--- title: Certification Class by Green Cabbage --- [![Green Cabbage Website](https://info.green-cabbage.com/hs-fs/hubfs/stack.jpg?width=200&height=81&name=stack.jpg "Green Cabbage Website")](https://www.green-cabbage.com/) Open main menu Close main menu - Home - Products - Pricing - Blog - Company No Cost Class Preview, 30-Minutes Live Training [Request preview](https://info.green-cabbage.com/certification-class#preview) Green Cabbage certification classes Become a Certified Deal Negotiator Counter supplier strategies, sharpen deal messaging, and run complex deals with control. Earn your certificate and **8 hours of continuing education credit** that can be applied toward certifications such as CPSM, ISM, and other procurement credentials.  [View classes](https://info.green-cabbage.com/certification-class#classes) [Lead Instructor](https://info.green-cabbage.com/certification-class#preview) How it runs   5 consecutive days per class Designed for cadence, repetition, and muscle memory.   12:30 pm to 2:00 pm ET Easy to protect on deal-team calendars.   $1,295 per person, per class. [Contact us](mailto:Widya.hoberek@green-cabbage.com) for group pricing or a dedicated session tailored to your organization. Choose your class Quarterly schedules are listed on each card below. ![Class 1](https://images.unsplash.com/photo-1521737604893-d14cc237f11d?auto=format&fit=crop&w=1600&q=80) Negotiation Master Class 1 Implementing the Deal Leverage Management Process Build a repeatable leverage model and information strategy before renewal discussions begin. [Class 1 Details](https://info.green-cabbage.com/certification-class-1-by-green-cabbage) Quarterly schedule  **Monday - Friday, 12:30pm to 2:00pm** **ET**   Jul Week of Jul 13 - 17, 2026 Oct Week of Oct 12 - 16, 2026 ![Class 2](https://images.unsplash.com/photo-1556761175-129418cb2dfe?auto=format&fit=crop&w=1600&q=80) Negotiation Master Class 2 Countering Supplier Sales Strategies and Effective Deal Messaging Neutralize supplier narratives and align stakeholders with messaging that holds under pressure. [Class 2 Details](https://info.green-cabbage.com/certificationclass2) Quarterly schedule  **Monday - Friday, 12:30pm to 2:00pm** ET  Aug Week of Aug 17 - 21, 2026 Nov Week of Nov 9 - 13, 2026 ![Class 3](https://images.unsplash.com/photo-1552664730-d307ca884978?auto=format&fit=crop&w=1600&q=80) Negotiation Master Class 3 Leading Complex Deal Negotiations Run complex deals with cadence, decision control, and clean accountability across teams. [Class 3 Details](https://info.green-cabbage.com/certification-class-3-by-green-cabbage) Quarterly schedule Monday - Friday, 12:30pm to 2:00pm ET Sep Week of Sep 14 - 18, 2026 Dec Week of Dec 7 - 11, 2026 Request a 30-minute live preview  Join our monthly Class Preview at No-Cost, a live session led by a subject matter expert designed to give you a clear snapshot of our certification class approach and value. What you get Live preview, sample materials, and recommended attendee roles based on your deal profile. [Book preview](https://info.green-cabbage.com/training-registration?previous_page=certification%20class%20series) [Back to classes](https://info.green-cabbage.com/certification-class#classes)  ## Learn from an expert practitioner Practical instruction, built from real supplier and buyer-side negotiation experience. ![Andrew Ozlowski](https://info.green-cabbage.com/hs-fs/hubfs/Andrew%20O..png?width=88&height=88&name=Andrew%20O..png) Andrew Ozlowski CSO, Green Cabbage Inc. View LinkedIn → ✓20+ years in procurement and negotiations ✓Led enterprise supplier negotiations and risk reviews ✓Supplier-side industry practitioner Andrew graduated from With 20-year career in complex information technology solution sales and consulting with companies including SAP, Computer Associates, Kronos, and Accenture. Andrew combines supplier-side and buyer-side experience to teach teams how to control the negotiation process and drive better outcomes. "The goal is to communicate leverage clearly enough that the supplier changes their behavior." [Follow us on LinkedIn](https://www.linkedin.com/company/greencabbageinc)