Mark Terbeek

The through-line

Terbeek's entire framework rests on a single premise: a venture investment is a decade-long relationship, and almost everything else follows from that. "These great companies you need to be prepared to be in them for at least 10 years and you want to be in them for 10 years," he says, "and so that's like a professional marriage" [1]. He measures it against the human relationships people actually understand, noting it is "two and a half times longer than college," and grounded in the same things any good partnership is: "respect open communication and enjoying being together which isn't talked about enough" [1]. Over time his framing has sharpened rather than changed. Having entered the business in 1995, just before Netscape's IPO, he watched a period when a Series A could reach a public listing in five to seven years, so the choice of partner mattered but the duration was shorter [2]. Today "these best companies are staying private for 10 15 years. Maybe maybe never will go public" [2], which makes the selection decision far more consequential than it was when he started, and makes founder-investor fit a topic he thinks the industry underweights next to product-market fit and founder-market fit [2][4].

On why the investor choice is harder to undo than a marriage

He is blunt that these relationships come with legal scaffolding that makes exit difficult: investors hold preferred rights, management letters, and often a unilateral right to a board seat or observer seat that requires them to waive it [2]. In his words, professional marriages "in some ways they're almost harder to get out of than a actual marriage," and "it can be difficult to decouple yourself from your board member" [2]. Disagreement itself is survivable. What is not is a breakdown in communication: "if you have a relationship that breaks down where you're not even really able to communicate well with each other, it can be really toxic and very like frustrating when you're building" [2]. He agrees that nominal board control is a weak defence, since blocking rights around financing and sale can leave a founder with a majority of votes and no freedom of action [2].

On diligencing your investors as seriously as a key hire

His standing counsel to founders, including ones he is not backing, is that investor selection deserves "at least the same level of scrutiny and effort that you put into hiring a direct hire" [2]. A head of sales or head of product gets multiple interviews, a structured process, advice from confidants, and both on-list and back-channel references. Investors should get the same, and "the best ones are talk to other founders who work with these guys," because that is where the truth is [2]. His frustration is that "that's almost never done," partly because founders would rather get back to building, and partly because investors apply time pressure and exploding offers precisely to prevent it [2]. He accepts the caveat that some references will be sour for structural reasons, a founder who did not get followed on or was hurt in a pay-to-play, and answers it by insisting the underlying test is still whether the investor was open and honest about where things stood [2].

The evaluation itself he splits into three parts: the reputation of the firm and of the individual partner, the chemistry between founder and investor, and the terms and how they position the company for the next financing rather than maximising this one [2]. Before any of that, he wants founders to ask what they actually need in a partner, which starts from the culture they are trying to build and the specific gap they are filling, whether that is sleeves-rolled-up operating help, sales and marketing depth, product and engineering background, or a network that opens customer relationships [2]. His observation is that repeat founders, looking back with objectivity, would trade some valuation for genuine alignment: someone who will "be direct," "show up," and be "always thinking about what's best for the company, not for the investor and their position only" [2]. The practice of meeting founders on a walk, side by side rather than across a table, comes up as one way that relationship gets built [2].

On transparency being the thing founders actually want

Asked what founders resent most, he does not say lost money or lost time. "What I think founders really mostly don't like is lack of transparency" [2]. Sometimes the investor is unwilling to be honest, sometimes their own firm's situation prevents them from giving a concrete answer, and either way the founder is left guessing. His logic is practical: "if they know where they stand, then they can figure out how to move forward" [2]. Inside his own relationships this becomes a stated commitment made during the courtship: hard decisions will come even when the company is winning, and "we're going to try to empathy and compassion but we're going to be direct with you," with the expectation of the same in return [1]. The goal is to be the first call on both the great news and the news a founder wishes they did not have to make a call about: "we want to be that call" [1].

On chemistry, character and prickly founders

He does not require that he like a founder in the conventional sense. Looking back at the founders he has worked with successfully, "they have very different profiles," and what they share is a character element rather than a personality type [2]. The non-negotiable is trust: "do you trust them like there's an honesty level because so much of our business as you know is based on trust" [2]. Given that, quirks and introversion are workable, and the adjustment is his to make: "I don't have to change my character, but I can change how I show up with that founder," communicating more by email with some, and treating debate as sport with the ones who want it [2]. Once invested, he defines the director's job narrowly: understand the plan they are shooting for, get aligned on it, then "look at them as the star quarterback and like knock obstacles out of the way for them so that they can go win" [2].

On flexibility, and being willing to be replaced

The other tenet he lays out to entrepreneurs before investing is that Greycroft will be flexible, because nobody's forecast survives a decade. "None of us are going to be right even if it's wildly successful," he says; the business probably will not resemble what anyone thought they were backing [1]. That flexibility extends to his own seat. Even with great chemistry at the outset, "what he needs may not be mark at some point," and the firm has switched partner roles on portfolio companies when another partner developed better expertise, at the company's option rather than by imposition [1]. He therefore spends deliberate time in the courtship trying to anticipate the twists the relationship could take, slowing down even in hot, time-pressured deals to make sure the founder is calling references on him, and to understand whether the company's culture is consistent across employees, customers, board and investors [1].

On boards and growing the pie

He distinguishes sharply between the shareholder vote, where anyone may vote their own interest, and the board vote, which he treats as the one that matters, because directors owe a fiduciary duty to all shareholders and not to their own position [1][2]. The question he wants a board asking is "how do we make the pie the biggest," how to build the most enduring business and optimise for the very long game [1]. Founders usually already think this way, because hiring, building an option pool and taking dilution have taught them the arithmetic [1]. When that culture holds, formal conflict largely disappears: "there's hardly ever a split vote on the board," because founders execute, stay open about the challenges, and build consensus before any complicated vote arrives [1]. The reciprocal commitment is that the investor puts "the company's interests in front of ours," and the hope that founders will subordinate even their own interest when that is what the company needs [1]. He concedes this is hard, "because there's a lot of ego involved on both sides," and says it is cathartic when the trust underneath actually holds [1].

On how the venture landscape has shifted

His account of the change since the mid-1990s is geographic as much as temporal. When he joined, his firm was likely the only one of its kind in Chicago, almost everything was in Silicon Valley or Boston, New York and Los Angeles were not meaningful secondary markets, and true early-stage investors were rare [2]. Rounds were smaller and earlier by today's standards, the pool of investor options was narrower, and companies went public smaller, earlier and faster [2]. The consequence he draws is not nostalgia but urgency: fewer forced exits and longer private lives mean the partner choice now compounds over a much longer horizon [2].

On enterprise software and systems of record

His investing focus is enterprise and B2B software, and he has sat on the boards of Scopely and Icertis [5][8]. He works across the frontier of cloud platforms and enterprise software, comparing enterprise against consumer venture investing, and is drawn to system of record businesses, with contract intelligence at Icertis as a worked example [6][9]. Greycroft, on his description, operates as a seed-to-growth fund rather than at a single stage [8]. On product judgement in this category he holds that waiting for customers to ask for a capability means you are already late; it should have been built before the request arrived [6][9]. His view of the founder journey is coloured by having been an entrepreneur himself, which he cites as the source of both his empathy for how hard company-building is and his enthusiasm for it [2][7].

Takeaways

• Treat an early investment as a ten-year professional marriage; nothing in the terms matters as much as whether respect, open communication and enjoyment survive a decade [1].
• Diligence investors with at least the effort you would put into hiring a head of sales, and weight back-channel references from other founders who worked with them above the list they hand you [2].
• Evaluate offers on three axes: reputation of firm and individual, chemistry with the specific partner, and how the terms position the next round rather than maximising this one [2].
• The single biggest founder grievance is not bad news but opacity; founders who know where they stand can act, and those who do not cannot [2].
• Chemistry is optional, trust is not; quirky or difficult founders are workable if the honesty is real, and it is the investor's job to change how they show up [2].
• The board vote, not the shareholder vote, is the one that counts, and the right question in the room is how to make the pie biggest for all shareholders [1].
• Expect to be wrong about what the business becomes, and be willing to hand your seat to a better-suited partner if that is what the company needs [1].
• Longer private lifespans, ten to fifteen years or never going public, have made the choice of investor a higher-stakes decision than it was when exits came in five to seven years [2].