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Star Peak Corp II

STPC · NYSE

Trust settledBenson Hill, Inc. · Finished

NO ACTION REQUIRED

Nothing left to do

The purchase completed and the shares became shares in the company it bought. There is no deadline left to miss.

No price history on file yet — daily closes accumulate from the market data feed.

Trust settled · There is no line to draw here. This vehicle has finished: the cash was paid back or spent closing the deal, so the last filed figure describes an account that no longer exists and would be a floor under nothing.

SpacBrain’s read

Trust settled

The deal closed — SPAC shares became the target's shares, so there is no trust left to redeem (nobody missed a window; holders who wanted cash elected it at the vote).


In plain terms

What it is
A SPAC from Star Peak Sponsor II LLC, listed on NYSE in January 2021.
What it's doing now
It agreed to buy Benson Hill, Inc.. That purchase completed, and it stopped being a SPAC — the shares became shares in the business it bought.
What you should know
This SPAC has finished. The purchase completed, and the shares became shares in the company it bought — anyone who wanted the cash instead asked for it at the vote, so there is no cash left here to claim and no deadline left to miss.

At a glance

Where it stands
Closed (deSPAC)
The business it bought
Benson Hill, Inc.
Industry
the deal record does not name the target's industry yet
Deal value
not stated in the filings we hold
Price vs cash at settlement
no live price on file
Cash in trust when it settled
not yet extracted into a snapshot — the filings below may state it
the last trust total filed while this was still a SPAC — the account has since been paid out or used to close the deal
IPO
7 January 2021
size not on file
Headquarters
1200 RESEARCH BOULEVARD, ST. LOUIS, MO, 63132
registered in Delaware
Lead underwriter
not extracted from the prospectus yet
Key officers
Rohr Craig (Director) · Chiu Rita Wing Nga · Jacobi Daniel (Director)
Listed securities
STPC common
Cash held per sharenot filed for this window

This vehicle has finished, so there is no window to file a cash-per-share figure for and none will follow. No estimate is shown in its place.

Next date that mattersno dated event on file

Nothing dated is on file. That is an absence in the record, not a statement that nothing is coming.

Yield to redemption

Nothing left to redeem — no yield to compute.

This SPAC has finished — its trust was paid back or used to close the deal, so there is nothing left to redeem and no yield to compute. A yield to redemption is a claim that you can hand these shares back for the trust cash. That account is closed, so this page will not print a number here.


What happened to the cash

The reasoning behind the verdict above, in the order the filings establish it.

  1. The deal closed — SPAC shares became the target's shares, so there is no trust left to redeem (nobody missed a window; holders who wanted cash elected it at the vote).

What has happened, and what is coming

1 dated milestone

Every dated step from the day it listed to the next date you may have to act on. Where you have to do something, the day your broker needs the instruction is marked too.

  1. 7 January 2021IPOpassed

    IPO size not on file


The deal

terms as filed

What it is buying, on what terms, and how much of the combined company new shares take from you.

  • closed

    What Benson Hill, Inc. does — read from investors.bensonhill.com on 26 August 2026

    Benson Hill is a seed innovation company that unlocks nature’s genetic diversity in soy quality traits through proprietary genetics, its AI-driven CropOS® technology platform, and its Crop Accelerator. The company collaborates with strategic partners throughout the agribusiness value chain to meet demand for better feed, food, and fuel.

    agribusinessseed innovation
    Deal structureSEC-primary — BCA 8-K / S-4 / DEFM14A
    PIPE
    ≈ $225M · unsourced
    Min-cash condition
    $225M

    PIPE terms — instrument, coupon, conversion price and any reset floor — are not sourced for this deal. The size above is itself unsourced — a stored figure no filing we hold states — so neither the size nor the terms should be read as cited.


The score

deterministic, from filed fields

STPC is not in the scored universe, so no score is shown. A withheld score is a fact about the record, not a verdict about the company.

Asymmetric return scoreNeither a price nor a cash-per-share figure is on file for this vehicle, and the score is a ratio between the two. Nothing is estimated to fill the gap.

The score is only published for names that carry both a price and a filed cash-per-share figure — 292 of the tracked fleet today. The rest keep an empty dial rather than a modelled one, and fill in by themselves as the fields land.

See the names that are scored, and how


The company

from SEC filings
Read the full profile

Star Peak Corp II (STPC) was a Delaware-incorporated special purpose acquisition company headquartered at 1200 Research Boulevard, St. Louis, Missouri, that completed its initial public offering on January 7, 2021, with common stock listed on the New York Stock Exchange under the ticker STPC. The offering was registered under SEC file number 333-251488 and priced pursuant to a Form 424B4 prospectus filed that same day, following an S-1 registration statement filed on December 18, 2020, and an 8-A12B effectiveness filing dated December 30, 2020. The sponsor was Star Peak Sponsor II LLC, as identified in the prospectus definitions. Specific terms regarding the per-unit trust amount, warrant structure, offering size, and business-combination deadline were not available in the cited source materials.

On May 8, 2021, Star Peak Corp II entered into an Agreement and Plan of Merger with Benson Hill, Inc. (then referred to as Legacy Benson Hill), a Delaware-based agri-food technology company, and STPC Merger Sub Corp., a wholly-owned subsidiary of STPC. The business combination was consummated on September 29, 2021, through a merger in which STPC Merger Sub Corp. merged with and into Legacy Benson Hill, with Legacy Benson Hill surviving as a wholly-owned subsidiary of STPC. Upon closing, STPC changed its name to Benson Hill, Inc., and Legacy Benson Hill was renamed Benson Hill Holdings, Inc., with the combined entity's common stock trading on the NYSE under the symbol BHIL. Star Peak Corp II's status as a shell company terminated effective October 5, 2021, as reported in a Form 8-K filing under Item 5.06 (Change in Shell Company Status), after which the registrant filed under SIC code 2000 (Food and Kindred Products).


Material findings

from the full read of every filing

Every document this company files gets read whole — body and exhibits. These are the ones the read flagged as material, newest first, each citing its filing.

  • Officer exculpation narrows the personal liability of officers for breaches of the duty of care, so the two charter items together ask holders to compress the share count and reduce what management can be sued for at the same meeting. Executive turnover is already priced in: of the 211,820 restricted units granted to Mr. Freeman on March 9, 2023, 70,606 vested on March 16, 2024 and the remaining 141,214 were cancelled under his separation agreement when his employment ended.

  • The registered figure is built from Benson Hill's capitalisation after conversion: 147,562,680 of the shares are itemised, of which 130,000,000 are issuable in respect of Benson Hill's outstanding common stock after giving effect to conversion of all of its preferred stock into common. So the preferred converts before the exchange rather than being paid a preference, and the gap between 130,000,000 and the 149,600,000 registered is what the option, warrant and other components add on top.

  • The registered total is unchanged but its makeup is not — a category of options has been carved out of the 130,000,000 shares issuable in respect of Benson Hill's common stock, so the same ceiling now covers a slightly different set of instruments. The 17,562,680 shares of restricted New Benson Hill Common Stock still sit in escrow, vesting only on the earn-out thresholds. Because the total did not move while a component was removed, this is a reallocation inside the cap rather than a change in the dilution a holder faces.

  • More than a tenth of the registered stock is contingent and escrowed: 17,562,680 shares are restricted Earn Out Shares held in escrow that vest only on earn-out thresholds achieved before the third anniversary of closing, and a further 2,037,320 shares back Earn Out Awards to be granted to certain Benson Hill option holders — with both amounts adjustable one-for-one before consummation. The 130,000,000 base already gives effect to conversion of all Benson Hill preferred stock and includes shares reserved for future exercise of converted options and warrants.

  • The composition is unchanged and remains heavily contingent: of 147,562,680 shares, 130,000,000 go to Benson Hill's common holders after conversion of all preferred, including shares reserved for options and warrants that convert at closing, while 17,562,680 are restricted Earn Out Shares held in escrow that vest only on earn-out thresholds achieved before the third anniversary of the closing. A further 2,037,320 shares cover Earn Out Awards granted to certain option holders, and the two earn-out buckets are capped in aggregate.

  • A large slice of the registered stock is contingent rather than delivered: of 147,562,680 shares, 130,000,000 go to Benson Hill's common holders after conversion of all preferred and include shares reserved for converted options and warrants, while 17,562,680 are Earn Out Shares held in escrow that vest only on earn-out thresholds achieved before the third anniversary of closing. A further 2,037,320 shares cover Earn Out Awards granted to option holders, and the filing caps Earn Out Shares plus Earn Out Awards at 19,600,000 in aggregate.


Filings

live EDGAR feed

Everything this company has filed with the SEC recently, newest first, each with a plain summary of what changed and why it matters.

Show the other 10 filings

The record

The reference detail — how the shares were structured at listing, how thinly they trade, and where the company is registered.

Show the reference detail

Unit structure

Cash in trust at IPOnot extracted from the prospectus

from 424B3 0001104659-22-121292

Trading & liquidity

Average daily volume (20d)no volume reported on the bars we hold
Average daily $ volumeneeds both volume and a live price
Range over the bars heldnot enough price history
Total cash in trustthe trust total is not in the last XBRL stamp

Company profile

Industry (SIC)Food and Kindred Products (2000)
Registered inDelaware
Exchange · CIKNYSE · 0001830210

All filings on EDGARopens on sec.gov in a new tab

Directors & officers


Institutional holders

from SC 13G/13D

Funds that have declared a stake above 5%. Heavy ownership by arbitrage funds usually means heavy cash-outs at the next vote.

Show the declared stakes

12 filers with a stake on file · 0 re-affirmed in the last 12 months. A stake with no amendment since is the filer’s last word on it, not proof it is still held — and percentages filed in different years are percentages of different floats, because this vehicle’s share count collapses at every redemption.

One line per filer, not per reporting person: a joint schedule names the management company, its funds and often the individual who controls them, and all of them report the same shares. Click a name for that filer’s whole footprint across every SPAC it has declared a stake in.


News

company wires and the financial press

Reporting we have matched to this ticker. Headlines belong to the outlets that wrote them.


Sources on file

harvested pages, kept in full

Every public page we have read about this company, stored in full so a source can never go missing.


In plain English

tap a term to open it

Every piece of jargon this page could have used, and what it actually means.

Open the plain-English guide
No floor / floorlessthe cash guarantee is gone — the price is unprotected

A SPAC's downside protection is not the cash in trust; it is your right to demand that cash. Once the redemption window closes, the cash stays with the company and the share can trade anywhere.

Redemption deadlinethe last day to hand shares back for cash

Set by the filing that calls the meeting. Tender after it and the company is under no obligation to pay you the trust value.

Broker action datethe day your broker needs the instruction — earlier than the official date

Brokers batch redemption instructions to the transfer agent, so the practical cutoff is roughly two business days before the published deadline. This is the date that actually costs people the floor.

Cash in trust / trust per sharethe cash the company is holding for each public share

Filed quarterly in the 10-Q's XBRL. It earns interest between filings, so the figure on a given day is slightly higher than the last filed one — where we show that we label it an estimate.

Trust discountbuying below the cash held for you

Only meaningful while a redemption right exists. On a floorless name the same arithmetic is not a discount, it is the market pricing distress, and this product will not call it a yield.

Dilutionhow much of the company new shares take from you

Sponsor promote, PIPE shares, warrants and rights all issue stock that did not pay $10 for it. The headline deal value is before that; the effective value is after.

Pro-forma equitywhat the company is valued at once the deal closes

The combined company's equity value assuming the announced terms and the redemptions that have actually happened.

ARShow much upside you get per unit of downside

SpacBrain's asymmetric-return score. It is deterministic — the same inputs always produce the same number — and it is capped, not zeroed, when the floor is gone.

De-SPACthe day the SPAC becomes the real company

The shares stop being a claim on a pot of cash and start being equity in an operating business. Roughly 80% of recent de-SPACs traded below $10 within a year.

Outside datethe contractual long-stop for closing the deal

A deadline between the SPAC and its target, not between the SPAC and you. It confers no right to cash, which is exactly why it must never be counted as a redemption window.

Accession numberthe SEC's unique id for one filing

Every figure on this page carries the accession of the filing that states it, so you can open the primary document rather than trust us.

Accreted NAV (estimate)the last filed cash figure, plus the interest it should have earned since

A model, not a filing: last filed value compounded at the 3-month T-bill for the days elapsed. Always shown in italic with the word estimate, and never printed beside a filed number without it.


Ask the brain

from its filings
Data provenance & audit trail6 internal entries

Written by SpacBrain’s data agents whenever a figure is captured, corrected or flagged, and kept verbatim so every number on this page can be traced back to the filing that states it. This is a running log, not the current record: an early entry may be superseded by a later correction — the panels above always hold the current values.

STPC — company record
UNIVERSE-IPO-INDEX2026-08-17

admitted from EDGAR's QUARTERLY FORM INDEX, walked without any SIC filter. The SIC 6770 census could not reach this registrant: EDGAR reassigns a shell's SIC the day it stops being one, and this CIK now files under 2000 (Food and Kindred Products). The screen found it by filing SHAPE instead — S-1 2020-12-18 → 8-A12B 2020-12-30 → 424B4 2021-01-07 — which nothing rewrites. Admission rule: src/lib/universe-admit.ts. SIC 2000 + self-described blank check in 424B4 0001104659-21-002016; 424B 0001104659-21-002016 priced 2021-01-07 under S-1 0001104659-20-137416 (file 333-251488, an offering for cash); common ticker STPC off 10-Q 0001104659-21-102402 (2021-08-10); lifecycle EXITED. The pricing prospectus was filed under SEC file number 333-251488, which belongs to S-1 0001104659-20-137416 (2020-12-18) — a registration of shares sold for CASH, which is what makes it an IPO rather than merger consideration. Blank-check status from the registrant's own first-person sentence in that prospectus (EDGAR full-text search, 424B4 2021-01-07). Ending PROVEN, not inferred: CLOSED per 8-K 0001104659-21-122720 (2021-10-05) — 8-K item 5.06 "Change in Shell Company Status" (EDGAR item index, items: 4.01,5.06). ipoSizeM and deadline left NULL: gross-proceeds prose conflates the over-allotment with the offering, and a charter deadline belonging to a vehicle that has ended is a date nobody can act on. ipoDate is the 424B pricing date.

SPONSOR-ID2026-08-14

sponsor "Star Peak Sponsor II LLC" sourced from prospectus definition (10-K/A) acc 0001830210-23-000071.

NAME-REPAIR2026-08-31

"Benson Hill, Inc." is the registrant's CURRENT identity, adopted when the combination closed — EDGAR renames on the closing day, so the rename predates the ending we store and every date-based check cleared it; the vehicle traded as "Star Peak Corp II" per the COMPANY CONFORMED NAME in 424B4 0001104659-21-002016 filed 2021-01-07. §98

Deal — Benson Hill, Inc.
UNTAGGED

[CLOSED-RENAME] EDGAR CIK 0001830210 records "Star Peak Corp II" ending 2021-10-01; the registrant continues as "Benson Hill, Inc.". The rename is the SEC's own record of what the vehicle became, keyed by CIK. Closed 2021-10-01. No deal value is set — a rename says what was acquired, never for how much. No date column is set: Deal has announcedAt, voteDate and expectedCloseAt and nowhere to record an actual close, so the SEC's date is kept here until that column exists. [DEAL-STRUCTURE-MINED] pipeSizeM=225, minCashM=225 from primary filings (0001104659-21-066988).

PROFILE-STUB2026-08-25

entity created from the filed target name; no About paragraph on file, so every other field awaits a sourced read

PIPE2026-08-29

pipeBasis set to UNSOURCED: the size came from the research seed / an earlier record and no filing we hold states it — surfaces now label it "unsourced"; an LLM re-read to FILED replaces this when credits allow