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TX-PBM-0002Full contract

Contractual Agreement, Pharmacy Benefits Management Services (HealthSelect of Texas)

Employees Retirement System of Texas·Express Scripts, Inc.

44.4/100ConcernBand 40 to 54 of 100Scored weight 81/10019 weight excluded as unclear or redacted
Rubric v2
Term Dec 7, 2022 → Dec 31, 2029Pricing exhibits omitted from the postingRetrieved Sep 4, 2026
Gag clause flagged. 19 of 100 weight is excluded as unclear or redacted. Scoring notes

Clause-by-clause evidence

FID · Weight 7 of 100

Fiduciary duty and loyalty

Weaker than the model
From the published record
PBM agrees to act as a fiduciary by acting in good faith, with candor and due diligence in connection with the performance of the Contract and any negotiations related thereto.

Why this verdict

All five models reached this verdict. Section 2.3 has Express Scripts agree to act as a fiduciary in good faith with candor and due diligence, and section 5.4(b) on page 7 adds a warranty of utmost good faith, loyalty, candor and skill. That is an express fiduciary undertaking, which is rare in pharmacy benefit contracts, but the duty is framed around performance of the contract rather than loyalty owed solely to the plan and its members. There is no duty to disclose every form of direct and indirect compensation and no disgorgement remedy for value retained in breach, so the clause is weaker than the model contract published by Mark Cuban and collaborators.

Compare with the model contract · § Section 2.4

The PBM owes duties of loyalty and care solely to the plan and its members, must disclose all direct and indirect compensation and every economic conflict, and must disgorge anything retained in breach without the plan proving damages.

Without a loyalty duty the PBM is free to put its own affiliates and revenue ahead of the plan when it exercises discretion over formularies, networks and pricing.

Independent council readings 5 published readings

Only readings under the score’s rubric version are shown here. Model confidence and agreement do not establish legal correctness.

Claude Opus 5Weaker than the model

The agreement contains an express fiduciary undertaking, which is unusual for a pharmacy benefit manager, and section 5.4(b) on page 7 adds duties of utmost good faith, loyalty, candor and skill. The duty is framed around good faith performance of the contract rather than loyalty owed solely to the plan and its members. There is no requirement to disclose every form of direct and indirect compensation as part of that duty and no disgorgement remedy for value retained in breach. The model contract published by Mark Cuban and collaborators ties the fiduciary standard to sole loyalty and to giving back retained amounts, so this falls short of that standard.

PBM agrees to act as a fiduciary by acting in good faith, with candor and due diligence in connection with the performance of the Contract and any negotiations related thereto.
Page 2 · Rubric v2
Gemini 3.1 ProWeaker than the model

The agreement states that the PBM will act as a fiduciary and perform its duties with good faith and loyalty. However, it does not mandate that these duties are owed solely to the plan and its members, nor does it include a provision for disgorgement of retained amounts.

PBM warrants and represents that it shall perform its obligations and duties under this Contract with utmost good faith, loyalty, candor and skill.
Page 7 · Rubric v2
GPT 5.6 SolWeaker than the model

The agreement expressly makes the PBM a fiduciary and separately requires loyalty, candor, skill, and good faith. It does not state that duties run solely to the plan and members, require disclosure of all direct and indirect compensation, or expressly provide disgorgement and participant enforcement.

PBM agrees to act as a fiduciary by acting in good faith, with candor and due diligence in connection with the performance of the Contract and any negotiations related thereto.
Page 2 · Rubric v2
Grok 4.6Weaker than the model

Express Scripts agrees to act as a fiduciary, and later warrants utmost good faith, loyalty, candor and skill. That is more than silence, but it is not the duty of loyalty and care owed solely to the plan and members in the model contract published by Mark Cuban and collaborators. There is no duty to disclose every economic conflict or to disgorge amounts retained in breach without ERS proving damages.

PBM agrees to act as a fiduciary by acting in good faith, with candor and due diligence in connection with the performance of the Contract and any negotiations related thereto.
Page 2 · Rubric v2
Kimi K3Weaker than the model

The contract does use the word fiduciary, and Section 5.4(b) adds that the PBM will perform with utmost good faith, loyalty, candor and skill. But the model contract published by Mark Cuban and collaborators requires duties of loyalty and care owed solely to the plan and its members, disclosure of all direct and indirect compensation and conflicts, and disgorgement of anything retained in breach without the plan proving damages. None of those mechanics appear. What ERS got is a general good faith standard, not an enforceable loyalty duty with teeth.

PBM agrees to act as a fiduciary by acting in good faith, with candor and due diligence in connection with the performance of the Contract and any negotiations related thereto.
Page 2 · Rubric v2
Finding provenance
Finding ID
6cc981df-1611-4bf3-bc38-81fd2b3548bd
Reviewed
Sep 30, 2026
Reviewer
owner
Recorded confidence
0.95
Model votes
Kimi K3: partial; Grok 4.6: partial; GPT 5.6 Sol: partial; Claude Opus 5: partial; Gemini 3.1 Pro: partial
Published reports 3 write-ups

Published Sep 30, 2026

Good news, bad news: the short version

Good news

The Employees Retirement System of Texas can walk away. Section 2.4 lets ERS end the Express Scripts contract without cause on ninety days written notice (page 2), with no termination fee anywhere in the documents, a pro rata refund of prepaid fees within two business days (page 6), and rebates that keep flowing until ERS has received everything owed (page 5). The five model council rated that clause good, and it is the strongest lever in the file.

Nothing changes without a signature. The contract may be amended only by a written agreement executed by both parties (page 2), and the Fee Schedule is held fixed for the term absent mutual written agreement (page 4). Both amendments and the supplement in this record were in fact signed by both sides.

The audit right is broad. ERS has an absolute right to audit Express Scripts, including the vendor's contracts with pharmaceutical manufacturers (page 18), and audit costs shift to the vendor when errors exceed $50,000 (page 18). Rebates are defined widely, reaching price protection dollars, price concessions and any other remuneration from manufacturers (page 5), and they must be paid over at least quarterly (page 5). Express Scripts agrees to act as a fiduciary (page 2), which most PBM contracts never say. Liquidated damages of up to $10,000.00 per default or per day are available without proving harm (page 12), and no work may be performed outside the United States (page 30).

Bad news

Almost every dollar term is somewhere else. Section 4.1(a) puts the reimbursement schedule and every fee in Exhibit D (page 4), and Exhibit D is a single cover sheet (page 39). Whether Express Scripts keeps a spread between what ERS pays and what pharmacies receive, whether its own Accredo specialty pharmacy (page 4) is paid at acquisition cost, and what the specialty rates are cannot be read. Four rubric items worth 19 of 100 weight points were marked unclear for that reason.

The rebate promise leans on that same missing exhibit. All Rebates are paid as set forth in Exhibit D and at the rate described in the Fee Schedule (page 5), so the text does not itself establish one hundred percent pass through, and the definition only reaches money received under a manufacturer contract for formulary drugs (page 6). Revenue collected by a related purchasing entity sits outside it, and an affiliate named MATRIX GPO, LLC appears on the insurance pages (page 56).

Four protections in the model contract published by Mark Cuban and collaborators are simply absent: no benchmark ceiling on any claim, no protection when a cash price is cheaper than the plan price, no lowest net cost standard for the formulary, and no pass through of group purchasing revenue. ERS must approve formulary changes, but the contract lists manufacturer rebate arrangements as an accepted reason to make them (page 5).

The gag flag is set. ERS' own auditors and consultants may use vendor materials only under a non disclosure agreement with Express Scripts, and the vendor may label material confidential and argue against release to the Attorney General (page 15). The service addendum is stamped Confidential Information and its per member fee is redacted (Service addendum, page 5).

What we could not see

Exhibits B through E, the proposal, clarifications, Fee Schedule and Performance Guarantees, are cover sheets only (pages 37 to 40). Amendment 2 page 4, the restated performance guarantees, is fully redacted. The service addendum fee is blanked (Service addendum, page 5). The council could not score pricing, spread, specialty or performance guarantees, and those are the items that decide what taxpayers pay.

The number

The reconciled score is 44.4 out of 100, grade Concern, computed from 81 scored weight points with 19 excluded as unclear: 4 points good, 64 points partial counted at half, 13 points missing, so (4 + 32) divided by 81. The five seats' own scores ran from 36.4 to 48.1. A strong exit right and a wide audit clause are not enough to make up for a contract whose prices are not on the page.

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The reference is the open source PBM contract published by Mark Cuban and collaborators, version 3.5. BetterBuy Rx did not write it and is not affiliated with or endorsed by its authors. Read the original model contract.

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