A corn plant in Nebraska, sometime in July. The leaves are deep green. The farmer has put down roughly a third less synthetic nitrogen than he did five years ago. The yield is fine. He shrugs. This is what Pivot Bio looks like in the wild - quiet, unglamorous, working.
The company in the cornfield
Pivot Bio sells microbes. Not software, not a service, not a platform. Bacteria - alive, in a bottle, or sleeping on a coated seed - that hitchhike on the roots of corn and wheat and small grains and pull nitrogen out of the air. The plant gets a steady drip of fertilizer. The farmer gets to skip a portion of the bag he would otherwise have bought from a fertilizer company. The atmosphere gets a small reprieve.
Today Pivot Bio's microbes are working on more than a million acres of American farmland. The company has raised about $617 million across five rounds, employs roughly 330 people between Berkeley, St. Louis and the field, and - per its own announcement in 2023 - has crossed the $100 million-in-sales line. For a biotech selling to farmers, who are famously, professionally skeptical, this is real traction.
It is also a long way from where the science started: a Petri dish at MIT.
A nitrogen factory the size of a soil bacterium is a strange idea right up until you remember nature was using exactly this trick for a billion years before anyone built a Haber-Bosch plant.- the elevator pitch, in the wild
The most useful invention of the 20th century has a hangover
The Haber-Bosch process - which combines atmospheric nitrogen with hydrogen at high pressure to make ammonia - is the reason half the people alive today are alive. It made cheap fertilizer, which made cheap food. It also consumes between one and two percent of the world's energy, runs almost entirely on natural gas, and creates a fertilizer that - by some estimates - loses up to half its nitrogen to evaporation, runoff or microbial conversion to nitrous oxide before the plant ever sees it.
That lost nitrogen is the dead zone in the Gulf of Mexico. It is a chunk of agriculture's outsized share of global greenhouse-gas emissions. It is also money the farmer paid for and threw, literally, into the wind.
You could try to fix this with regulation. You could try to fix it with carbon credits. Or you could try to make a fertilizer that doesn't evaporate because it is grown, not sprayed, exactly where the plant needs it. Pivot Bio chose option three.
Synthetic fertilizer made 20th-century agriculture possible. Pivot Bio is, politely, unmaking it.
A Petri dish, a lab in Berkeley, and a hunch
The science started in the lab of Chris Voigt, a synthetic-biology professor who moved to MIT in 2010. Voigt had been working on a question that sounded, to most people, like a paradox: certain soil bacteria already fix nitrogen for plants in nature - that is how legumes feed themselves - but those same bacteria turn the trick off in nitrogen-rich soils, exactly the soils a corn farmer is creating with his fertilizer truck. So the bacteria are right there. They are just refusing to do the one thing you need them to do.
Voigt and two collaborators - Karsten Temme, then a young engineer, and Berkeley researcher Alvin Tamsir - thought you could edit the off-switch out. Get the bacteria to keep fixing nitrogen even when the soil is rich. Get them to bond with the corn root. Trade a little sugar for a steady supply of feed. It worked in the dish. The company was founded in 2011.
Temme served as CEO for the first decade-plus, raising successive rounds and getting the first product into U.S. farmers' hands in 2018. In August 2023, Chris Abbott - a longtime ag and fertilizer investor - was named CEO; Temme moved to Chief Innovation Officer. The handoff was, by all public accounts, the moment a science project formally became an operating company.
Karsten Temme
Co-founder. Built it from zero to a million acres. Now Chief Innovation Officer.
Christopher Voigt
MIT synthetic biologist. The reason the microbes were ever in a Petri dish in the first place.
Alvin Tamsir
Berkeley researcher. Co-founder. The third name on the early papers.
Chris Abbott
Took the CEO seat in 2023. Background in ag investing and fertilizer efficiency.
Four people, one improbable idea, and a press release dated August 2023 that told the industry: the grown-ups are here now.
PROVEN 40, RETURN, and a bottle of bacteria
The flagship is called PROVEN 40 - microbes for corn, available either applied in-furrow as a liquid at planting or coated onto the seed itself (PROVEN 40 OS). The "40" is the marketing claim: it replaces up to 40 pounds of nitrogen per acre, which in corn-belt math is meaningful. RETURN is the sibling product, formulated for wheat, sorghum, and other small grains. Both ship through ag retailers, the channels farmers already buy through.
Then there is N-OVATOR, which is less a product than a side hustle: a marketplace that lets farmers who reduce their synthetic nitrogen sell the avoided emissions as a credit to companies trying to decarbonize their supply chains. Anheuser-Busch is a buyer. So is anyone whose grain-based product has a corporate sustainability report to fill.
Pivot Bio's pitch in one line: stop burning natural gas to feed plants. Let biology do it instead.
Where the funding came from
$616.9M raised - approximate, by roundSource: company press releases, Agri-Pulse, Tracxn. Bars sized proportional to round; Series A figure approximate.
The Pivot Bio timeline
From Petri dish to combineTrial plots, balance sheets, and slow conversion
The hardest sell in agriculture is to a farmer who has been doing something for thirty years. Pivot Bio's answer has been data, repeatedly, in public. A multi-year national study running 2022-2024 reported that corn treated with PROVEN 40 showed roughly a nine percent higher in-plant nitrogen content compared with standard practice, and farmers replacing nearly 40 pounds of synthetic nitrogen per acre saw an average yield advantage of close to one bushel per acre. A 2024 Northern Plains data set showed yield parity at reduced nitrogen rates in three out of four fields. A University of Kentucky study reported an eleven-bushel-per-acre advantage at certain trial sites.
None of those headlines are individually decisive. Cumulatively, they are an argument. The argument is: the microbes do, in fact, work, and the math, in many soils, in many seasons, pencils. The farmer keeps a little more of his crop and buys a little less of his fertilizer. The retailer keeps the margin on a different product. The atmosphere does not warm up by quite as much.
In a category that runs on suspicion, a published trial is worth more than a press release. Pivot Bio has piled up a stack of both.
Make microbial nitrogen the default
The stated mission - and the press kit is unembarrassed about this - is to make microbial nitrogen the primary source of crop nutrition. Not a sliver. Not a sustainability line item. The primary source. That is an enormous claim, and it is the kind of claim a company that has raised $617 million is more or less obligated to make.
What sits behind the claim is more interesting than the claim itself. Synthetic fertilizer is, structurally, brittle: it depends on natural-gas prices, on global trade routes, on weather windows wide enough to spread it. Biological fertilizer, applied at planting and grown on the root, is none of those things. It is, in the cool language of the industrial buyer, a different supply chain. In the warmer language of the climate-tech investor, it is a hedge against an entire fossil input.
Microbes as infrastructure
If Pivot Bio is right, the most consequential thing it has built is not a product. It is a wedge. The wedge is the demonstration that a major commodity input - fertilizer, the second-largest variable cost in row-cropping after seed - can be partially replaced by a living organism that is shipped in a small bottle. That demonstration will be copied. Competitors are already in the field. Bigger ag-chemical incumbents are licensing and acquiring. The question is no longer whether biological inputs can compete; it is how fast.
The harder question is what happens when, instead of replacing 40 pounds of synthetic nitrogen per acre, the microbe replaces 80, or 120, or all of it. The science isn't there yet. The capital and the field trials and the patience are, however, well underway.
A bottle of bacteria, a coated seed, a quieter combine. Tomorrow's fertilizer is small and alive.
The Nebraska cornfield, slightly different
Return to the field where this profile began. Same farmer, same July, same green leaves. The thing he did differently this year is small enough that his neighbor probably won't notice for another season. He put down less nitrogen. He had a bottle of microbes on the planter. He filled out a form for the N-OVATOR program, and a brewing company three states away bought a credit against the nitrogen he didn't spread.
None of this looks like a revolution. That is the point. The most durable changes in agriculture have never looked like one. They have looked like a different bag on the truck and a slightly higher line on the balance sheet, and they have taken a generation to become invisible. Pivot Bio has, for now, sold the bag and shown the line. The generation is up to the rest of us.