INFRASTRUCTUREFOR PRIVATECAPITAL.
Lengdon closes private capital transactions. From room setup to sealed close — a sequenced, encrypted record of every action taken by both parties.
THEAPPEND-ONLYRECORD.
Every action is written to a permanent, append-only log where each entry references the one before it. Altering an earlier entry breaks that reference — visibly, and permanently.
Condition Precedent Met: Regulatory Approval
Term Accepted: Board Seat (Investor)
Document Released: Cap Table (Pre-Money)
SEE LENGDON CLOSE

Book a private demo
30 minutes. We'll show you a live transaction from Room setup to Close. No sales pressure — just the product.
PROCESS
Six sequential gates. Each requires the one before it. The order is enforced by the system — not by convention.

COUNSEL
Both legal teams are brought in. Transaction parameters are formally established before any data is shared. No term sheet, no data room — only counsel.

AGREEMENT
Each party independently confirms their intent to proceed. No single confirmation can trigger the next gate. Both must act; neither can force the other forward.

CONDITIONS
Each prerequisite is assigned to a named owner and tracked until satisfied. The system enforces completion order — conditions cannot be resequenced or skipped.

SIGNING
Transaction documents are executed in sequence by each party. No joint session — each signs in their own time, in their own jurisdiction, with their own counsel present.

PAYMENT
Investor uploads verified proof of transfer. Founder confirms receipt. Both confirmations are required to proceed. The system records each action independently.

CLOSE
Mutual confirmation seals the record permanently. Both parties export a signed copy of the complete audit trail. The room is archived. Nothing changes after this point.
INFRASTRUCTURE,
NOT PARTICIPANT
Lengdon is closing infrastructure for private capital. It begins when two parties have already decided to talk, and ends when the transaction closes or is declined — leaving a permanent, verifiable record either way.
SECURITY
& TRUST
Encryption at rest and in transit; mandatory multi-factor authentication; role-scoped access; per-person NDAs; the append-only record; data residency; no money movement, no custody, no escrow.
Read the Privacy Policy →
WHO IT'S FOR
Lengdon is built for every party in a private capital transaction — not just the two principals. Each role gets the access and record they need, separated by design.
Founder
You're raising from angels, syndicates, or funds. You need a sequenced process that protects you and your investor equally — and leaves a permanent, exportable record of every commitment made.
READY
TO CLOSE?
Initialize a room, invite both parties, and begin the six-gate process today. No integration, no setup call, no consultant required.
