How do I choose a vertical SaaS growth equity partner?

Every growth equity firm's website says the same four things. Operator-led. Founder-friendly. Deep vertical expertise. True partnership. The words are free, which is why they are everywhere, and a founder reading twelve of these pages learns nothing that separates one firm from another.

But the behavior underneath is not free, and it leaves marks. Fund size and vintage constrain what a firm can do for you regardless of intent. Governance documents say who decides. A reserve policy says whether the second check exists. Reference calls with founders who had a bad year say how the firm acts when the plan breaks. All of it is available before you sign, and almost none of it is on the website.

Ask about the fund, not the philosophy

A firm's structural constraints predict its behavior better than its stated values.

Fund size sets check size, and check size sets attention. A $700M fund cannot write a $3M check and cannot afford to care about a company that size. A fund a tenth of that size, writing $1M to $5M, can. Neither is virtuous; they are different machines, and you want the one built for a company your size.

Vintage sets the clock. A fund raised in 2017 with a ten-year life has three years left when it invests in you in 2024, and that will shape every conversation about timing whatever anyone intends. Ask the vintage year and do the subtraction.

Reserve policy decides whether there is a second check. Ask what percentage of the fund is held for follow-on, how the decision is made, and how often a company that missed a quarter still got funded. A firm without an answer does not have a policy, which means the answer is no when you need it.

Concentration decides whose problem you are. Twelve companies and four partners is a different relationship from sixty companies and four partners. Ask both numbers.

Read the governance before you read the valuation

Founders negotiate price and accept terms. It is the wrong way round, because price affects one number at exit and terms affect every decision between now and then.

For a minority investment the shape that works is one investor seat on a board of three to five, with an independent director the founder and investor pick together, and protective provisions limited to things that genuinely change the company. Selling the company, issuing securities senior to the existing stock, taking on debt above a stated threshold, and changing what business the company is in.

The shape that does not work uses protective provisions to reconstruct control the firm did not buy. A veto on the annual budget is control of the company. A veto on hiring above a salary line is control of the company. Watch for the ratchet, for participating preferred, and for a liquidation multiple above 1x, all three of which quietly move money away from the common stock at exit. And read the drag-along, because it determines whether you can be sold on someone else's timetable.

The board of directors play sets out how Golden Section thinks a board at this stage should actually run, which is a useful comparison against whatever you are being offered.

Test the operational claim

Operational support is the most-claimed and least-verifiable thing in this business, so make it verifiable.

Ask for the name of the person who would work with your company. Ask how many other companies that person carries. Ask what the standing meeting is, how often it happens, and what document exists at the end of it. Ask what happens in the first ninety days, specifically, and write the answer down.

Then check it. A portfolio founder can tell you in one call whether that person showed up in month seven, which is when it matters, rather than in month one when everyone shows up.

For its part Golden Section publishes the work: 63 operational plays with 59 downloadable Excel templates, and a list of 161 mistakes B2B software founders make with the play that prevents each one, all of it maintained in a public repository under Creative Commons Attribution-ShareAlike 4.0. That is a claim you can audit in an afternoon without asking anyone's permission, which is the point of publishing it.

Make the reference calls that hurt

Every firm will hand you three founders who are having a good year. Take those calls; they tell you the ceiling.

The call that tells you the floor is with a founder whose company was written down, missed plan badly, or sold for less than the last round. Ask the firm for that introduction directly. A firm that declines has answered the question. A firm that provides it, and whose founder says the partners behaved decently when there was nothing left to gain, has told you more than any deck.

Four questions are worth asking on that call. Did they show up when it was bad, did they try to change the terms, did they tell you the truth about what they thought, and would you take their money again.

What to do before the first meeting

1. Write down what you want the company to be worth to you at exit, and what you want to be doing the year after. The Meaningful Exit framework exists for this, and a founder who has not done it will accept whatever definition the investor brings.
2. Build the target list from fund size and stage rather than from reputation. Eight firms that can write your check size is a real list.
3. For each firm, get vintage year, fund size, remaining deployment, company count, and reserve policy in writing before the second meeting.
4. Ask for the down-round reference, by name, and notice what happens.
5. Have a lawyer who has papered twenty of these read the term sheet against control, not against price.

The firm you want is the one that answers uncomfortable questions in numbers on the first pass. Ask five of them early, while not having chosen yet is still your strongest position.