Kurt M. Roth v. Sotera Health Company

CourtCourt of Chancery of Delaware
DecidedMarch 26, 2026
Docket2022-1192-LWW
StatusPublished

This text of Kurt M. Roth v. Sotera Health Company (Kurt M. Roth v. Sotera Health Company) is published on Counsel Stack Legal Research, covering Court of Chancery of Delaware primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Kurt M. Roth v. Sotera Health Company, (Del. Ct. App. 2026).

Opinion

IN THE COURT OF CHANCERY OF THE STATE OF DELAWARE

KURT M. ROTH, ) ) Plaintiff, ) ) v. ) ) SOTERA HEALTH COMPANY, a ) C.A. No. 2022-1192-LWW Delaware corporation and SOTERA ) HEALTH LLC (f/k/a Sterigenics ) International, LLC), a Delaware limited ) liability company, ) ) Defendants. )

MEMORANDUM OPINION

Date Submitted: December 8, 2025 Date Decided: March 26, 2026

John M. Seaman, ABRAMS & BAYLISS LLP, Wilmington, Delaware; Matthew B. Goeller, K&L GATES LLP, Wilmington, Delaware; Ryan Q. Keech, K&L GATES LLP, Los Angeles, California; Carl Alan Roth, GORDON KEMPER ROTH LLP, Beverly Hills, California; Counsel for Plaintiff

John P. DiTomo, Lauren K. Neal, Alec F. Hoeschel, Jialu Zou, MORRIS, NICHOLS, ARSHT & TUNNELL LLP, Wilmington, Delaware; Counsel for Defendants

WILL, Vice Chancellor Plaintiff Kurt Roth, a former senior executive at Sotera Health, voluntarily

resigned in September 2022 under a contract that mandated the forfeiture of unvested

equity. The governing agreements state that Roth’s equity would vest only if

Sotera’s private equity sponsors—GTCR and Warburg Pincus—achieved a certain

return on their investments (i.e., “Sponsor Inflows” exceeding “Sponsor Outflows”

by 2.5x) before his departure. Now, he seeks to recover millions of dollars in

unvested performance-based equity on two legal theories.

Roth first attempts to satisfy the vesting threshold by classifying two

transactions as Sponsor Inflows: a $1.13 billion payout made in 2015 to a

predecessor GTCR fund, and a $397 million margin loan taken out by Warburg in

2021. The plain text of the agreements and economic realities of the transactions

preclude this conclusion. Because the 2.5x threshold was unmet when Roth

resigned, he cannot prove a breach of contract.

Roth alternatively claims the defendants breached the implied covenant of

good faith and fair dealing by artificially suppressing their returns—pursuing an

IPO, capping a secondary offering, and abandoning a block trade—and by

constructively terminating him. The trial record refutes this narrative. The timing

and structure of Sotera’s capital markets transactions were driven by macroeconomic

conditions and business decisions, not a bad-faith conspiracy to thwart vesting. As

1 for constructive termination, Roth left of his own volition and contractually forfeited

his unvested equity in doing so.

Finding no breach of contract or of the implied covenant of good faith and fair

dealing, judgment is entered in favor of the defendants.

I. BACKGROUND

The following facts were stipulated to by the parties or proven by a

preponderance of the evidence at trial.1

A. GTCR’s Initial Investment in Sotera

GTCR LLC is a Chicago-based private equity firm, which invests its clients’

monies through various limited partnerships generally referred to as “funds.”2 In

2006, GTCR created Fund IX.3

In 2011, GTCR Fund IX indirectly acquired STHI Holdings, Inc. (“SHI”), the

predecessor parent holding company to Sterigenics International, LLC

1 See Pre-trial Stipulation and Order (Dkt. 269) (“PTO”). Trial occurred over three days, during which seven fact and three expert witnesses testified. The trial record contains 790 joint exhibits, including 20 deposition transcripts. Trial testimony is cited as “[Name] Tr.” See July 7-9, 2025 Trial Trs. (Dkts. 280-82). Exhibits are cited by the numbers provided on the parties’ joint exhibit list as “JX __,” unless otherwise defined, and pincites are to the joint exhibit pagination. See Joint Ex. List (Dkt. 249). If joint exhibit pagination is unavailable, pin cites are to the last four digits of Bates stamps (shown as ‘----). Deposition transcripts are cited as “[Name] Dep.” See Notice of Lodging of Dep. Trs. (Dkt. 268). 2 See PTO ¶ 11; JX 2 at 9. 3 JX 590 at 1. 2 (“Sterigenics”), a provider of medical product sterilization and lab testing services.4

To facilitate the transaction, GTCR formed STHI Holding Corp. to purchase all of

SHI’s outstanding shares for $434.7 million.5 This newly created acquisition vehicle

sat at the bottom of a chain of wholly-owned subsidiaries, positioned directly

beneath STHI Intermediate Holding Corp.6

B. The Sale to Warburg

In May 2015, the New York-based private equity firm Warburg Pincus

purchased a majority interest in Sterigenics from GTCR Fund IX.7 To facilitate

Sterigenics’ recapitalization, a corporate holding structure was created with new

investors at the top. Sterigenics-Nordion Topco Parent LLC (“Topco Parent LLC”)

was formed, along with two wholly owned subsidiaries: Sterigenics-Nordion

Holdings Topco LLC (“Topco LLC”) and Sterigenics-Nordion Holdings, LLC

(“SNH LLC”).8 SNH LLC then entered into a recapitalization agreement with the

parent holding company (STHI Parent Company, LLC, or the “Predecessor Parent”)

to purchase SHI’s outstanding stock, integrating Sterigenics into the enterprise.9

4 JX 2 at 9; Rahe Dep. at 39; Cunningham Dep. at 13 (acknowledging Fund IX’s interest in the predecessor entity); Petras Tr. 147. 5 PTO ¶ 13. 6 JX 2 at 9. 7 JX 21 (“Topco Parent LLC Agreement”) 1 (Recitals). 8 Topco Parent LLC Agreement 1; see also PTO ¶ 13. 9 PTO ¶ 14; see also JX 3 at 7. 3 On May 15, 2015, a series of Warburg funds and a new series of GTCR funds

(i.e., the GTCR Fund XI complex) contributed approximately $792 million to Topco

Parent in exchange for membership units in that entity.10 The $792 million flowed

downstream from Topco Parent LLC to Topco LLC, and then to SNH LLC.11 Using

those funds together with financing from JP Morgan, SNH LLC paid the Predecessor

Parent approximately $1.13 billion to purchase SHI’s outstanding stock.12 As a

result of this transaction, which closed on May 15, 2015, the Predecessor Parent

divested itself of its interest in SHI.13

Also on May 15, Topco Parent and its members executed an Amended and

Restated Limited Liability Company Operating Agreement of Sterigenics-Nordion

Topco Parent, LLC (the “Topco Parent LLC Agreement”).14 The Topco Parent LLC

Agreement governed the terms and benefits of each class of the entity’s equity.15

C. Roth’s Hiring and Class B Units

In late 2015, plaintiff Kurt M. Roth was approached by GTCR and Warburg,

as well as Sterigenics’ then-CEO Michael Mulhern, about a job opportunity at

10 PTO ¶ 15; see also Topco Parent LLC Agreement 1 (Recitals). 11 PTO ¶ 14. 12 Id. 13 Id. ¶ 16; see also Topco Parent LLC Agreement 1. 14 PTO ¶15. 15 See infra notes 24-27 and accompanying text. 4 Sterigenics.16 Roth was, at the time, an investment banker at Baird.17 He understood

that his background would be useful to Sterigenics, which was looking to grow

through a targeted acquisition strategy.18

On November 9, 2015, Roth signed an offer letter, accepting a position as

Sterigenics’ Senior Vice President of Corporate Development and Strategy.19 On

February 24, 2016, he signed a Senior Management Agreement, which stated that

he was an at-will employee.20

Roth was awarded 4,512,393 Class B Units “in connection with [his]

employment.”21 A February 16 grant notice explained that the units would be split

into 75% B-1 Units (3,384,295) and 25% B-2 Units (1,128,098).22 The B-1 and B-2

Units would “vest in accordance with the terms set forth in Section 3.02(d) of the

[Topco Parent] LLC Agreement.”23

16 Roth Tr. 80. 17 Id. at 5-6. 18 Id. at 13-14. 19 JX 26. 20 JX 35 (“Senior Management Agreement”) § 1(c).

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