Koster Energy, Inc.
Built from the SEC filing index the day the filing landed. The figures below are the issuer's own from Form D; AltStreet's analysis, sponsor link and data flags follow when the entity is enriched.
Raised
$500K
Investors
12
Min Invest
None stated
What this filing shows
·Every sentence is a value as filed on SEC Form D
Koster Energy, Inc. is a Delaware corporation organized in 2026 that filed a Form D with the SEC on October 21, 2026 in the Energy Conservation industry group. The offering claims Rule 506(b). Koster Energy, Inc. reported $500,000 sold from 12 investors of a $1,000,000 total offering as of the Form D filed October 21, 2026. The offering relies on Rule 506(b), which permits sales to accredited investors and to no more than 35 non-accredited investors who meet a sophistication standard, and prohibits general solicitation. The filing reports no non-accredited investors. The filing lists the minimum investment as $0, meaning no minimum was stated. The Form D names no recipient of sales compensation, which usually means the issuer or its affiliates are placing the securities directly. Sales commissions are reported as $0 and finders' fees as $0. Form D allows these to be estimates. The issuer reports $216,000 of gross proceeds used or proposed to be used for payments to related persons. The issuer's address of record is 602 North 6th Street, Fairfield, IA 52556.
EDGAR Filing Data
Form D — Primary Source
View on SEC.govFilings on Record
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In the Terminal
Filing events
1
latest Oct 21, 2026
Critical / warning
0 / 0
0 watch · 1 info
Statements extracted
0
none on file
NAV prints
0
none on file
Offering chains
1
raising
Latest event New filer · Oct 21, 2026
SEC.govInvestor
- 1 filing event with values and deltas, latest 2026-10-21, and alerts on the next one
- 1 offering timeline: velocity, share raised, first-sale lag, stalled flags
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Related Persons (Form D)
Executive officers, directors, and promoters listed on the SEC Form D filing. Source: SEC.gov.
Polo Leo Altynski-Ross
Executive Officer · Fairfield, IA
Chief Executive Officer
Stephen George Ross
Executive Officer · Fairfield, IA
Chief Operations Officer
Questions About Koster Energy, Inc.
Each answer is built from the values on the SEC filing and the AltStreet ledger, not from the issuer's marketing.
What is Koster Energy, Inc.?
Koster Energy, Inc. is a Delaware corporation organized in 2026 that filed a Form D with the SEC on October 21, 2026 in the Energy Conservation industry group. The filing claims Rule 506(b).
Is Koster Energy, Inc. legit?
AltStreet does not rate legitimacy; it reports the public record. Koster Energy, Inc. filed a Form D with the SEC on October 21, 2026 claiming Rule 506(b). A Form D is a notice of an exempt offering, not a review or approval of it. The newest notice reports $500,000 sold to 12 investors. AltStreet's enforcement record (SEC, FINRA and state actions) shows no action naming the issuer as of today. Before investing, confirm the filing on EDGAR, check the seller's registration on FINRA BrokerCheck, and read the offering documents, which a Form D does not include.
Is Koster Energy, Inc. registered with or approved by the SEC?
No. A Form D is a notice that an issuer is selling securities under an exemption from registration, and the SEC does not review, approve, or pass on the merits of the offering. The filing shows that Koster Energy, Inc. claimed Rule 506(b) and disclosed the items the form requires, such as the amount sold, the minimum investment, related persons, and anyone paid to sell the securities. It does not verify the issuer's claims or its business.
How much has Koster Energy, Inc. raised?
Koster Energy, Inc. reported $500,000 sold from 12 investors of a $1,000,000 total offering as of the Form D filed October 21, 2026.
Who can invest in Koster Energy, Inc.?
The offering relies on Rule 506(b), which permits sales to accredited investors and to no more than 35 non-accredited investors who meet a sophistication standard, and prohibits general solicitation. The filing reports no non-accredited investors. The filing lists the minimum investment as $0, meaning no minimum was stated.
What is the minimum investment in Koster Energy, Inc.?
The Form D lists the minimum investment as $0, which means the issuer did not state a minimum on the form. The offering documents, not the Form D, set the actual subscription terms.
Who is selling Koster Energy, Inc. and how are they paid?
The Form D names no recipient of sales compensation, which usually means the issuer or its affiliates are placing the securities directly. Sales commissions are reported as $0 and finders' fees as $0. Form D allows these to be estimates. The issuer reports $216,000 of gross proceeds used or proposed to be used for payments to related persons.
Who is behind Koster Energy, Inc.?
The Form D lists 2 related persons: Polo Leo Altynski-Ross, executive officer (Chief Executive Officer); Stephen George Ross, executive officer (Chief Operations Officer). Form D Item 3 requires executive officers, directors, and promoters of the issuer to be listed.
Where is Koster Energy, Inc. located?
The issuer's address on its SEC filings is 602 North 6th Street, Fairfield, IA 52556. Its phone number of record is 641 233 0079. It is organized under the laws of Delaware.
How long is the Koster Energy, Inc. offering open?
The issuer indicated that the offering is not intended to last more than one year. An issuer must amend its Form D annually while a continuing offering stays open, and no amendment is on record yet.
What is Koster Energy, Inc.'s revenue?
The Form D reports a revenue range of $1 - $1,000,000.
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Data Methodology
Capital raise figures, investor counts, and filing dates are sourced directly from SEC EDGAR Form D primary documents via the SEC EDGAR submissions API and full-text search index. EDGAR entity profiles and deal-level data are reviewed by AltStreet analysts with backgrounds in corporate finance and securities law — cross-referenced against offering circulars, audited financial statements, and primary regulatory filings before publication. Platform-provided information, where present, is clearly labeled and does not affect EDGAR data or AltStreet editorial coverage. Platforms may request factual corrections for demonstrable inaccuracies by contacting [email protected]. This page does not constitute investment advice.