stock A 2,900 $27.54 5,602,302 D P
12 Jan, 2026 Snehal Patel Common Stock A 2,900 $27.54 5,602,302 D P
31 Dec, 2025 Snehal Patel Common Stock A 4,300 $21.36 5,599,402 D P
31 Dec, 2025 Snehal Patel Common Stock A 4,300 $21.36 5,599,402 D P
31 Dec, 2025 Snehal Patel Common Stock A 4,300 $21.36 5,599,402 D P
30 Dec, 2025 Snehal Patel Common Stock A 2,900 $21.73 5,595,102 D P
30 Dec, 2025 Snehal Patel Common Stock A 2,900 $21.73 5,595,102 D P
30 Dec, 2025 Snehal Patel Common Stock A 2,900 $21.73 5,595,102 D P
18 Dec, 2025 Snehal Patel Common Stock A 4,100 $12.62 5,592,202 D P
18 Dec, 2025 Snehal Patel Common Stock A 4,100 $12.62 5,592,202 D P
18 Dec, 2025 Snehal Patel Common Stock A 4,100 $12.62 5,592,202 D P
25 Nov, 2025 Snehal Patel Common Stock A 4,600 $8.37 5,588,102 D P
25 Nov, 2025 Snehal Patel Common Stock A 4,600 $8.37 5,588,102 D P
25 Nov, 2025 Snehal Patel Common Stock A 4,600 $8.37 5,588,102 D P
13 Nov, 2025 Snehal Patel Stock Options A 100,000 $0.00 2,347,462 D A
13 Nov, 2025 Snehal Patel Stock Options A 100,000 $0.00 2,347,462 D A