Decarbonization Plus Acquisition Corp III: insider trades · United States · SEC (Form 4)

About Decarbonization Plus Acquisition Corp III

Decarbonization Plus Acquisition Corp III (NASDAQ: DCRC) was a United States special purpose acquisition company (SPAC) created to pursue a business combination with a target aligned with decarbonization and the energy-transition theme. Established in 2021 as part of Riverstone’s Decarbonization Plus platform, the company followed the standard SPAC model: raise capital through an IPO, hold the proceeds in trust, and search for a private operating business to bring to the public markets. Its market presence was tied to the NASDAQ rather than to a standalone commercial franchise, and its headquarters and corporate footprint were in the United States. ([sec.gov](https://www.sec.gov/Archives/edgar/data/1844862/000156459021057030/dcrc-10q_20210930.htm)) Historically, DCRC became best known for its announced merger with Solid Power, a U.S.-based developer of all-solid-state battery cells for electric vehicles. The SEC process progressed through the effectiveness of the Form S-4 registration statement, followed by shareholder approval in December 2021 and the closing of the transaction. After completion of the business combination, Decarbonization Plus Acquisition Corporation III changed its name to Solid Power, Inc., and its common stock and warrants began trading on the Nasdaq Global Select Market under the symbols SLDP and SLDPW. That sequence is critical for investors: DCRC was not a mature operating company in the usual sense, but a capital markets vehicle that facilitated the public listing of another business. ([prnewswire.com](https://www.prnewswire.com/news-releases/decarbonization-plus-acquisition-corporation-iii-and-solid-power-inc-announce-effectiveness-of-registration-statement-and-special-meeting-date-of-december-7-2021-in-connection-with-proposed-business-combination-301421660.html)) Because DCRC was a SPAC, its “business lines” were corporate-finance oriented rather than industrial or consumer-facing. Its core functions included sourcing a target, negotiating a merger agreement, managing sponsor capital, and executing the de-SPAC transaction. In that context, competitive positioning depended on the quality of the target, the credibility of the management team and sponsor, and the ability to complete a transaction in a crowded SPAC market. The company’s thematic focus on decarbonization gave it a clear investment narrative, but it did not have a diversified product portfolio or recurring operating revenue base of its own. ([sec.gov](https://www.sec.gov/Archives/edgar/data/1844862/000156459021057030/dcrc-10q_20210930.htm)) Recent material developments are therefore best understood as corporate events. The key milestone was the Solid Power merger, which converted DCRC from a blank-check vehicle into an equity listing for a battery-technology company. SEC filings also reflect the typical SPAC capital structure, including founder shares, private placement warrants, and sponsor-related arrangements. For investors reviewing Form 4 insider activity, this matters: the historical insider filings are primarily linked to the sponsor and SPAC formation period, not to an ongoing operating business with conventional insider buying/selling patterns. ([d18rn0p25nwr6d.cloudfront.net](https://d18rn0p25nwr6d.cloudfront.net/CIK-0001844862/0893d0cc-9be3-4325-90d0-44e421fb947d.pdf)) In short, DCRC should be described as a former NASDAQ-listed U.S. SPAC that served as the public-market entry point for Solid Power. Any SEO or investor-facing content should make that distinction explicit, since the ticker’s history, corporate identity and economic profile changed materially after the business combination. ([d18rn0p25nwr6d.cloudfront.net](https://d18rn0p25nwr6d.cloudfront.net/CIK-0001844862/0893d0cc-9be3-4325-90d0-44e421fb947d.pdf))