TortoiseEcofin Acquisition Corp. III
Cash in trust
$170M
$170,164,951
Trust per share
—
Redemption value
IPO
Jul 2021
$345M raised
Combination deadline
—
Not disclosed
Filings on record
170
Latest Nov 14, 2024
Business combination
- Target
- Not disclosed in an indexed filing
- Announced
- Aug 15, 2023
- Closed
- Sep 13, 2024
Overview
TortoiseEcofin Acquisition Corp. III is a special purpose acquisition company incorporated and registered with the SEC under CIK 0001847112. It completed its initial public offering in Jul 2021, raising $345M in gross proceeds. The vehicle is sponsored by TortoiseEcofin through TortoiseEcofin Sponsor III LLC. The mandate targets energy transition. Business combination closed; the company trades under a new ticker.
“We intend to focus our search for a target business in the broad energy transition or sustainability arena targeting industries that require innovative solutions to decarbonize in order to meet critical emission reduction objectives.”
Reading the filings
Arithmetic on what TortoiseEcofin Acquisition Corp. III has disclosed, written the way a desk would read it. These are observations, not a rating. Nothing here scores the vehicle or implies a view on it.
Extension history
Shareholders have already approved 2 extensions. Each one opened a redemption window, so the public float and the trust are almost certainly smaller than at IPO, and each typically came with a sponsor contribution that lifts trust per share. A vehicle on its second or third extension is one where the sponsor is paying to keep the search alive.
Warrant coverage
Each unit carried one-fourth warrant per unit. Warrants are dilution deferred: they cost the holder nothing until exercised, and they overhang the post-combination share count. Thinner coverage is generally a sign of a stronger book at pricing.
Filings per month since the first one. A vehicle that has gone quiet with a deadline ahead is a different proposition from one that is still working.
170 filings in all. 3 in the last three months, against a busiest month of 26.
News on TortoiseEcofin Acquisition Corp. III
Last 90 daysNothing in the last 90 days that names this vehicle. We attribute a story only when the release carries the ticker or the registered name, so an empty section means no press release or wire story matched — not that nothing was published. The filings below are the primary record either way.
SEC filing history
Free tier: filings older than 24 hours- SC 13G/A
13G/A TRTL
Accession 0001604488-24-000232
- SC 13G/A
Amended beneficial ownership report (passive)
Accession 0001011438-24-000590
- 15-12G
Deregistration of securities
Accession 0001193125-24-218831
- 425
Business-combination communication
Accession 0001193125-24-211222
- 8-K
Entry into a material definitive agreement; Termination of a material definitive agreement; Other events
Items 1.01, 1.02, 8.01 · Accession 0001193125-24-211219
- 425
Business-combination communication
Accession 0001193125-24-205568
- 8-K
Other events
Items 8.01, 9.01 · Accession 0001193125-24-205567
- 10-Q
Quarterly report
Accession 0001193125-24-200628
- PRE 14A
PRE 14A
Accession 0001193125-24-196986
- 25-NSE
Notification of delisting
Accession 0000876661-24-000627
- 425
Business-combination communication
Accession 0001193125-24-189211
- 8-K
Other events
Item 8.01 · Accession 0001193125-24-189209
- 425
Business-combination communication
Accession 0001193125-24-182424
- 8-K
Notice of delisting or failure to satisfy a listing rule; Regulation FD disclosure
Items 3.01, 7.01, 9.01 · Accession 0001193125-24-182414
- 425
Business-combination communication
Accession 0001193125-24-174505
- 425
Business-combination communication
Accession 0001193125-24-172401
- 425
Business-combination communication
Accession 0001193125-24-167077
- 8-K
Regulation FD disclosure
Items 7.01, 9.01 · Accession 0001193125-24-167071
- 425
Business-combination communication
Accession 0001193125-24-159990
- 8-K
Entry into a material definitive agreement
Items 1.01, 2.03, 9.01 · Accession 0001193125-24-159988
- 425
Business-combination communication
Accession 0001193125-24-156199
- 8-K
Regulation FD disclosure
Items 7.01, 9.01 · Accession 0001193125-24-156193
- 425
Business-combination communication
Accession 0001193125-24-148243
- 8-K
Regulation FD disclosure
Items 7.01, 9.01 · Accession 0001193125-24-148237
- 425
Business-combination communication
Accession 0001193125-24-145144
- 425
Business-combination communication
Accession 0001193125-24-144232
- 425
Business-combination communication
Accession 0001193125-24-143946
- 8-K
Regulation FD disclosure
Items 7.01, 9.01 · Accession 0001193125-24-143933
- 10-Q
Quarterly report
Accession 0001193125-24-139474
- 425
Business-combination communication
Accession 0001193125-24-138592
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TortoiseEcofin Acquisition Corp. III: questions answered
What is TortoiseEcofin Acquisition Corp. III?
TortoiseEcofin Acquisition Corp. III is a special purpose acquisition company incorporated and registered with the SEC under CIK 0001847112. It completed its initial public offering in Jul 2021, raising $345M in gross proceeds. The vehicle is sponsored by TortoiseEcofin through TortoiseEcofin Sponsor III LLC. The mandate targets energy transition. Business combination closed; the company trades under a new ticker.
How much does TortoiseEcofin Acquisition Corp. III hold in trust?
Approximately $170,164,951, as at the most recent filing on record. Trust balances move: shareholders redeem at extension votes and at the combination vote, and sponsors pay contributions in to extend. Treat the figure as a point-in-time disclosure, not a running balance.
When must TortoiseEcofin Acquisition Corp. III complete a merger?
No combination deadline appears in the filings we have indexed. The date is stated in the charter and repeated in each quarterly report; where our parser could not establish it with confidence we leave it blank rather than infer one.
What happens if TortoiseEcofin Acquisition Corp. III does not find a target in time?
The charter requires the vehicle to redeem 100% of the public shares and return the trust, pro rata, to public shareholders. That is the mechanism working as designed rather than a default. Founder shares and warrants are worthless in that outcome, which is why the sponsor's incentive is to get a deal done or to buy more time. Across the market, deadline lapsed without a deal; trust returned to public shareholders.
Can I redeem shares in TortoiseEcofin Acquisition Corp. III, and at what price?
Public shareholders may elect to redeem in connection with a combination vote and at each extension vote, at the pro-rata trust value on the relevant record date. Redemption is a right attached to the public shares only; warrants and rights carry no claim on the trust. The mechanics and the deadline for electing are set out in the proxy statement for the vote in question.
Is the trust value the same as the share price for TortoiseEcofin Acquisition Corp. III?
No. Trust per share is a disclosed, contractual figure: what a redeeming holder receives. The market price is whatever the shares change hands at, which can sit above the trust when a deal is well received or below it when the market doubts one will close. We do not have a current quote for this vehicle, so no spread is shown.
How much dilution do TortoiseEcofin Acquisition Corp. III's founder shares and warrants create?
Each unit also carried one-fourth warrant per unit, which is dilution deferred until exercise. Both are disclosed in the prospectus and both survive into the combined company, which is why a de-SPAC at $10 is not economically the same as an IPO at $10.
Who sponsors TortoiseEcofin Acquisition Corp. III, and what is their track record?
TortoiseEcofin Sponsor III LLC is the sponsor entity, part of the TortoiseEcofin franchise. This is the only vehicle we have attributed to that sponsor. Named principals: Arc Logistics.
Is TortoiseEcofin Acquisition Corp. III a good investment?
That is not a question this site answers. TortoiseEcofin Acquisition Corp. III is covered here as reference data: what the company filed, when it filed it, and what the numbers in those filings say. The Edge, FOMO and Potential scores on this page are derived measures with a published formula, not ratings of investment merit: they describe the setup, and every component is shown so you can take them apart. We publish no price targets and no recommendations, and nothing here should be read as advice. The figures are a starting point for your own work, and each one carries the accession number of the filing it came from.
Where does this TortoiseEcofin Acquisition Corp. III data come from?
Filings TortoiseEcofin Acquisition Corp. III submitted to the SEC under CIK 0001847112: the registration statement and final prospectus for the structure, quarterly and annual reports for the trust, current reports and proxy statements for deals, votes and extensions. Trust economics are taken from the registrant's own XBRL tags rather than parsed from prose, which is why they are exact. Every filing in the history above is listed with its accession number, which identifies the document uniquely on EDGAR; Pro accounts open it directly from the row.
Compiled by the SPACListing research desk
Last reconciled Oct 19, 2026
Every figure on this page is read from documents the registrants filed with the U.S. Securities and Exchange Commission, principally the IPO prospectus (Form 424B4), quarterly and annual reports, current reports and proxy statements, the registrant's own XBRL tags for trust economics. Nothing is sourced from press coverage, from the companies themselves, or from a third-party aggregator. Where a filing does not disclose something, the field is left blank rather than estimated.
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Continue reading
The context around this vehicle: who else the sponsor has launched, which banks priced it, and where it sits in the wider market.
TortoiseEcofin: the full record
Every vehicle this sponsor has launched, what closed, what liquidated and what is still live.
Energy Transition SPACs
Every vehicle chasing the same mandate, ranked by cash in trust.
All completed de-spac transactions
Business combination closed; the company trades under a new ticker.
Deadline calendar
Which sponsors are running out of time, and when the extension votes land.
What is a SPAC?
The structure, the economics and where the risks actually sit.
SPAC glossary
Every term in a blank-check filing, defined the way practitioners use it.
How this data is built
Coverage universe, ingestion, normalisation, lifecycle classification and known limits.