MSC Industrial: The Founding Family That Chose to Let Go

Part of Distributor Playbooks — strategy teardowns of every company on the 2025 MDM Top Distributors lists.

MSC Industrial Supply landed on four of Modern Distribution Management's 2025 Top Distributors lists this year: #8 in Industrial Supply, #6 in MRO, #5 in Fasteners, and #10 in Safety, on $3.8 billion in 2024 revenue. Those rankings sit alongside branch-network giants with ten times MSC's location count. The company got there without ever trying to out-branch them, and its most interesting move in the last three years had nothing to do with product at all.

From a trunk in Little Italy to a $2 billion metalworking house

Sidney Jacobson started Sid Tool Co. in 1941 with $1,000 of his own money and $3,000 borrowed from his mother, selling cutting tools to Manhattan machine shops out of his car during the wartime supply crunch. The company incorporated in 1946, published its first "Big Book" catalog in 1964, and by 1969 had computerized its inventory system, an early move for an industrial distributor of that era, according to MSC's own company timeline. It bought Manhattan Supply Company in 1970 and took the name MSC from the two firms' initials.

Sid's son Mitchell Jacobson took over as president in 1982 and pushed the company through its defining growth phase: the 1995 IPO on the NYSE, a headquarters move to Melville, New York, and the 2006 purchase of J&L Industrial Supply from Kennametal for $349.5 million, a deal that roughly doubled MSC's metalworking catalog depth overnight, per Wikipedia's account of the company's acquisition history. Sid's grandson, Erik Gershwind, became president and CEO in 2013. Three generations, one family, in the chair for 72 straight years.

Deep on metalworking, thin on branches, by design

The instructive part of MSC's model is what it refused to build. Fastenal runs roughly 1,600 local branches and Grainger around 300. MSC operates a little over 40 locations nationwide, including five central distribution centers, leaning instead on catalog reach, next-day shipping (with an 8pm cutoff it added back in 2008), and a bench of metalworking specialists and application engineers who function more like technical consultants than order-takers. That depth in cutting tools and precision machining is the reason MSC shows up at #5 in Fasteners and #6 in MRO on the 2025 MDM list rather than trying to compete as a generalist against Grainger.

That specialist posture is also why the company's recent strategic pivot, what it calls "Mission Critical," reads as a natural extension rather than a reinvention. Instead of chasing spot-buy transactions where price is the only variable, MSC has pushed hard into vending machines and in-plant programs embedded inside customer facilities, according to MDM's reporting on the shift. Vending units alone grew from roughly 27,000 to nearly 29,600 in a single year, and embedded programs now account for around 40% of total sales. It is a bet that the way to defend margin against e-commerce price transparency is to make yourself physically inseparable from the customer's shop floor, not to win a race on SKU count.

The unusual part: giving up the crown on purpose

Here is the detail that does not show up on the About page. Public companies controlled by a founding family almost always keep that control through dual-class stock, and they keep it indefinitely. MSC had exactly that structure: Jacobson/Gershwind family Class B shares carried 10 votes each, giving the family roughly 66% of total voting power even as their economic ownership fell well below that.

In 2023, the family proposed unwinding it. Under the agreement that followed, every Class B share converted into 1.225 Class A shares, and the family's voting power was capped at 15% going forward, with anything above that voted pro rata alongside every other shareholder, per MSC's investor relations announcement and the company's SEC filing on the exchange. The family remains MSC's largest shareholder and keeps the right to nominate board seats, but it chose to trade permanent voting control for a cleaner shareholder register, years before it had to.

That decision now looks like the first step in a longer handoff. Erik Gershwind is retiring as CEO effective January 1, 2026, moving to non-executive vice chair, and Martina McIsaac, currently president and CFO, is taking the top job. She is the first MSC chief executive in the company's 85-year history who is not a Jacobson.

The tension worth watching

A distributor built on technical trust, the kind that takes decades to earn with machine shops and manufacturing plants, is now testing whether that trust travels without a Jacobson in the corner office. MSC's answer so far has been to keep promoting from inside: McIsaac has been president and CFO, not an outside hire. It is a conservative way to make a radical change, and it fits a company whose biggest strategic moves, computerizing inventory in 1969, guaranteeing same-day shipping in 1991, giving up voting control in 2023, have consistently arrived a few years before the rest of the industry admits they are necessary.

Distribution rewards whoever moves the boring stuff, tools, fasteners, safety gear, from a catalog page to a machine shop floor without a hiccup, and MSC's history is a reminder that the ownership structure behind that catalog can matter as much as what is in it. This is the fourth installment of Distributor Playbooks, a series on the operating logic behind the companies MDM ranks every year.