Engineering thenext epochof the deal.
The Marsec Group is a boutique M&A advisory firm engineering outcomes for founders, boards, and institutional capital across the middle market.
A full-spectrum advisory practice.
Four disciplines, one standard of execution. We deploy institutional rigor with the agility of a principal.
Sell-Side Advisory
We architect competitive processes that maximize enterprise value and control every variable from teaser to close.
- Valuation & positioning
- Buyer universe mapping
- Auction management
Buy-Side Advisory
Disciplined origination and diligence for acquirers pursuing accretive, thesis-driven growth through acquisition.
- Target sourcing
- Diligence orchestration
- Deal structuring
Capital Advisory
Access to institutional debt and equity. We engineer capital structures that fuel the next epoch of expansion.
- Growth equity
- Structured debt
- Recapitalizations
Strategic Value Creation
Pre-transaction preparation and board-level counsel that compounds value long before a term sheet exists.
- Exit readiness
- Operational levers
- Board advisory
Selected transactions.
A representative sample of mandates closed across sectors and cycles.
LNG / EnergyLease negotiations with a major port authority for an LNG liquefaction facility.
PetrochemicalsLease negotiations for an ethane cracker complex.
Ports & LogisticsSale of a marine container terminal operator.
Energy InfrastructureDevelopment and financing of a crude oil export terminal.
Ports & LogisticsPublic-private partnership for a marine container terminal.
We are not intermediaries. We are principals in your outcome.
Conviction over consensus.
We do not chase volume. Every mandate is a conviction — pursued with the intensity of a principal, not the detachment of a broker.
The details are the deal.
Value leaks in the margins. We obsess over structure, sequencing, and negotiation dynamics that lesser advisors overlook.
Relationships outlast transactions.
A close is a milestone, not an endpoint. We steward founders and boards across cycles, not single events.
Senior attention, every mandate.
No juniors running your deal. Your engagement is led personally, from first call to final close.
Sean Strawbridge
Sean Strawbridge founded The Marsec Group to bring principal-grade conviction to middle-market M&A. Across decades of executive leadership in infrastructure, energy, and capital-intensive industries, he has built a reputation for engineering outcomes where others see obstacles.
He leads every mandate personally — from first conversation to final close — pairing institutional rigor with the agility and discretion that founders and boards demand.
Let's discuss your next move.
Whether you are contemplating a sale, an acquisition, or a capital raise, every conversation is confidential and without obligation.