A founder remembers raising money from six investors. The bank records show six receipts. The financing folder contains eight SAFE files, two side letters, and several versions with similar names. Before anyone models the next round, the company needs to establish which documents govern the money it actually received.
A SAFE register solves that organizational problem. It records each instrument, its status, and the evidence needed to interpret it. It is not a substitute for the signed agreements or a shortcut to a final conversion calculation. Its purpose is to make sure the next financing begins with an agreed set of inputs.
One row should represent one actual instrument
Give each SAFE a stable identifier and connect it to the relevant investor entity. A contact person's name is not necessarily the legal investor's name. Preserve both where useful, but do not use them interchangeably.
Distinguish a proposed investment from a signed instrument and from received funds. Those statuses may coincide, but the register should not assume that they do. A draft document in a folder is not evidence that the financing was completed.
Record discrepancies explicitly. If the company received an amount that differs from the document, investigate it rather than quietly changing the register to match the bank balance. The explanation may be simple, but the supporting evidence should resolve it.
Keep the original files unchanged. A clean register is valuable only if reviewers can connect it to authentic documents. Renaming a copy for organization is different from altering the underlying record to remove an inconvenient inconsistency.
Identify the version before interpreting the terms
SAFEs should not be treated as one universal instrument. Y Combinator publishes documents and guidance, including post-money forms, but individual companies may use different versions or negotiated terms. Identify what was actually signed. Y Combinator SAFE resources.
A useful register captures the document type and the key fields advisers need to review. It should also point to any amendments or side letters. If a provision requires interpretation, label that task rather than replacing the provision with an unreviewed summary.
The valuation cap is a particularly easy field to miscommunicate. In the relevant SAFE structure it is a contractual pricing term, not automatically a statement of current enterprise value or a guarantee of proceeds. Explain the term using the applicable document instead of presenting the cap as an independent appraisal of the business.
Keep the legal interpretation with the responsible adviser. The administrator's job is to preserve and organize the evidence, then reflect confirmed conclusions accurately. That boundary makes the register more dependable rather than less useful.
Separate money received from modeled ownership
Assume a hypothetical company has three signed investments of $250,000, $400,000, and $350,000. The total investment amount is $1 million. That arithmetic does not tell the company how many shares will ultimately be issued, what rights will attach to them, or what percentage each investor will hold after a financing.
Those outcomes depend on the relevant instrument terms and later events. A register can include a link to an approved model, but it should keep modeled quantities distinguishable from completed transactions. Otherwise an estimate can quietly become the number other teams treat as actual ownership.
When the company updates a model, record which register version it used. If another SAFE is added later, the earlier model may still be useful historically, but it should not appear to include the new instrument. A date and version reference prevent that ambiguity.
Make side arrangements visible without oversimplifying them
Side letters can be easy to miss because they are stored separately from the main financing document. Include a reference and identify who has reviewed the implications. Do not assume that an investor's rights can be summarized fully by a cap and a purchase amount.
Treat rights that depend on future circumstances as conditions to monitor, not as immediate outcomes. An administrator should know that a review may be needed when a relevant event occurs, while the responsible advisers determine the actual obligations.
In a hypothetical case, one investor has an additional agreement that requires attention during a future round. If the register omits the document because it contains no new cash amount, the next financing team may miss it entirely. The record should follow the legal relationship, not just the bank transactions.
Access should reflect the sensitivity of the materials. An investor-specific agreement need not be circulated to every employee who can view a general ownership report. Keep the review process connected without granting unnecessary access.
Review the register before a financing becomes urgent
Schedule a review when fundraising preparation begins. Confirm that each active instrument has a governing document, a known funding status, and any relevant linked agreements. Ask advisers to resolve open questions early enough that the financing model can use confirmed inputs.
Altshare's funding-scenario tools support analysis of financing effects on ownership. Altshare funding scenarios. A well-maintained SAFE register strengthens the inputs to that work. Confirm the treatment of the company's specific instruments instead of assuming a model can infer every negotiated provision from a label.
Use a sample instrument to follow the full path from signed agreement to registered fields to scenario output. If the same term is entered differently in two places, resolve the difference before reviewing the model's conclusion. Precision in the output cannot repair inconsistent source information.
Close the historical loop when an event occurs
When a SAFE is converted or otherwise affected by a transaction, preserve the record of what happened and its supporting documentation. Do not erase the original investment simply because it no longer appears as an outstanding instrument.
Connect the prior instrument to the resulting records so a future reviewer can follow the sequence. This helps explain how a stakeholder arrived at their current position without rebuilding the history from old email attachments.
Also review the register after the event for instruments that remain open. A financing may not affect every record in the same way. The closing checklist should establish the actual result rather than marking the entire folder complete because the round has closed.
A company preparing its next financing can start with a modest task: reconcile the signed documents, money received, and unresolved terms. With that foundation, altshare's modeling discussion becomes more productive because the team can focus on the proposed transaction. The register has done its job when nobody has to pause a financing meeting to ask which version of an old SAFE was actually signed.
This guide is introductory and is not legal, tax, accounting, investment, or compensation advice. Examples are hypothetical. Review company-specific decisions with the appropriate advisers.