Greenwich LifeSciences GLSI Insider Ownership

NASDAQ GLSI
$15.84 +0.21 (+1.34%)
As of: Sep 4, 2026 · 3:55 PM EDT

Insider Holdings by Owner

6.98Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026
Insider Ownership
71.08%
▲+0.054% pp QoQ
Shares Held by Insiders
9.70Mn
filed for Sep 2026
▲+0.08% QoQ
Shares Outstanding
13.64Mn
13,641,384 shares
Direct Holdings
6.98Mn
Indirect: 2.71Mn
Net Shares Traded (QoQ)
+7.30K
net buying in Sep 2026
Insiders Holding Shares
5
with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding
Latest —
Average ownership —
Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold
Latest quarter —
Net over range —
Buying quarters —

Insider Ownership Summary

Quarter ending 30 Sep, 2026

As of August 29, 2026, the three largest insider holders of GLSI are Snehal Patel (Ceo And Cfo, 5.61Mn shares), Snehal Patel (Ceo And Cfo, 5.60Mn shares), Snehal Patel (Ceo And Cfo, 2.71Mn shares).

Form 4 Holdings

Insiders Holding GLSI

Insiders 5
Shares held 6.98Mn
Of outstanding 51.19%
# Insider Position Direct Indirect Total Share of Insiders Last Filed
1 Snehal Patel Ceo And Cfo 5,611,402 0 5,611,402 80.4% 30 Jul, 2026
2 David Mcwilliams Director 620,301 0 620,301 8.9% 15 Dec, 2021
3 Kenneth Hallock Director 397,304 0 397,304 5.7% 24 Jan, 2022
4 Jaye Thompson Vp Clinical Reg Affairs 264,148 0 264,148 3.8% 25 Nov, 2024
5 Frank Joseph Daugherty Chief Medical Officer 90,121 0 90,121 1.3% 26 Apr, 2022

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

694 Insider Transactions

Source SEC Form 4
Latest quarter Sep 2026
Download Data
Date Insider Position Transaction Shares Price Value Shares Held After Ownership
28 Jul, 2026 Snehal Patel Ceo And Cfo Acquired P 1,500 $13.59 $20.39K 5,610,702 Direct
29 Jul, 2026 Snehal Patel Ceo And Cfo Acquired P 700 $13.10 $9.17K 5,611,402 Direct
27 Jul, 2026 Snehal Patel Ceo And Cfo Acquired P 1,500 $13.62 $20.43K 5,609,202 Direct
23 Jul, 2026 Snehal Patel Ceo And Cfo Acquired P 2,500 $13.14 $32.85K 5,606,602 Direct
24 Jul, 2026 Snehal Patel Ceo And Cfo Acquired P 1,100 $12.88 $14.17K 5,607,702 Direct
13 Jan, 2026 Snehal Patel Ceo And Cfo Acquired P 1,800 $29.83 $53.69K 5,604,102 Direct
13 Jan, 2026 Snehal Patel Ceo And Cfo Acquired P 1,800 $29.83 $53.69K 5,604,102 Direct
13 Jan, 2026 Snehal Patel Ceo And Cfo Acquired P 1,800 $29.83 $53.69K 5,604,102 Direct
13 Jan, 2026 Snehal Patel Ceo And Cfo Acquired P 1,800 $29.83 $53.69K 5,604,102 Direct
12 Jan, 2026 Snehal Patel Ceo And Cfo Acquired P 2,900 $27.54 $79.87K 5,602,302 Direct
12 Jan, 2026 Snehal Patel Ceo And Cfo Acquired P 2,900 $27.54 $79.87K 5,602,302 Direct
12 Jan, 2026 Snehal Patel Ceo And Cfo Acquired P 2,900 $27.54 $79.87K 5,602,302 Direct
12 Jan, 2026 Snehal Patel Ceo And Cfo Acquired P 2,900 $27.54 $79.87K 5,602,302 Direct
31 Dec, 2025 Snehal Patel Ceo And Cfo Acquired P 4,300 $21.36 $91.85K 5,599,402 Direct
31 Dec, 2025 Snehal Patel Ceo And Cfo Acquired P 4,300 $21.36 $91.85K 5,599,402 Direct
31 Dec, 2025 Snehal Patel Ceo And Cfo Acquired P 4,300 $21.36 $91.85K 5,599,402 Direct
31 Dec, 2025 Snehal Patel Ceo And Cfo Acquired P 4,300 $21.36 $91.85K 5,599,402 Direct
30 Dec, 2025 Snehal Patel Ceo And Cfo Acquired P 2,900 $21.73 $63.02K 5,595,102 Direct
30 Dec, 2025 Snehal Patel Ceo And Cfo Acquired P 2,900 $21.73 $63.02K 5,595,102 Direct
30 Dec, 2025 Snehal Patel Ceo And Cfo Acquired P 2,900 $21.73 $63.02K 5,595,102 Direct