Sotera Health SHC Insider Ownership

NASDAQ SHC

$18.04 +0.40 (+2.27%)

As of: Oct 20, 2026 · 12:31 PM EDT

Insider Holdings by Owner

9.57Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

2.34%

▼-0.457% pp QoQ

Shares Held by Insiders

6.68Mn

filed for Sep 2026

▼-16.36% QoQ

Shares Outstanding

285.77Mn

285,773,000 shares

Direct Holdings

2.71Mn

Indirect: 3.97Mn

Net Shares Traded (QoQ)

-1.31Mn

net selling 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 5, 2026

Over the past 12 months, Sotera Health insiders sold $1.64 billion of stock on the open market (105.08Mn shares) and made no open-market purchases.

Behind Sotera Health's open-market sales in the past 12 months were 4 insiders, and no insider bought.
Warburg Pincus & Co. (Director and 10% owner) was the top open-market seller of Sotera Health over the past 12 months, with $959.25 million sold (61.82Mn shares) and the latest sale on May 13, 2026.
The newest open-market trade among Sotera Health insiders came on August 17, 2026, when Michael B. Petras Jr. (Executive Chairman) made a sale of 1.14Mn shares for $21.17 million.
Apart from open-market trades, SHC insiders received 939.37K shares in stock awards, acquired 139.01K shares through option exercises and conversions and gave up 305.11K shares to cover taxes or exercise prices in the past 12 months.
Business Quant data puts insider holdings in SHC at 6.68Mn shares across insiders' latest Form 4 filings, or 2.34% of the 285.77Mn shares outstanding; that total is down 16.36% from 7.98Mn shares at the end of Q2 2026 and down 93.98% from 110.91Mn shares at the end of Q3 2025.
Of the 6.68Mn shares held by Sotera Health insiders, 2.71Mn shares (40.56%) are held directly and 3.97Mn shares (59.44%) indirectly, through trusts, partnerships, family members and other entities.
SHC's insider total is spread across 17 insiders who have filed a Form 4 in the past two years.
SHC's largest insider holders by reported holdings are Michael B. Petras Jr. (Executive Chairman, 4.37Mn shares), Alton Shader (Chief Executive Officer, 579.57K shares) and Michael P. Rutz (President of Sterigenics, 334.28K shares).
Michael B. Petras Jr. alone accounts for 65.40% of the shares held by Sotera Health insiders.
Over the trailing 12 months, 17 insiders reported transactions in SHC stock across 32 Form 4 filings.
These insider figures for Sotera Health are based on Form 4 filings through August 19, 2026.

Form 4 Holdings

Insiders Holding SHC

Insiders 21

Shares held 9.57Mn

Of outstanding 3.35%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Michael B. Jr. Petras	Executive Chairman	397,912	3,969,393	4,367,305	45.6%	19 Aug, 2026
2	Michael P Rutz	President Of Sterigenics	1,265,033	0	1,265,033	13.2%	11 Aug, 2026
3	Alton Shader	Chief Executive Officer	955,512	0	955,512	10.0%	27 May, 2026
4	Scott J. Leffler	Cfo And Treasurer	738,649	0	738,649	7.7%	04 Mar, 2022
5	Alexander Dimitrief	Former Svp, Gc And Sec.	632,021	0	632,021	6.6%	02 Apr, 2026
6	Jonathan M. Lyons	Sr. Vice President, Cfo	629,480	0	629,480	6.6%	07 Aug, 2026
7	Ann R. Klee	Director	140,926	0	140,926	1.5%	27 May, 2026
8	Ruoxi Chen	Director	95,751	0	95,751	1.0%	27 May, 2026
9	Vincent K Petrella	Director	95,751	0	95,751	1.0%	27 May, 2026
10	James Neary	Director	95,751	0	95,751	1.0%	27 May, 2026
11	Sean Laurence Cunningham	Director	95,751	0	95,751	1.0%	27 May, 2026
12	David E. Wheadon	Director	89,882	0	89,882	0.9%	27 May, 2026
13	Constantine S Mihas	Director	80,781	0	80,781	0.8%	27 May, 2025
14	David Donnini	Director	61,649	0	61,649	0.6%	29 May, 2024
15	Robert Brown Knauss	Director	54,933	0	54,933	0.6%	27 May, 2025
16	Karen Flynn	Director	54,191	0	54,191	0.6%	27 May, 2026
17	Christopher Simon,	Director	34,102	0	34,102	0.4%	27 May, 2026
18	Terry Hammons	Svp, Gc And Secretary	31,257	0	31,257	0.3%	04 Mar, 2022
19	Stephanie Geveda	Director	25,848	0	25,848	0.3%	31 May, 2022
20	Kenneth D. Krause	Director	14,970	0	14,970	0.2%	27 May, 2026
21	Richard G Kyle	Director	14,970	0	14,970	0.2%	27 May, 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

209 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
17 Aug, 2026	Michael B. Jr. Petras	Executive Chairman	Disposed S	294,515	$18.50	$5.45Mn	397,912	Direct
17 Aug, 2026	Michael B. Jr. Petras	Executive Chairman	Disposed S	850,000	$18.50	$15.73Mn	3,969,393	Indirect
07 Aug, 2026	Michael P Rutz	President Of Sterigenics	Disposed S	150,000	$18.84	$2.83Mn	334,279	Direct
05 Aug, 2026	Jonathan M. Lyons	Sr. Vice President, Cfo	Disposed F	11,316	$17.98	$203.46K	217,304	Direct
22 May, 2026	Kenneth D. Krause	Director	Acquired A	14,970	$0.00	$0	14,970	Direct
22 May, 2026	James Neary	Director	Acquired A	14,970	$0.00	$0	95,751	Direct
22 May, 2026	Vincent K Petrella	Director	Acquired A	14,970	$0.00	$0	95,751	Direct
22 May, 2026	David E. Wheadon	Director	Acquired A	14,970	$0.00	$0	89,882	Direct
22 May, 2026	Karen Flynn	Director	Acquired A	14,970	$0.00	$0	54,191	Direct
22 May, 2026	Ann R. Klee	Director	Acquired A	14,970	$0.00	$0	140,926	Direct
26 May, 2026	Alton Shader	Chief Executive Officer	Acquired A	375,939	$0.00	$0	375,939	Direct
22 May, 2026	Ruoxi Chen	Director	Acquired A	14,970	$0.00	$0	95,751	Direct
22 May, 2026	Sean Laurence Cunningham	Director	Acquired A	14,970	$0.00	$0	95,751	Direct
22 May, 2026	Richard G Kyle	Director	Acquired A	14,970	$0.00	$0	14,970	Direct
22 May, 2026	Christopher Simon,	Director	Acquired A	14,970	$0.00	$0	34,102	Direct
26 May, 2026	Alton Shader	Chief Executive Officer	Acquired A	203,634	$0.00	$0	579,573	Direct
26 May, 2026	Alton Shader	Chief Executive Officer	Acquired A	101,817	$0.00	$0	101,817	Direct
13 May, 2026	Investment Xi Llc Gtcr	Director, TenPercentOwner	Disposed S	12,735,301	$15.17	$193.17Mn	0	Indirect
13 May, 2026	Pincus Co. Warburg	Director, TenPercentOwner	Disposed S	19,102,952	$15.17	$289.75Mn	0	Indirect
13 May, 2026	Pincus Co. Warburg	Director, TenPercentOwner	Disposed S	19,102,952	$15.17	$289.75Mn	0	Indirect

Showing 1 to 20 of 209 transactions