Compliance obligations

Section 16 and Form 4 reporting: what every 10b5-1 plan trade triggers.

Adopting a 10b5-1 plan does not reduce or eliminate your Section 16 disclosure obligations. Every sale that executes under the plan is a reportable transaction. Form 4 must be filed with the SEC within two business days of each trade, and the plan structure itself creates additional company-level disclosure requirements under the 2022 SEC amendments.

Who is a Section 16 insider

Section 16 of the Securities Exchange Act of 1934 covers three categories of insiders at public companies:

• Directors — members of the board, regardless of whether they are also officers.
• Executive officers — the president, any vice president in charge of a principal business unit, division, or function, the principal financial officer, the principal accounting officer, and other officers who perform a policy-making function.
• 10% beneficial owners — any person or entity directly or indirectly owning more than 10% of any registered equity class.

Most readers of this page are in the first two categories. If you are a named executive officer, a director, or a vice president with functional responsibility, Section 16 applies to your trades.

Form 4: the 2-business-day deadline

Section 16(a) requires that every transaction in company securities — including open-market sales, plan-triggered sales, option exercises, RSU vestings, and gifted shares — be reported on Form 4 filed with the SEC no later than the end of the second business day after the transaction date.¹

Director and officer certification at plan adoption

Under the SEC's 2022 amendments to Rule 10b5-1 (Release 33-11138, effective February 27, 2023), directors and officers must include representations in each plan certifying at the time of adoption that:²

• They are not aware of any material nonpublic information about the issuer or its securities.
• They are adopting the plan in good faith and not as part of a plan or scheme to evade the prohibitions of Rule 10b-5.

This certification is embedded in the plan document itself, not filed separately with the SEC. Your issuer's legal team and broker will typically require it as part of their pre-adoption review.

What the company must disclose quarterly

The 2022 amendments added Item 408(d) to Regulation S-K, which requires public companies to disclose in each quarterly Form 10-Q and annual Form 10-K:

• Whether any director or officer adopted or terminated a Rule 10b5-1 plan during the quarter.
• The material terms of each such plan — except pricing terms — including the date of adoption, duration, and aggregate number of shares to be sold or purchased.
• Whether any director or officer entered into or terminated a non-Rule 10b5-1 trading arrangement.

This means your plan adoption will appear in public company filings shortly after the quarter ends. The disclosure is the company's obligation, not yours, but you should be aware that the fact of your plan — and its general terms — will be publicly visible to investors. Some executives choose to adopt plans in open windows partly because adoption timing itself can be scrutinized after the fact.

Section 16(b): short-swing profit liability

Section 16(b) requires disgorgement of any profit from any purchase and sale — or sale and purchase — of company equity that occurs within six months, if you are a Section 16 insider. The company (or a shareholder suing derivatively) can recover those profits regardless of intent or whether the trade was made under a 10b5-1 plan.

Plan design implication

Executives who exercise options, receive RSU vests, or participate in ESPP purchases should coordinate those acquisition dates with planned 10b5-1 sales. If a sale on day 1 is matched against an acquisition on day 175 — within the 6-month window — the Section 16(b) profit calculation can apply. This is a reason to involve counsel in the plan structure before adoption, not just in the compliance review of plan documents.

Reporting timeline at a glance

Coordination that falls to the advisor

Securities counsel handles Form 4 filings and Section 16(b) analysis. The advisor's job is to build the financial inputs — sale cadence, lot selection, exercise timing, estimated tax payments, and concentration targets — that are then handed off to counsel and broker before the plan documents are finalized.

A common failure mode is coordinating the 10b5-1 plan in isolation from upcoming equity events (option expirations, RSU vestings, ESPP purchases). If those acquisitions fall inside a 6-month window relative to plan sales, the 16(b) exposure may be avoidable with timing adjustments — but only if the advisor and counsel reviewed the calendar before adoption.

For more on the broader rule framework, read the 10b5-1 plan rules overview and the pre-adoption checklist. For equity-type details, see the guide on RSUs, NQSOs, and ISOs inside a 10b5-1 plan.