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Seller-Side Dataroom: Streamlining M&A Documentation
How Prismatic's dataroom module manages sell-side M&A documentation with a 36-item bilingual checklist, role-based access control, approval workflows, and audit trails.
Tomas Korcak (korczis)
Prismatic Platform
In sell-side M&A transactions, the quality of your dataroom determines the speed and success of the deal. A well-organized dataroom signals professionalism, reduces buyer due diligence cycles, and prevents last-minute surprises. Prismatic's dataroom module provides the tooling to manage this process.
The 36-Item Checklist
Every sell-side dataroom needs a standardized document inventory. Prismatic provides a 36-item bilingual (Czech/English) checklist organized by category:
|----------|-------|--------------|
Each item has a status: Not Started, In Progress, Ready for Review, Approved, or Not Applicable.
Document Approval Workflow
Documents progress through a state machine:
Not Started β In Progress β Ready for Review β Approved
β
ββββΊ Needs Revision β In Progress
State transitions require role-appropriate authorization:
defmodule PrismaticDD.Dataroom.ApprovalStateMachine do
def transition(:ready_for_review, :approved, %{role: :deal_lead}) do
{:ok, :approved}
end
def transition(:ready_for_review, :needs_revision, %{role: role})
when role in [:deal_lead, :reviewer] do
{:ok, :needs_revision}
end
def transition(_from, _to, _context) do
{:error, :unauthorized_transition}
end
end
Role-Based Access Control
The dataroom supports four roles with escalating privileges:
|------|------|--------|--------|---------|
External counsel sees only documents explicitly shared with them. Analysts can upload documents but cannot approve them. Reviewers can flag documents for revision. Deal leads have full authority.
Audit Trail
Every action in the dataroom is logged:
%AuditEntry{
action: :document_viewed,
user: "analyst@company.com",
document: "financial/audited-2025.pdf",
timestamp: ~U[2026-03-25 14:30:00Z],
metadata: %{ip: "10.0.1.50", duration_seconds: 120}
}
The audit trail provides:
This is essential for regulatory compliance and post-closing disputes.
Completeness Tracking
The dataroom dashboard shows real-time completeness metrics:
Completeness tracking helps deal teams identify documentation gaps before buyer DD begins.
Integration with DD Pipeline
The dataroom connects bidirectionally with Prismatic's DD capabilities:
Bilingual Support
Czech M&A transactions often involve international buyers. The checklist and interface support both Czech and English:
This eliminates the translation overhead that typically delays cross-border transactions.
LiveView Interface
The dataroom is accessible at /hub/dd/dataroom with five views:
2. Checklist -- full 36-item checklist with status and actions
3. Documents -- file browser with upload and versioning
4. Activity -- audit trail with filtering by user, document, and date
5. Settings -- role management and sharing configuration
All views update in real-time via LiveView -- when an analyst uploads a document, the deal lead sees the status change immediately.
Conclusion
A professional dataroom is table stakes for sell-side M&A. By combining a standardized checklist, role-based access control, approval workflows, and integration with Prismatic's intelligence pipeline, the dataroom module ensures that documentation is complete, verified, and ready for buyer scrutiny.
Explore the [DD Dashboard](/hub/dd/cases) or learn about [Automated Due Diligence](/blog/automating-ma-due-diligence/) for the buy-side perspective.