Revelation Biosciences REVB Insider Ownership

NASDAQ REVB

$3.75 +0.46 (+14.15%)

As of: Oct 20, 2026 · 3:59 PM EDT

Insider Holdings by Owner

856.75K Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

24.45%

▲+13.10% pp QoQ

Shares Held by Insiders

955.66K

filed for Sep 2026

▲+115.49% QoQ

Shares Outstanding

3.91Mn

3,908,420 shares

Direct Holdings

556.59K

Indirect: 399.07K

Net Shares Traded (QoQ)

+512.18K

net buying in Sep 2026

Insiders Holding Shares

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

Updated Oct 10, 2026

In the last 12 months, insiders at Revelation Biosciences neither bought nor sold shares on the open market.

Outside the open market, Revelation Biosciences insiders received 810.61K shares in stock awards, gave up 50.53K shares to cover taxes or exercise prices and gave away 208.07K shares as gifts over the past 12 months.
According to Business Quant data, insiders at Revelation Biosciences reported 955.66K shares in total in their latest Form 4 filings, or 24.45% of the 3.91Mn shares outstanding; that total is up 115.49% from 443.48K shares at the end of Q2 2026.
Revelation Biosciences insiders hold 556.59K shares directly (58.24% of their total) and 399.07K shares (41.76%) indirectly, through entities such as trusts and partnerships.
The insider holdings in Revelation Biosciences belong to 6 insiders who have reported on Form 4 within the past two years.
REVB's largest insider holders by reported holdings are James Rolke (Chief Executive Officer, 422.81K shares), Chester Stanley Zygmont III (Chief Financial Officer, 399.05K shares) and Jess Roper (Director, 44.84K shares).
The holding of James Rolke makes up 44.24% of all shares held by Revelation Biosciences insiders.
In the last 12 months, 22 Form 4 filings with transactions in REVB stock came from 5 insiders.
The insider holdings and trades above for Revelation Biosciences reflect Form 4 filings through August 18, 2026.

Form 4 Holdings

Insiders Holding REVB

Insiders 6

Shares held 856.75K

Of outstanding 21.92%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	James Rolke	Chief Executive Officer	422,814	0	422,814	49.4%	18 Aug, 2026
2	Chester Stanley Iii Zygmont	Chief Financial Officer	0	300,136	300,136	35.0%	18 Aug, 2026
3	Jess Roper	Director	44,839	0	44,839	5.2%	18 Aug, 2026
4	Jennifer Carver	Director	44,769	0	44,769	5.2%	18 Aug, 2026
5	Lakhmir S Chawla	Director	44,169	0	44,169	5.2%	18 Aug, 2026
6	George F Tidmarsh	Director	0	22	22	0.0%	13 Feb, 2025

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

64 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
17 Aug, 2026	Jennifer Carver	Director	Acquired A	32,011	$0.00	$0	44,769	Direct
17 Aug, 2026	Lakhmir S Chawla	Director	Acquired A	32,011	$0.00	$0	44,169	Direct
17 Aug, 2026	James Rolke	Chief Executive Officer	Acquired A	208,076	$0.00	$0	422,814	Direct
17 Aug, 2026	Jess Roper	Director	Acquired A	32,011	$0.00	$0	44,839	Direct
17 Aug, 2026	Chester Stanley Iii Zygmont	Chief Financial Officer	Acquired A	208,073	$0.00	$0	208,073	Direct
17 Aug, 2026	Chester Stanley Iii Zygmont	Chief Financial Officer	Disposed G	208,073	$0.00	$0	0	Direct
17 Aug, 2026	Chester Stanley Iii Zygmont	Chief Financial Officer	Acquired G	208,073	$0.00	$0	300,136	Indirect
30 Apr, 2026	Chester Stanley Iii Zygmont	Chief Financial Officer	Disposed F	13,285	$1.10	$14.61K	92,063	Indirect
30 Apr, 2026	James Rolke	Chief Executive Officer	Disposed F	10,115	$1.13	$11.43K	214,738	Direct
03 Feb, 2026	James Rolke	Chief Executive Officer	Disposed F	8,521	$1.86	$15.85K	224,853	Direct
03 Feb, 2026	Jess Roper	Director	Disposed F	1,591	$1.85	$2.94K	12,828	Direct
03 Feb, 2026	Lakhmir S Chawla	Director	Disposed F	2,261	$1.85	$4.18K	12,158	Direct
03 Feb, 2026	Jennifer Carver	Director	Disposed F	1,661	$1.87	$3.11K	12,758	Direct
04 Feb, 2026	Chester Stanley Iii Zygmont	Chief Financial Officer	Disposed F	13,100	$1.65	$21.62K	105,348	Indirect
08 Jan, 2026	Lakhmir S Chawla	Director	Acquired A	41,981	$3.60	$151.13K	14,417	Direct
08 Jan, 2026	Jess Roper	Director	Acquired A	41,981	$3.60	$151.13K	14,417	Direct
08 Jan, 2026	James Rolke	Chief Executive Officer	Acquired A	532,829	$3.60	$1.92Mn	233,372	Direct
08 Jan, 2026	Jennifer Carver	Director	Acquired A	41,981	$3.60	$151.13K	14,417	Direct
08 Jan, 2026	Chester Stanley Iii Zygmont	Chief Financial Officer	Acquired A	78,145	$3.60	$281.32K	118,448	Indirect
29 Oct, 2025	Chester Stanley Iii Zygmont	Chief Financial Officer	Acquired A	390,614	$5.12	$2.00Mn	98,911	Indirect

Showing 1 to 20 of 64 transactions