The LOCKS Algorithm for Evaluating Founder-CEOs
Five traits that predict whether a founder can actually scale a company: Lovable, Obsessed, Chip, Knowledgeable, Student
- Difficulty
- Moderate
- Time to result
- ~ongoing to results
- Steps
- 5
- Confidence
- 92%
A five-part rubric Brian Halligan runs in his head when meeting founders at Sequoia to judge whether they can build a durable company. It moves past resume and charisma to the underlying traits that survive the startup-to-scaleup grind. The mnemonic is LOCK plus an optional S.
Origin
Developed by Brian Halligan from ~20 years as HubSpot CEO plus coaching dozens of fast-growth CEOs at Sequoia. Halligan credits the 'C' (chip on the shoulder) specifically to Sequoia.
Core principles
- 01Followership beats likeability — you want people who inspire others to cross broken glass for them.
- 02Deep founder-market fit signals durability; a problem picked six months ago is a red flag.
- 03A chip on the shoulder supplies the fuel to endure years of grind.
- 04The best founders are perpetual students who learn constantly and reach far back in history, not just 'learn-it-alls'.
How to run it
- 1
L — Lovable (inspires followership)
Ask whether a 28-year-old version of yourself, fresh out of business school, would want to go work for this person and crawl across broken glass for them. Charisma is optional; the ability to inspire people to follow is not.
Pro tip Steve Jobs was 'rough and maybe not lovable' but still inspired total followership — measure followership, not niceness.
- 2
O — Obsessed with the problem
Look for deep, long-standing obsession and founder-market fit, with evidence in their life of going obsessively down a rabbit hole. Be skeptical of people who invented the problem six months ago just to start a company.
Watch out A newly-discovered problem with no personal history behind it usually means the obsession needed to survive won't be there.
- 3
C — Chip on the shoulder
Nearly all of them carry 'a bit of a boulder on their shoulder' — a drive to prove something. This is the emotional fuel for the grind.
- 4
K — Knowledgeable about the domain
Assess whether they are deeply knowledgeable about the specific domain and the business/strategy around it, not just the technology.
- 5
S — Student of the game (optional add-on)
The strongest founders are relentless students who are 'constantly constantly learning' like LLMs, and who study history far back in time — not merely 'learn-it-alls'.
Pro tip Halligan named Winston Weinberg (Harvey), James (Profound), and Gabe (Rogo) as archetypes of the deep-student trait.
In the wild
Halligan uses the framework on founders like Winston Weinberg who, in his late 20s, had never managed a team or captained a sports team. LOCKS surfaces the raw traits (obsession, chip, student) even when the founder still lacks learned skills like giving feedback and inspiring people.
→ Halligan can separate innate, hard-to-teach traits from the coachable gaps a founder can close on the startup-to-scaleup path.
Common mistakes
Over-weighting the K and under-weighting the S
Founders can be brilliant, genius-level and obsessive on domain knowledge yet fail because they never became students of leadership skills like inspiration and feedback. Knowledge alone does not scale a company.
Backing recency obsession
Funding a founder who picked their problem six months ago mistakes enthusiasm for the deep founder-market fit that actually sustains a multi-year build.
Is it for you?
Best for
Investors, board members, and coaches assessing early-stage founders; also founders self-auditing which traits they have versus need to develop.
Not ideal for
Hiring functional executives or ICs — this is a founder-CEO lens, not a general hiring rubric.
From the transcript
“I call it my lock algorithm. L is for lovable.”
“Two is just obsession. Are they deeply obsessed with this problem?”
“The C is something I wouldn't have thought of, but this is a sequoia thing like chip on the shoulder.”
“And the K is just for deeply knowledgeable about the domain.”
“I would say student. Like I look at Winston Weinberg”
From the episode
Sequoia CEO coach: Why it’s never been easier to start a company, and never been harder to scale one
Brian Halligan (co-founder, HubSpot)