Adma Biologics ADMA Insider Ownership

NASDAQ ADMA

$12.79 +0.06 (+0.47%)

At close: Nov 9, 2026 · 4:00 PM EST

Insider Holdings by Owner

6.77Mn Shares

Adam S Grossman2.07Mn30.6%

Steve Elms2.05Mn30.2%

Brian Lenz703.00K10.4%

Jerrold B Grossman520.28K7.7%

Kaitlin M. Kestenberg-Messina443.06K6.5%

Other insiders (8)982.37K14.5%

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

3.54%

▲+0.132% pp QoQ

Shares Held by Insiders

7.93Mn

filed for Sep 2026

▲+1.80% QoQ

Shares Outstanding

223.70Mn

223,695,193 shares

Direct Holdings

3.99Mn

Indirect: 3.94Mn

Net Open-Market Trades

no open-market trades 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 —

Open-Market Insider Trades

Bought Sold

Latest quarter —

Net over range —

Net-buying quarters —

Insider Ownership Summary

Updated Oct 27, 2026

In the last 12 months, insiders at Adma Biologics made open-market purchases of $468,294 (45.4K shares) and open-market sales of $1.57 million (94.1K shares).

A count shows 2 insiders buying ADMA stock on the open market over the past 12 months and 2 insiders selling.
Among Adma Biologics' insiders, Jerrold B. Grossman (Director) was the largest open-market buyer over the past 12 months, purchasing $250,874 of stock (31.4K shares), most recently on May 27, 2026.
Conversely, Adam S. Grossman (President and CEO) was ADMA's largest open-market seller in the past 12 months, with $1.41 million of sales (84K shares); the latest was on March 16, 2026.
In transactions other than open-market trades, Adma Biologics insiders received 469.98K shares in stock awards, acquired 100.1K shares through option exercises and conversions, gave up 218.07K shares to cover taxes or exercise prices and gave away 30K shares as gifts over the past 12 months.
Business Quant data puts insider holdings in ADMA at 7.93Mn shares across insiders' latest Form 4 filings, up 1.80% from 7.79Mn shares at the end of Q2 2026.
Of the 7.93Mn shares held by Adma Biologics insiders, 3.99Mn shares (50.27%) are held directly and 3.94Mn shares (49.73%) indirectly, through trusts, partnerships, family members and other entities.
Business Quant counts 10 insiders with holdings in Adma Biologics stock, among the officers, directors and 10% owners who have filed a Form 4 in the past two years.
Adma Biologics' top three insider holders by shares held are Adam S. Grossman (President and CEO, 3.84Mn shares), Steve Elms (Director, 2.14Mn shares) and Jerrold B. Grossman (Director, 612.99K shares).
Adam S. Grossman alone accounts for 48.39% of the shares held by Adma Biologics insiders.
Institutions held 89.04% of Adma Biologics' outstanding shares in their Q2 2026 13F filings, insiders about 3.47% based on their latest Form 4 filings, and other investors, including the public, the remaining 7.49%.
Over the trailing 12 months, 10 insiders reported transactions in ADMA stock across 26 Form 4 filings.
These insider figures for Adma Biologics are based on Form 4 filings through July 28, 2026.

Form 4 Holdings

Insiders Holding ADMA

Insiders 13

Shares held 6.77Mn

Of outstanding 3.02%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Adam S Grossman	President And Ceo	2,070,777	0	2,070,777	30.6%	05 Nov, 2026
2	Steve Elms	Director	0	2,045,730	2,045,730	30.2%	09 Mar, 2026
3	Brian Lenz	Evp, Cfo	703,002	0	703,002	10.4%	08 Mar, 2024
4	Jerrold B Grossman	Director	520,284	0	520,284	7.7%	28 May, 2026
5	Kaitlin M. Kestenberg-Messina	Coo And Svp, Compliance	443,061	0	443,061	6.5%	28 Jul, 2026
6	Young Kwon	Director	263,020	0	263,020	3.9%	11 Feb, 2026
7	Brad L. Tade	Cfo And Treasurer	232,940	0	232,940	3.4%	23 Feb, 2026
8	Terry Kohler	Cfo And Treasurer	143,149	0	143,149	2.1%	17 Jul, 2026
9	Lawrence P. Guiheen	Director	105,520	30,000	135,520	2.0%	17 Mar, 2026
10	Bryant Fong	Director	83,941	0	83,941	1.2%	28 Feb, 2024
11	Martha J Demski	Director	0	56,601	56,601	0.8%	08 Mar, 2023
12	Alison Cecily Finger	Director	45,619	0	45,619	0.7%	11 Feb, 2026
13	Eduardo Rene Salas	Director	21,579	0	21,579	0.3%	11 Feb, 2026

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

615 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
05 Nov, 2026	Adam S Grossman	President And Ceo	Acquired M	105,000	$5.40	$567.00K	2,217,777	Direct
05 Nov, 2026	Adam S Grossman	President And Ceo	Disposed S	105,000	$12.00	$1.26Mn	2,112,777	Direct
05 Nov, 2026	Adam S Grossman	President And Ceo	Disposed S	42,000	$12.00	$504.00K	2,070,777	Direct
05 Nov, 2026	Adam S Grossman	President And Ceo	Disposed M	105,000	$0.00	$0	585,950	Direct
24 Jul, 2026	Kaitlin M. Kestenberg-Messina	Coo And Svp, Compliance	Disposed F	3,177	$8.37	$26.59K	443,061	Direct
16 Jul, 2026	Terry Kohler	Cfo And Treasurer	Acquired A	85,130	$0.00	$0	143,149	Direct
16 Jul, 2026	Terry Kohler	Cfo And Treasurer	Acquired A	136,363	$0.00	$0	136,363	Direct
27 May, 2026	Jerrold B Grossman	Director	Acquired P	6,400	$7.91	$50.62K	520,284	Direct
12 May, 2026	Jerrold B Grossman	Director	Acquired P	12,500	$8.01	$100.13K	513,884	Direct
11 May, 2026	Jerrold B Grossman	Director	Acquired P	12,500	$8.01	$100.13K	501,384	Direct
01 Apr, 2026	Kaitlin M. Kestenberg-Messina	Coo And Svp, Compliance	Disposed F	20,362	$9.11	$185.50K	446,238	Direct
16 Mar, 2026	Adam S Grossman	President And Ceo	Acquired M	15,000	$5.40	$81.00K	2,133,777	Direct
13 Mar, 2026	Lawrence P. Guiheen	Director	Acquired M	30,000	$3.66	$109.80K	135,520	Direct
17 Mar, 2026	Lawrence P. Guiheen	Director	Disposed G	30,000	$0.00	$0	105,520	Direct
16 Mar, 2026	Adam S Grossman	President And Ceo	Disposed S	15,000	$15.16	$227.40K	2,118,777	Direct
17 Mar, 2026	Lawrence P. Guiheen	Director	Acquired G	30,000	$0.00	$0	30,000	Indirect
16 Mar, 2026	Adam S Grossman	President And Ceo	Disposed S	6,000	$15.16	$90.96K	2,112,777	Direct
13 Mar, 2026	Lawrence P. Guiheen	Director	Disposed M	30,000	$0.00	$0	23,837	Direct
16 Mar, 2026	Adam S Grossman	President And Ceo	Disposed M	15,000	$0.00	$0	690,950	Direct
06 Mar, 2026	Kaitlin M. Kestenberg-Messina	Coo And Svp, Compliance	Disposed F	10,059	$15.39	$154.81K	562,101	Direct

Showing 1 to 20 of 615 transactions