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Friday 9 October 2026 · Oil, gas and mining explorers, from their own disclosures

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Carbon Energy Corp

25 story beats from 2006 to 2020

The story so far

The events that changed the company's story, in plain English, each written against everything known about the company at the time. The dot shows whether it was good, bad or neutral for shareholders.

shares on issue market cap (log scale)

20208.3m shares · US$2.3m market cap

  1. 27 Oct

    Carbon Energy Corp deregistered its securities, ending its obligation to file reports with the SEC.

    listing compliance notice

    8.3m shUS$2.3m
  2. 16 July

    Seven weeks after the Appalachian sale, the remaining California business needed the same treatment: its Prudential lenders granted limited waivers of covenant breaches and amended all three of its note and securities purchase agreements. The distress had simply moved to the half of the company Carbon still owned.

    debt default or forbearance

    8.3m shUS$8.5m
  3. 29 May

    The Diversified sale closed on 26 May for $99.2 million in cash after adjustments, with up to $15 million still contingent. Carbon repaid and cancelled the LegacyTexas/Prosperity credit facility entirely and agreed a schedule for paying down the $25.1 million of Old Ironsides seller notes from the proceeds. President Mark Pierce and finance chief Kevin Struzeski left the same day, staying on as consultants at $25,000 a month - after the sale there was little left to run but the California venture.

    asset acquisition disposition

    7.9m shUS$25.4m
  4. 8 Apr

    Carbon agreed to sell its entire Appalachian and Illinois Basin business - the Carbon Appalachia and Nytis Exploration subsidiaries, which is to say almost everything it had built since 2011 - to Diversified Gas & Oil for $110 million in cash plus up to $15 million contingent. Yorktown's funds, holding the majority, approved it by written consent the same week, so no shareholder vote was needed.

    asset acquisition disposition

    7.9m shUS$27.3m
  5. 21 Feb

    A second round of covenant waivers, and this time the lenders shrank the company: the borrowing base was cut from $75 million to $73 million with automatic further cuts scheduled through May, a step-down ladder that gave Carbon a deadline to find money elsewhere. This was six weeks before the oil price collapse of March 2020.

    debt default or forbearance

    7.8m sh

20197.8m shares · US$39.1m market cap

  1. 15 Aug

    Eight months after taking on the Old Ironsides debt, Carbon had to be forgiven for breaching its loan terms: the lenders granted limited waivers and imposed new ones - keep $3 million of liquidity, stop letting bills run past 90 days, and sell non-core assets and hand over the proceeds. This is the point at which the balance sheet started running the company rather than the other way round.

    debt default or forbearance

    7.8m shUS$39.1m
  2. 7 Jan

    Carbon closed the Appalachian buyout on the final day of 2018, paying Old Ironsides $33 million in cash plus about $25 million of its own 10% five-year notes, and took full ownership of the venture and its pipeline and mining subsidiaries. The credit facility was rewritten with LegacyTexas into a $500 million-limit borrowing-base revolver plus a $15 million term loan - a company that had been asset-light and partner-funded was now carrying the debt itself.

    asset acquisition disposition

    7.7m shUS$70.8m

20187.6m shares · US$77.6m market cap

  1. 4 May

    Carbon agreed to buy out Old Ironsides Energy's 73.5% of the Appalachian venture for about $57 million in cash, which would take the venture from a shared vehicle to a wholly owned subsidiary. It was a large cheque for a company of Carbon's size and would have to be financed.

    material agreement

    7.6m shUS$77.6m
  2. 2 May

    The California venture completed a $43 million purchase of Ventura Basin production from Seneca Resources, agreed six months earlier. Because the warrant exercise had lifted Carbon's stake to 54%, a deal signed when Carbon was a minority investor now consolidated onto its own balance sheet, funded by enlarging the venture's secured note facility.

    asset acquisition disposition

    7.6m shUS$77.6m
  3. 9 Apr

    Yorktown Energy Partners XI put $5 million into a newly created class of convertible preferred stock at $100 a share - Carbon's first designated preferred since the 2011 Series A - with the money earmarked for a capital call at one of the ventures. The controlling shareholder was again the funder of first resort.

    capital raising announcement

    7.6m shUS$74.2m

20175.6m shares · US$59.1m market cap

  1. 16 Aug

    The Appalachian venture made its first purchase, $21.5 million of West Virginia gas properties, and Carbon raised its own commitment more than tenfold - from $2 million to $23.6 million, and from 2% to 26.5% of every future capital call. Having proved the structure, Carbon was now putting real money behind it.

    material agreement

    5.6m shUS$59.1m
  2. 4 Apr

    Carbon repeated the California structure in Appalachia: Carbon Appalachian Company was formed with two institutional investors and $100 million of equity commitments to buy producing southern Appalachian assets. Carbon put in only $2 million for 2% but manages the venture, holds a 1% carried interest and can earn up to a further 20% once the outside investors clear their return hurdle.

    capital raising announcement

    5.5m shUS$63.5m
  3. 21 Feb

    Carbon opened a second front in California through a new vehicle, Carbon California Company: two institutional investors put in $22 million of equity plus up to $35 million of notes, and the venture bought Ventura Basin oil and gas assets from three sellers. Carbon took 17.8% of the venture and the manager's role for no cash, was paid $500,000 for doing the deal work, and issued its backers a warrant exercisable only with units of the venture itself.

    capital raising announcement

    5.5m shUS$2.7m

2016111m shares · US$22.1m market cap

  1. 5 Oct

    Carbon bought 2,334 producing Appalachian gas wells and more than 900 miles of gathering line from EXCO Resources and the BG Production companies for just $9 million - roughly 9,300 net thousand cubic feet a day of production at a distressed price. It funded the purchase and refinanced out of its Bank of Oklahoma facility with a new four-year, $100 million secured revolver from LegacyTexas Bank.

    asset acquisition disposition

    111m shUS$22.1m

2014107m shares · US$80.2m market cap

  1. 19 Dec

    The deep-rights sale reached a preliminary closing, with the buyer flagging title defects that Carbon and Liberty had 75 days to cure or replace with other acreage before the price would be cut.

    asset acquisition disposition

    107m shUS$80.2m
  2. 20 Oct

    Carbon's Nytis subsidiary and Liberty Energy agreed to sell the rights below the base of the Clinton Formation under their Kentucky and West Virginia leases to a buyer the filing does not name, keeping everything from surface to the Clinton base, a minority working interest in some of the deep rights and an overriding royalty. Nytis's share of the cash is about $12 million, subject to title and environmental adjustments.

    material agreement

    107m shUS$90.8m
  3. 9 June

    Carbon bought out its second-largest shareholder, paying Cadent's RBCP Energy Fund $0.40 a share for all 8,153,777 shares - about $3.3 million - and cancelled them. The 17% holder that arrived with the 2011 Nytis merger was gone, leaving Yorktown clearly dominant.

    material agreement

    114m shUS$99.6m

2012116m shares · US$63.7m market cap

  1. 18 Sept

    Carbon found an outside funder for its Kentucky drilling: Liberty Energy paid $3.66 million up front for a 40% working interest in a block of leases and agreed to carry part of the drilling cost. The company was choosing to sell down interests rather than borrow to drill.

    material agreement

    116m shUS$63.7m

201192.0m shares · US$55.2m market cap

  1. 6 July

    The company raised roughly $30 million in one day - 44.4 million shares at $0.45 to institutional and accredited investors plus $10 million of Series A preferred bought by Yorktown Energy Partners IX, an affiliate of its controlling holders - and used it to complete the Interstate Natural Gas purchase on 29 June, three months late and after $765,000 net in extension payments. It renamed itself Carbon Natural Gas Company at the same time.

    asset acquisition disposition

    92.0m shUS$55.2m
  2. 19 Apr

    The $29.6 million purchase of gas properties, gathering lines and compression in eastern Kentucky and West Virginia from The Interstate Natural Gas Company, agreed the day the merger closed, was restructured into two closings because the financing was not ready - an early sign that the new company's ambitions ran ahead of its funding.

    material agreement

    47.2m sh
  3. 17 Feb

    The Nytis reverse takeover closed: 47,000,003 shares issued at 1,630.76 for each Nytis share, taking the count to 47.5 million and putting private-equity firm Yorktown Energy Partners' funds V and VI at a combined 75.5%, with Cadent Energy Partners' RBCP fund on 17.2%. Patrick McDonald became chairman and chief executive and Kevin Struzeski chief financial officer; the company formally stopped being a shell and became a working Appalachian gas producer.

    business combination

    47.2m shUS$33.5m
  4. 1 Feb

    The empty shell agreed to merge with Nytis Exploration (USA) Inc. of Denver, which held interests in about 375 gas wells across 264,000 mostly undrilled net acres in six Appalachian and midwestern states. Nytis holders would take roughly 47 million new shares - about 99% of the votes - and replace the entire board, so this was a reverse takeover in everything but name.

    business combination

    47.2m shUS$33.5m

2010

  1. 25 Jan

    The company sold its entire stake in T3 Therapeutics back to the venture for $100,000, closing out the biotech investment it had held since 2002 and leaving an empty listed shell. The separate New York University research funding had already been written down to nothing; proceeds from both were earmarked for the Class A tracking-stock holders rather than ordinary shareholders.

    material agreement

2007

  1. 6 Sept

    The Zimmerman deal closed on 31 August 2007 and the company reincorporated in Delaware by merging its Indiana parent into a new subsidiary. Zimmerman ended up with 14.5% of the shares - a change of control on the filing's own account - and named the board that went with it.

    director officer appointment

2006

  1. 30 June

    The company withdrew its audited accounts for the year to March 2005 after finding it had accounted wrongly for its share of T3 Therapeutics' research spending; the restated loss per share widened from 18 cents to 27 cents. For a shell whose only asset was that stake, this was the accounts of the whole business being redone.

    financial restatement