Completed · 21 Jul 2022ACTDU · NasdaqCIK 1842279Sponsor at IPO: ArcLight CTC Holdings II, L.P.

ArcLight Clean Transition Corp. II

Now OPAL Fuels Inc. · Name history

$311MTrust raised at IPO · 12% of public shares left after its last counted vote

Merged with OPAL Fuels Inc. (OPAL) · Energy and utilities

IPO22 Mar 2021
Searching24 months
Deal announcedAgreement signed
Closed21 Jul 2022

Tavia Read What stands out, from the filings · snapshot 14

01
Larger than 75% of 2021’s SPAC IPOs.
$311M raised, against a median of $239M for the 610 SPACs that priced in 2021.
02
88% of public shares redeemed across 1 vote.
The merger vote, counted from the SPAC’s 8-Ks. 12% of the public shares remained after the last one.
03
Closed its merger 16 months after its IPO.
The combined company is OPAL Fuels Inc. (OPAL). Sector: Energy and utilities.

Worked out from checked figures in snapshot 14 · no forecasts or advice

Key terms

Other 2021 SPAC IPOs →

IPO priced: 22 Mar 2021
IPO closed: 25 Mar 2021
Raised: $311M¹
Units sold: 31,116,305²
Trust raised: $311M³
Trust per unit: $10.00⁴
Unit: 1 sh + ⅕ warrant⁵
Months to complete: 24⁶
Deadline before extensions: 25 Mar 2023
Over-allotment: Exercised in part

Each unit: “one Class A ordinary share and one-fifth of one redeemable warrant”

Name history

The same company under every name it has filed with the SEC, tracked by its CIK, 1842279. This page keeps its IPO name; the others lead here.

ArcLight Clean Transition Corp. IIAt IPO4 Feb 2021 – 21 Jul 2022
OPAL Fuels Inc.Now21 Jul 2022 – today

Dates are those EDGAR records for each name, as of 16 October 2026. A name change follows a shareholder vote or a merger’s closing, and is reported in an 8-K.

How it compares

ArcLight Clean Transition Corp. II against the 610 SPACs that priced in 2021.

Raised: $311M; 75% of 2021 SPACs are below it; 2021 median: $239M
Trust per unit: $10.00; 63% of 2021 SPACs match it; 2021 median: $10.00
Months to complete: 24; 56% of 2021 SPACs match it; 2021 median: 24
Redeemed across its votes: 88%; 69% of 2021 SPACs are above it; 2021 median: 94%

Trust and redemptions

Merger vote · 15 Jul 202227,364,124 of 31,116,305 redeemed (88%)

Public shares before each vote and the shares redeemed, as its 8-Ks (or the next 10-Q or 10-K) state them. Only votes whose redemptions were paid count.

Firms named in the prospectus

Bookrunners

Other SPACs from ArcLight Clean Transition

ArcLight Clean Transition’s track record →

ArcLight Clean Transition has brought 2 SPACs to market since 1 January 2019, $589M in all: 2 completed. 2 of the 2 that reached an end completed a merger.

SPAC	IPO	Raised	Status	Outcome	Months
ArcLight Clean Transition Corp. II This SPAC	22 Mar 2021	$311M	Completed	OPAL Fuels Inc. (OPAL)	16
ArcLight Clean Transition Corp.IPO before 2021	22 Sept 2020	$278M	Completed	Proterra Inc (PTRA)	—

Months: from the IPO to the merger’s closing or the liquidation. SPACs are grouped by sponsor when their names, or their sponsor entities, match once the legal form and series numeral are taken off.

Peers

Other 2021 SPAC IPOs with Barclays Capital Inc. as bookrunner.

SPAC	IPO	Raised	Unit	Status
Growth for Good Acquisition Corp	9 Dec 2021	$253M	1 sh + ½ warrant + 1 right (1/2)	Liquidated
Power & Digital Infrastructure Acquisition II Corp.	9 Dec 2021	$288M	1 sh + ½ warrant	Completed
Capitalworks Emerging Markets Acquisition Corp	30 Nov 2021	$230M	1 sh + ½ warrant	Deal announced
RCF Acquisition Corp.	9 Nov 2021	$230M	1 sh + ½ warrant	Completed
Spindletop Health Acquisition Corp.	3 Nov 2021	$230M	1 sh + ½ warrant	Liquidated

Sources

PFinal prospectus: 0001193125-21-092768
1Gross proceeds: 0001193125-21-096722The Units were sold at an offering price of $10.00 per Unit, generating gross proceeds of $311,163,050.
2Units sold: 0001193125-21-102117consummated an initial public offering (the “IPO”) of 31,116,305 units (the “Units”) at an offering price of $10.00 per Unit
3Trust raised: 0001193125-21-102117$311,163,050 in the aggregate (the “Offering Proceeds”), were placed in a trust account
4Trust per unit: 0001193125-21-092768$275 million, or $316.25 million if the underwriters’ option to purchase additional units is exercised in full ($10.00 per unit in either case), will be deposited into a U.S.-based trust account
5Unit composition: 0001193125-21-092768Each unit has an offering price of $10.00 and consists of one Class A ordinary share and one-fifth of one redeemable warrant.
6Months to complete: 0001193125-21-092768If we have not consummated an initial business combination within 24 months, or 30 months from the closing of this offering if we have executed a letter of intent, agreement in principle or definitive agreement for an initial business combination

Each quote is found word for word in the filing it cites. Where a figure here differs from the filing, the filing prevails.

How the figures are compiled

Which IPOs. Every final IPO prospectus (Form 424B4 or 424B1, or a 424B3 when it is the first prospectus filed on an S-1 or F-1 registration within 10 days of it going effective) filed on SEC EDGAR from the history start, by a registrant whose SIC code was 6770 (blank checks) on the filing date. Offerings that are not exchange-listed SPAC IPOs are excluded when the prospectus is read. The window starts on 1 January 2021.
Dated by. The date of the final prospectus.
Raised. Units sold to the public, including over-allotment units, times the unit price, as stated in the SPAC's 8-K reports after the IPO.
Trust. The trust held for public shareholders after the IPO and any over-allotment: trust per unit times public units, as stated in the SPAC's filings. Cash deposited in trust and then moved out as working capital is not counted.
Bookrunners. Firms the prospectus names as book-running managers; where it names none, the firm it names as sole underwriter or representative of the underwriters. Only the prospectus's own wording counts, not later 8-K reports. Each IPO's gross proceeds are split equally among its bookrunners.
Counsel and auditors. Issuer counsel and underwriters' counsel as named in the prospectus's Legal Matters section; the auditor as named in its Experts section. Each is credited with the IPO's full gross proceeds.
Unit structure. What one unit consists of, as the prospectus states it: a share with warrants, with rights, with both, or a share alone (shares-only offerings sell no units). Warrants per unit is the fraction of a warrant in each unit; rights are measured as the fraction of a share they convert into per unit.
Trust per unit. Dollars placed in the trust account for each unit sold to the public, as the prospectus states it.
Time to complete. Months from the IPO closing that the SPAC has to complete its business combination before any extension, as the prospectus states it.
Over-allotment. Whether the underwriters bought all, part or none of the over-allotment option, comparing units sold with the base offering and the option.
Votes. Shareholder votes to extend a SPAC's deadline or to approve its business combination, as reported in its 8-Ks (Item 5.07), for the SPACs in the IPO statistics only: SPACs that priced before the history start are not included, so votes in the first years under-represent the market. Only redemptions actually paid count: votes on a proposal that failed, or an extension that was approved but never took effect, are left out (redemption requests lapse with them), and a merger vote counts only when the deal closed, and only the last merger vote before the closing, since merger redemptions are paid at closing. Liquidation votes are left out too, as every public share is redeemed by definition.
Redemption rate. Public shares redeemed at a vote over public shares outstanding just before it. Shares redeemed are as an 8-K, or failing that the next 10-Q or 10-K, states them. Shares before are as a filing states them, or redeemed plus the shares left after, or carried from the IPO's public shares and earlier votes. The median is the typical vote; the weighted rate divides all shares redeemed by all shares before, the share of public money that left the trusts. A vote counts only when each of these figures is verified or accepted. Votes whose redemption count no filing states, after a search of the SPAC's and the combined company's filings, are counted as not disclosed rather than estimated.
Outcomes. Where each SPAC stands as of the snapshot: completed (business combination closed), liquidated (trust returned and redeemed), deal pending (agreement signed, not closed) or searching (no agreement in force). Grouped by the year the SPAC priced its IPO. Awaiting review means its status is still being checked.
Closings. Completed business combinations by year of closing. The sector is the SEC's industry code (SIC) of the combined company, grouped into broad sectors; months from IPO run from the prospectus date to the closing.
Checking. A SPAC counts only when every required figure is verified (quote found verbatim in the filing and all cross-checks pass) or accepted by a named reviewer.
Coverage. 1,077 of the 1,089 SPAC IPOs read are counted; 12 wait on a figure still under review and 11 filings were excluded as not exchange-listed SPAC IPOs.

Compiled from SEC filings with the assistance of AI · figures as of 3 November 2026

For information only. These figures are compiled from SEC filings with the assistance of AI. Although they are checked against those filings, they may contain errors or omissions and have not been audited; where they differ from the filings, the filings prevail. They are not an offer to sell, a solicitation of an offer to buy, or a recommendation of any security. Information about any SPAC is qualified in its entirety by its filings with the SEC, available at www.sec.gov.

Larger than 75% of 2021’s SPAC IPOs.

88% of public shares redeemed across 1 vote.

Closed its merger 16 months after its IPO.