Business Hours of the Commission
SEC Rule 110, codified at 17 C.F.R. § 230.110 under the Securities Act of 1933, establishes the operating hours of the Commission's principal office for purposes of receiving filings and conducting business under the Securities Act, distinguishing between the Commission's general office hours, the hours during which paper submissions may be made, and the hours during which electronic filings made by direct transmission may be submitted.
Though narrow and purely administrative in its content, Rule 110 performs an essential operational function within the Securities Act's regulatory architecture: it establishes the precise temporal boundaries within which a filing is deemed timely submitted, a question of considerable practical consequence for registrants, underwriters, and selling securityholders whose substantive rights and obligations — including the timing of effectiveness under Rule 461, the deadlines for free writing prospectus filings under Rule 433, and the reporting deadlines for resales of restricted securities under Rule 144 — depend on a filing having reached the Commission within the time period that Rule 110 defines as the Commission's business hours.
Overview and Regulatory Purpose
Every regulatory filing system that imposes deadlines must define, with precision, the period during which a filing submitted on the deadline date will be considered timely. Without such a definition, disputes would inevitably arise about whether a document submitted at, for example, 11:45 p.m. on the deadline date was filed on that date or the following date, and whether a paper document delivered to the Commission's offices after standard business hours had closed was timely received.
Rule 110 eliminates this uncertainty by establishing clear, hour-specific windows during which filings of different types — general business correspondence, paper submissions, and electronic filings made by direct transmission — are received by the Commission and deemed filed on the date of submission.
The practical significance of Rule 110's precision has grown substantially as the Commission's filing infrastructure has shifted from an exclusively paper-based system to one dominated by electronic submission through EDGAR. In the paper-filing era, the Commission's business hours were primarily relevant to determining whether a courier-delivered document reached the Commission's offices before the close of business on the filing deadline. In the modern electronic filing environment, Rule 110's direct transmission window — extending from 6:00 a.m. to 10:00 p.m.
Eastern Time — governs the much larger volume of registration statements, periodic reports, and other required filings that registrants submit electronically through EDGAR, making the precise boundaries of that window a matter of continuing practical importance for filers managing time-sensitive transactions.
Statutory Authority and Rulemaking History
Rule 110 derives its statutory authority from Section 19(a) of the Securities Act of 1933, which authorises the Commission to make, amend, and rescind such rules and regulations as may be necessary to carry out the provisions of the Act. The Commission's authority to establish its own operating hours and the windows during which filings will be received is an inherent administrative function necessary to the orderly conduct of the Commission's regulatory responsibilities under the Act.
Rule 110 has existed since the Commission's earliest codification of its General Rules and Regulations under the Securities Act, with its substantive content — the distinction between general office hours, paper submission hours, and electronic transmission hours — evolving as the Commission's filing infrastructure modernised over subsequent decades.
The most recent amendment to Rule 110 was adopted March 20, 2023, in Securities Act Release No. 33-11159, which the Commission issued in connection with its broader rulemaking extending the EDGAR electronic filing mandate to Form 144.
That rulemaking required electronic filing of Form 144 — the form used by affiliates to report proposed resales of restricted or control securities under Rule 144 — for sales occurring on or after April 13, 2023, ending decades of permissible paper-based Form 144 submission.
In adopting the Form 144 EDGAR mandate, the Commission identified and corrected technical errors in three parallel general rules across the federal securities statutes: Rule 110(c) under the Securities Act, Rule 0-2(c) under the Securities Exchange Act of 1934, and Rule 0-5(c) under the Trust Indenture Act of 1939.
Each of these provisions governs the hours during which filings made by direct transmission may be submitted to the Commission, and the Commission determined that the existing text of all three provisions contained errors regarding the applicable time window that were inconsistent with Rule 12(c) of Regulation S-T and Section 2.3.1 of the EDGAR Filer Manual — the governing authorities for electronic filing mechanics. The March 2023 amendment harmonised Rule 110(c)'s text with the EDGAR filing window that Regulation S-T and the EDGAR Filer Manual actually establish, ensuring that the Securities Act's own general rule accurately reflects the electronic filing infrastructure's operative parameters.
Key Provisions and Operative Requirements
Rule 110(a) establishes the Commission's general office hours. The principal office of the Commission, located at 100 F Street NE, Washington, D.C. 20549, is open each day, except Saturdays, Sundays, and federal holidays, from 9:00 a.m. to 5:30 p.m. Eastern Standard Time or Eastern Daylight Saving Time, whichever is currently in effect.
This general office hours provision establishes the baseline operating schedule for the Commission's headquarters, subject to the more specific filing windows established in Rule 110(b) and (c) for documents submitted pursuant to the Securities Act or its rules and regulations.
Rule 110(b) establishes the window for paper submissions. Paper documents filed with or otherwise furnished to the Commission may be submitted each day, except Saturdays, Sundays, and federal holidays, from 8:00 a.m. to 5:30 p.m. Eastern Standard Time or Eastern Daylight Saving Time, whichever is currently in effect.
This paper submission window begins one hour earlier than the Commission's general office hours under Rule 110(a), accommodating filers who deliver paper documents to the Commission's offices before the general public-facing business hours commence.
Although the volume of paper filings under the Securities Act has diminished dramatically with the comprehensive expansion of mandatory electronic filing, certain categories of document — including specific exhibits, confidential treatment requests, and limited categories of correspondence not subject to the electronic filing mandate — may still be submitted in paper format within this window.
Rule 110(c) establishes the window for filings made by direct transmission — the provision governing the timing of electronic filings submitted through EDGAR. As corrected by the March 2023 amendment, filings made by direct transmission may be submitted to the Commission each day, except Saturdays, Sundays, and federal holidays, from 6:00 a.m. to 10:00 p.m.
Eastern Standard Time or Eastern Daylight Saving Time, whichever is currently in effect. A filing transmitted within this sixteen-hour window is deemed filed on the date of transmission; a filing transmitted after 10:00 p.m. is deemed filed on the next business day. This direct transmission window is conformed to the parallel filing window established by Rule 12(c) of Regulation S-T and Section 2.3.1 of the EDGAR Filer Manual — the technical specifications governing the EDGAR system's operation — ensuring that Rule 110's general statement of the Commission's filing hours accurately reflects the actual operative parameters of the electronic filing infrastructure that the overwhelming majority of Securities Act filers now use.
The practical consequence of the direct transmission window's boundaries is considerable for registrants managing time-sensitive transactions. A registration statement, a free writing prospectus required to be filed under Rule 433, or a Form 144 reporting a proposed resale under Rule 144 that is transmitted to EDGAR before 10:00 p.m.
Eastern Time on the applicable deadline date is timely filed on that date; a transmission occurring even minutes after 10:00 p.m. is treated as filed on the following business day, with potentially significant consequences for compliance with the specific deadline the underlying rule imposes. Practitioners managing offerings with same-day pricing and effectiveness requirements — particularly in the shelf takedown context governed by Rule 415 and the prospectus supplement filing deadlines of Rule 424(b) — must structure their internal filing processes to ensure submission well within Rule 110(c)'s window, since EDGAR system capacity, technical difficulties, or last-minute drafting changes can consume the available time margin unexpectedly.
Scope of Application
Rule 110 applies to all filings made with the Commission pursuant to the Securities Act of 1933 and its rules and regulations, encompassing registration statements filed on every available form, periodic and current reports to the extent filed under Securities Act authority, free writing prospectuses filed pursuant to Rule 433, Form 144 filings reporting proposed resales of restricted and control securities under Rule 144, and the full range of other documents that registrants, underwriters, and selling securityholders submit to the Commission in connection with registered and exempt securities offerings.
The rule's three-tiered structure — general office hours, paper submission hours, and direct transmission hours — applies uniformly regardless of the specific type of filing being made, though the practical relevance of each tier varies considerably depending on the filing method employed. For the overwhelming majority of contemporary Securities Act filings, which are submitted electronically through EDGAR, Rule 110(c)'s direct transmission window is the operative provision determining timeliness.
Relationship to Related Rules and Regulations
Rule 110's direct transmission window is directly governed by, and conformed to, Regulation S-T's Rule 12(c) — the provision of the Commission's electronic filing regulation that establishes the technical parameters for EDGAR submission timing. Regulation S-T, codified at Part 232 of Title 17, comprehensively governs the preparation and submission of documents in electronic format across the Commission's regulatory programmes, and Rule 110(c)'s cross-reference to Regulation S-T's filing window ensures that the general administrative provisions of the Securities Act rules remain consistent with the operative electronic filing infrastructure that Regulation S-T establishes.
Rule 110's filing hours interact directly with the time-sensitive deadlines established throughout the Securities Act rules. Rule 461's acceleration of effectiveness framework depends on the precise timing of pre-effective amendments and acceleration requests, which must be submitted within Rule 110's applicable filing windows to be considered timely for purposes of the Commission's acceleration decision. Rule 433's filing requirements for free writing prospectuses — which generally require filing on the date of first use — depend on Rule 110's filing windows to determine whether a same-day filing has been timely accomplished. Rule 144's reporting obligations, now requiring electronic filing of Form 144 on EDGAR following the 2023 mandate that prompted Rule 110(c)'s correction, depend on the same direct transmission window to determine the timeliness of the affiliate's resale notice.
The parallel corrections made simultaneously to Exchange Act Rule 0-2(c) and Trust Indenture Act Rule 0-5(c) in the same 2023 rulemaking confirm that Rule 110's filing hours framework is part of a coordinated administrative structure spanning all three of the principal federal securities statutes administered by the Commission, ensuring that filers navigating obligations under the Securities Act, the Exchange Act, and the Trust Indenture Act encounter consistent filing hour rules across each statutory framework.
Amendment History and Regulatory Evolution
Rule 110's evolution reflects the Commission's progressive accommodation of, and eventual near-total transition to, electronic filing as the dominant mode of Securities Act compliance. The rule's original paper-era framework — addressing only the Commission's general office hours and the hours during which paper documents could be submitted — was supplemented with the direct transmission provision of Rule 110(c) as EDGAR became operational and progressively mandatory across the Commission's filer population beginning in the late 1980s and continuing through subsequent decades of phased implementation.
The March 2023 amendment's correction of Rule 110(c)'s text was a technical rather than substantive change — it did not alter the actual electronic filing window that EDGAR has long operated under pursuant to Regulation S-T, but corrected an inconsistency between Rule 110(c)'s stated text and the governing electronic filing parameters.
This correction was prompted directly by the Commission's contemporaneous adoption of the Form 144 EDGAR mandate, which brought a previously paper-only filing fully within the electronic filing framework and required the Commission to ensure that all of its general rules governing electronic filing timing were internally consistent and accurately stated.
Enforcement Context and SEC Action Patterns
Rule 110 itself generates no independent enforcement activity in the manner of substantive disclosure or registration rules, since it imposes no disclosure obligation or registration requirement that could itself be violated. Its practical significance arises in the context of disputes or compliance questions about whether a specific filing was timely made for purposes of a substantive deadline established elsewhere in the Securities Act rules — for example, whether a Form 144 transmitted shortly before or after the 10:00 p.m. direct transmission cutoff was filed on the intended date, or whether a free writing prospectus required to be filed on the date of first use under Rule 433 was timely submitted within the applicable filing window.
The Division of Corporation Finance and the EDGAR Filer Support staff address practical questions about filing timing and the operation of Rule 110's windows through informal guidance and the EDGAR Filer Manual, which provides detailed technical specifications for electronic submission that filers rely upon in managing time-sensitive filings, particularly in the context of underwritten offerings where same-day pricing, effectiveness, and prospectus filing deadlines under Rules 424(b), 433, and 461 must all be coordinated within the available filing windows.
Examination Relevance and Key Takeaways
Rule 110 is examined at the Series 7 and Series 65 levels as background context for understanding the procedural mechanics of Securities Act compliance and the practical operation of filing deadlines throughout the registered offering process.
Candidates should understand the basic distinction between the Commission's general office hours under Rule 110(a), the paper submission window under Rule 110(b), and the direct transmission window under Rule 110(c) — and the practical reality that the direct transmission window, extending from 6:00 a.m. to 10:00 p.m. Eastern Time, governs the timing of the great majority of contemporary Securities Act filings submitted through EDGAR.
The interaction between Rule 110's filing windows and the specific deadlines imposed by substantive rules — including Rule 433's same-day free writing prospectus filing requirement, Rule 144's Form 144 reporting obligation, and Rule 461's acceleration of effectiveness procedures — is useful examination context for understanding how the procedural mechanics of Commission filing interact with the substantive compliance obligations that the Securities Act rules impose.
The key points to retain are these. Rule 110 establishes the Commission's business hours for purposes of receiving and processing filings under the Securities Act. General office hours run from 9:00 a.m. to 5:30 p.m. Eastern Time. Paper submissions may be made from 8:00 a.m. to 5:30 p.m. Eastern Time.
Filings made by direct transmission — the EDGAR electronic filing channel used for the overwhelming majority of contemporary Securities Act filings — may be submitted from 6:00 a.m. to 10:00 p.m. Eastern Time, with filings transmitted after that window deemed filed on the next business day. Rule 110(c)'s direct transmission window is conformed to Regulation S-T's Rule 12(c) and the EDGAR Filer Manual.
The rule was last amended March 20, 2023 to correct a technical inconsistency in the direct transmission window's text, adopted in connection with the Commission's mandate requiring electronic filing of Form 144 on EDGAR for resales occurring on or after April 13, 2023. No further amendments are pending through June 2026.
