500+ models, valuations and deals.One advisor.
Big 4 trained, working directly with founders and investors from seed to mid-market M&A. Every model, every valuation, every email: same person.

Free Strategy Call
20 minutes with GabrielBring a deal, a fundraise, or a decision. Walk away with a clearer next step. Real time with Gabriel: no sales rep, no deck, no obligation.
Trusted by 500+ growth-driven startups and small businesses
The Stakes are High. You Shouldn't Walk Alone.
A transaction is won or lost in the preparation. Selling, buying, raising, or running the numbers every month: pick the engagement that matches your situation. The standard of work is the same in all five.
Financial Modeling Services
For fundraises and decisionsThree-statement models built on Leontief's Input-Output method. Investor-ready, diligence-ready, from $1,499.
Explore the engagementFractional CFO & FP&A Services
For founders without a CFOOutsourced finance function: budgeting, forecasting, monthly board packs, KPI dashboards, cash flow management. From $1,499/mo.
Explore the engagementBusiness Valuation Services
For fundraises, M&A and buyoutsIndependent company valuations using DCF, comparable companies, precedent transactions and asset-based methods, cross-checked into one range.
Explore the engagementSell-Side M&A Advisory
For founders ready to exitEnd-to-end exit advisory: valuation, CIM, buyer outreach, due-diligence defense. Exit, succession and restructuring mandates.
Explore the engagementBuy-Side M&A Advisory
For acquirers and investorsTarget screening, Quality of Earnings, synergy modeling, SPA risk allocation. Distressed and off-market deals covered. Find the truth before you sign.
Explore the engagementGabriel I. Simion
You work directly with meFounder of Simion Advisory Partners. Every engagement is delivered by Gabriel personally, never handed to a junior analyst. 500+ financial models, valuations and transaction documents delivered to founders, boards and counter-parties.
- 500+ models, valuations and transaction documents delivered
- Engagements from seed-stage to mid-market M&A
- Cross-sector: energy, tech, services, industrials
- Built on the Leontief Input-Output framework
Client Testimonials
Anonymized reviews from clients across financial modeling, M&A, and strategic advisory engagements. Identities protected by NDA.
Free Model Review
No strings attachedSend Gabriel your existing model. He'll review the assumptions, structure, and outputs, and reply with the three changes that matter most.
Three-statement models, built on the Leontief Method
The Modeling FrameworkEvery model Simion Advisory ships is built on the Input-Output framework developed by Dr. Wassily Leontief, the structural approach that won the 1973 Nobel Prize in Economics.
Drivers in. Three linked statements out. Move one assumption and the entire model updates: investor-ready scenario testing, not a static spreadsheet.
Financial models for investment rounds
Investors will test your numbers before they trust your plan. If you are moving fast and need a professional financial model or an updated forecast, a high-precision version ships in just a few days.
Prices start at $1,499 and adjust to your company stage and data complexity. Configure your financial model below.
Financial model configurator. Starting from $1,499
Step 1: Select the Investment Stage
Tell Gabriel about your situation.
One short message. Gabriel personally replies within one business day. No automated funnels, no sales rep.
17 Virtutii Street, Sector 6, 060782 Bucharest, ROMANIA
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Just three things and you're done. Gabriel reads every reply personally.





