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cap-table

Model cap tables, dilution scenarios, waterfalls and round structures — SAFE, convertible notes, priced.

Skill by poorvith-mp

IndexedMIT★ 1
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About

Model cap tables, dilution scenarios, waterfalls and round structures — SAFE, convertible notes, priced. Use when modeling founder equity, SAFEs, option pools, or dilution waterfalls.

Use cases: productivity

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What this skill can do and what it asks for, from its SKILL.md. Checked Oct 25, 2026.

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  • codeload.github.com · found in install command

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  • ~/.claude/skills/cap-table

What's inside

Skill name
cap-table
Description
Model cap tables, dilution scenarios, waterfalls and round structures — SAFE, convertible notes, priced. Use when modeling founder equity, SAFEs, option pools, or dilution waterfalls.
License
MIT
Instructions
59 lines in SKILL.md · view on GitHub

Files (3)

  • SKILL.md
  • cap-table.skill
  • routing.yaml · evals/

SKILL.md (first lines)

# Cap Table

The capitalization table models economic ownership, governance rights, and liquidation economics. Accurately managing a cap table requires modeling fully-diluted share counts, calculating post-money vs pre-money SAFEs, configuring employee equity option pools, and structuring preferred share liquidation waterfalls.

## 1. Share Counts: Issued vs. Fully-Diluted
Distinguish between voting shares and total diluted shares:
- **Issued & Outstanding**: Common stock held by founders, early employees, and exercised shares.
- **Fully-Diluted Shares (FD)**:
  $$\text{Fully-Diluted Shares} = \text{Issued Common} + \text{Unexercised Options Granted} + \text{Unallocated Option Pool} + \text{Convertible Securities}$$
  *Rule*: Always use the fully-diluted share count when calculating per-share price and percentage ownership.

## 2. SAFE Conversion Mechanics (Valuation Cap & Discount)
Simple Agreements for Future Equity (SAFEs) convert into preferred stock upon a qualified priced equity financing:
- **Pre-Money SAFE Conversion Price**:
  $$\text{Conversion Price} = \min\left( \frac{\text{Valuation Cap}}{\text{Pre-Money Fully-Diluted Shares}}, \text{Priced Round Price} \times (1 - \text{Discount Rate}) \right)$$
- **Post-Money SAFE Ownership (Y Combinator Standard)**:
  $$\text{Investor Ownership \%} = \frac{\text{Investment Amount}}{\text{Post-Money Valuation Cap}}$$
  *Note*: Post-money SAFEs dilute existing common shareholders with mathematical certainty, but do not dilute other post-money SAFE holders until the priced round.

## 3. Option Pool Shuffle Mechanics
Lead investors in priced rounds frequently demand an unallocated option pool (typically 10%–15% post-financing):
- **Investor Preference (Pre-Money Option Pool Shuffle)**: The option pool is created/expanded *before* the investor's cash goes in, forcing 100% of the dilution onto the existing founders and common holders.
- **Founder Counter**: Negotiate the pool size based on a hiring plan for the next 12–18 months (e.g. 7% instead of a generic 15%), or negotiate a post-money option pool expansion where all shareholders share dilution proportionally.

## 4. Liquidation Waterfall Architecture
In an exit or liquidity event, proceeds are distributed according to security preference:
1. **Seniority Tier**: Senior debt -> Convertible notes -> Preferred equity holders -> Common shareholders.
2. **Preference Multiple**: 1x Non-Participating Preferred is the venture standard.
   - *Non-Participating*: Investor takes the greater of: (a) 1x original investment amount, or (b) their pro-rata common share of total exit proceeds.
   - *Participating (Founder Anti-Pattern)*: Investor gets 1x investment back FIRST, AND ALSO shares pro-rata in the remaining proceeds ("double dipping").

## 5. Sample Cap Table Summary

| Shareholder Class | Shares Held | % Issued & Outstanding | % Fully-Diluted | Liquidation Preference |
|---|---|---|---|---|
| Founders (Common) | 6,000,000 | 66.7% | 60.0% | None (Pari-passu common) |
| Early Employees (Vested Options) | 1,000,000 | 11.1% | 10.0% | None |
| Unallocated Option Pool | 1,000,000 | 0.0% | 10.0% | None |
| Seed Investors (Series Seed Preferred) | 2,000,000 | 22.2% | 20.0% | 1x Non-Participating ($2.0M) |
| **Total** | **10,000,000** | **100.0%** | **100.0%** | **$2,000,000** |

## Critical Rules
1. Never accept participating preferred shares in a venture term sheet unless in a distressed recapitalization.
2. Always calculate dilution using a post-money capitalization model that accounts for all outstanding SAFEs and promissory notes.
3. Model option pool expansions against an explicit hiring roadmap to avoid giving away unneeded founder equity.

## Verification Checklist
- [ ] Share counts tie out across common, vested/unvested options, and preferred classes.
- [ ] SAFE conversion formulas verified (valuation cap, discount rate, and MFN clauses).
- [ ] Pre-money vs post-money option pool dilution modeled accurately.
- [ ] 1x non-participating liquidation preference confirmed in term sheet review.
- [ ] Section 83(b) elections confirmed filed within 30 days of equity grants.

## Anti-Patterns
- NEVER promise percentage ownership in an offer letter; grant an explicit number of option shares.
- NEVER stack multiple un-capped SAFEs without modeling the catastrophic founder dilution at the priced round.
- NEVER grant equity without a standard 4-year vesting schedule with a 1-year cliff.

From poorvith-mp/skills-finance, MIT.

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Last commit (this folder)
Sep 12, 2026 (1 month ago)
Last release
Oct 2, 2026 (26 days ago)

From GitHub (fetched Oct 24, 2026).

Details

License
MIT
First seen
Oct 24, 2026
Last checked
Oct 24, 2026

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cap-table skill. Agent Mart. https://agentmart.dev/skills/poorvith-mp-cap-table (last updated 2026-10-24)