A controlling shareholder sends your board a buyout offer on a Friday afternoon. Three of your nine directors have ties to that shareholder. By Monday, someone has to decide who negotiates, who sees the bankers’ materials and who stays out of the room.
That call usually lands on the General Counsel or the Corporate Secretary. And the answer is very often an ad hoc committee.
This guide covers what an ad hoc committee is, when it’s worth forming one, how it compares with your standing committees, and how to form, run and close one so the record holds up when someone examines it later.
In short
- An ad hoc committee is a temporary board committee created by resolution for one defined matter.
- It ends when the mandate is complete or on a set end date.
- Typical triggers: conflicted transactions, internal investigations, CEO succession and crises.
- Its power comes from the resolution that creates it, within the limits of state corporate law.
- The resolution, the independence screen and the closing record matter as much as the work itself.
What is an ad hoc committee?
An ad hoc committee is a temporary committee of the board of directors, formed by a board resolution to handle a single, defined matter and dissolved once that matter is resolved. “Ad hoc” is Latin for “for this purpose.” US corporate lawyers usually call it a special committee, and you’ll sometimes see “select committee” too.
The National Association of Corporate Directors (NACD) describes special committees as temporary structures made up of existing board members. Their job is to supplement the standing committees with concentrated expertise and independent review on one specific matter.
Four traits define it:
- One mandate: It exists for a named purpose.
- A defined end: It dissolves when the work is done or on a set date.
- Delegated authority: It can do only what the board resolution allows.
- Hand-picked members: Directors are chosen for their independence or expertise on this issue.
Ad hoc committee vs. standing committee
Your standing committees (audit, compensation, nominating and governance) run on a charter and an annual calendar. They meet whether or not anything unusual happens. An ad hoc committee exists because something unusual did happen.
For a full breakdown of what each permanent committee owns, see our guide to how standing board committees are structured. The comparison below covers what changes when the committee is temporary.
| Ad hoc committee | Standing committee | |
|---|---|---|
| Purpose | One defined matter | Ongoing oversight of a domain |
| Duration | Temporary, ends with the mandate | Permanent |
| Source of authority | A specific board resolution | Charter, bylaws and, for listed companies, exchange rules |
| Members | Chosen for independence or expertise on the issue | Set by charter and listing standards |
| Meeting rhythm | As often as the matter demands | Fixed annual calendar |
| How it ends | Closing resolution or sunset date | Continues until the board changes its structure |
The practical difference is the playbook. A standing committee already has one. An ad hoc committee has to write its own in days, often under deal or regulatory pressure, which is why the formation steps below carry so much weight.
When should a board form an ad hoc committee?
NACD lists mergers, acquisitions, buyouts, crises, litigation, CEO succession and internal investigations as situations that may warrant a special committee. It also points to cases where existing board structures can’t absorb the workload, or where a conflict of interest is present. In practice, the triggers fall into four groups.
Conflicted transactions and M&A
When a controlling shareholder, a director or a member of senior management sits on the other side of a deal, the board needs a group of directors with no stake in the outcome. That committee negotiates, hires its own advisors and recommends the transaction (or approves it, if the board delegated that power).
Timing matters here. Courts reviewing conflicted deals tend to ask when the committee was formed and what it could actually do. A committee set up after the key terms were agreed is much harder to defend than one that was in place from the first serious conversation.
Internal investigations
A whistleblower report implicates the CFO. The audit committee would normally take it, but one of its members worked closely with the CFO for years. An ad hoc committee with its own independent counsel keeps the investigation credible in front of auditors, regulators and shareholders.
CEO succession and executive search
An unplanned CEO departure calls for a search group that can move fast, interview candidates confidentially and bring one recommendation to the full board. Some companies hand this to the nominating and governance committee. Others prefer a dedicated committee because the work is short, intense and very confidential.
Crises and one-off strategic reviews
A major cyber incident. A regulatory inquiry. Financial distress or a review of whether to sell a division. Each needs concentrated director time over weeks, which a slot on the quarterly agenda can’t provide.
When you don’t need one
Some conflicts don’t call for a new committee. If one director has a personal interest in a single contract, recusal from that discussion and vote is often enough. If the matter sits squarely within an existing committee’s charter and its members are independent of the matter, use the committee you already have.
Each new committee adds meetings, paperwork and often fees. Form one when independence or focus genuinely requires it.
How to form an ad hoc committee in 5 steps
Most of the legal risk sits in how the committee is formed. A vague mandate or a conflicted member can undo months of careful work.
Step 1: Draft the board resolution
In Delaware, Section 141(c) of the General Corporation Law lets the board designate committees of one or more directors, with whatever powers the board resolution or the bylaws provide. The same section sets hard limits. A committee can’t approve or recommend to stockholders any matter that requires their approval (other than electing or removing directors), and it can’t adopt, amend or repeal bylaws. If you’re incorporated elsewhere, check your state statute and your own bylaws.
Your resolution should state:
- The committee’s name and specific purpose
- Its members and its chair
- Whether it is advisory or can decide and bind the company
- Its power to hire independent legal, financial or other advisors at the company’s expense
- How and how often it reports to the full board
- Confidentiality rules, including what conflicted directors may and may not receive
- How it ends: completion of the mandate, a sunset date, or both
Our guide to drafting a corporate resolution covers wording and structure if you want a refresher before you start.
Step 2: Choose members and screen for independence
Pick directors with no financial, personal or professional interest in the matter. Then document the screen: a short questionnaire on relationships with the counterparty, management and the proposed advisors, filed with the committee’s records.
Three members often work well. It’s enough to share the load and small enough to meet on short notice. If the committee will exercise board authority, its members must be directors. Outside experts can still attend as advisors, without a vote.
Step 3: Set scope, authority and reporting lines
Write down what the committee can do on its own and what goes back to the full board. Can it reject a deal outright? Approach other bidders? Remove an executive? Any ambiguity here is exactly what opposing counsel will look for later.
Agree on a reporting rhythm at the same time: a short update at each regular board meeting, then a final report.
Step 4: Run the committee and document everything
Treat each committee meeting like a full board meeting. Send notice and an agenda, confirm quorum and keep board meeting minutes that record who attended, which advisors presented, what was considered and how members voted.
Two habits pay off when the committee’s work is reviewed:
- Keep materials away from conflicted directors and management, and make sure you can show you did.
- Record the deliberation, not just the outcome. “The committee approved the transaction” carries little weight next to minutes showing the alternatives it weighed and the advice it received.
Agree with counsel early on how the minutes will reflect privileged legal advice.
Step 5: Close the committee formally
Committees that never formally end cause quiet problems. Nobody is sure whether the mandate is still live, fees may keep accruing and the records end up scattered across inboxes.
Close it out with:
- A final report to the full board
- A board resolution accepting the report and dissolving the committee, unless the original sunset clause has already dissolved it
- A complete, indexed file of minutes, materials and advisor reports, archived under your retention policy
What authority does an ad hoc committee have?
An ad hoc committee has exactly the authority the board resolution gives it, within the limits of state law. Boards generally choose between two models:
- Advisory: The committee investigates and recommends, and the full board decides. Common for strategic reviews and executive searches.
- Delegated: The committee acts for the board on the matter: it negotiates, approves or rejects. Common for conflicted transactions, where the whole point is to keep conflicted directors out of the decision.
Even with full delegation, the full board still oversees the committee’s work. Delegating a decision doesn’t remove the board’s accountability for how it established the committee.
Common mistakes with ad hoc committees
The same few errors recur:
- Forming the committee after management has already shaped the deal
- Writing a mandate so broad it drifts into standing committee territory
- Appointing a director whose relationship with the counterparty was never disclosed
- Sending committee materials through the general board email list
- Never formally dissolving the committee
Almost all of these are process failures. That’s good news, because process is the part you control.
How to keep an ad hoc committee’s work confidential and on record
Picture the committee from the opening example, three weeks in. The bankers’ fairness analysis has to reach three directors and nobody else. A month later the committee reports back to the full board. Two years after that, an auditor asks when exactly the committee was dissolved.
If the answers live in email threads and personal drives, every one of those moments is a risk. With DiliTrust Board Portal, each board or committee works in its own Room, so a temporary committee gets a dedicated, access-controlled space from its first meeting.
- Access you can show: “Nobody except” access rules, set per user or team, keep documents, folders, votes and polls visible only to the people you name. Conflicted directors don’t receive materials they shouldn’t see.
- Meetings prepared from a template: Agenda and attached documents are compiled into a single meeting bundle PDF for members.
- Votes in or outside meetings: The committee can decide between scheduled sessions when the deal timeline demands it.
- Minutes drafted faster: Lini, DiliTrust’s AI assistant, drafts minutes in a format you can define per committee. An authorized person reviews and validates every draft before it counts.
When the committee reports back, Circulate Information copies or syncs agenda items and their documents from the committee’s Room into the full board’s Room. The board sees the final recommendation without anyone re-uploading files or forwarding attachments.
For the long-term record, DiliTrust Entity Management lets you register the committee with a creation date and an end date. Once the end date passes, the committee and its members’ mandates are marked “Ended,” so the auditor’s question gets an answer in seconds.
See how a committee Room works in practice. Request a Board Portal demo
Frequently asked questions
Quick answers to the questions that tend to come up once a special committee is on the table.
What is the purpose of an ad hoc committee?
An ad hoc committee gives the board focused, often independent attention on one matter that the full board or its standing committees can’t handle well. Typical cases are conflicted transactions, internal investigations, CEO searches and crises. It works the issue, then reports or decides, and dissolves.
How long does an ad hoc committee last?
As long as its mandate requires. Some last a few weeks, such as a crisis response. Others run for many months, such as a contested acquisition. Best practice is to set the end condition in the resolution that creates the committee, through a completion trigger, a sunset date or both.
Who appoints ad hoc committee members?
The board of directors appoints members by resolution, usually on the recommendation of the board chair, the lead independent director or the General Counsel. For conflicted matters, members should be independent and disinterested, and the screening process should be documented.
Is a special committee the same as an ad hoc committee?
Yes, in corporate practice the terms are used interchangeably. “Special committee” is the more common term in US corporate law and M&A, while “ad hoc committee” is more common in general governance and in parliamentary procedure such as Robert’s Rules of Order.
Can non-directors serve on an ad hoc committee?
If the committee exercises board authority, its members must be directors under statutes such as Delaware’s Section 141(c). Non-directors, including lawyers, bankers or industry experts, can attend as advisors without a vote. Purely advisory groups set up by management fall outside this rule.
Does an ad hoc committee need to keep minutes?
Yes. Minutes are the main evidence that the committee met, considered the right information and acted independently. Keep them as carefully as full board minutes, restrict access for conflicted directors and archive them when the committee is dissolved.
Form it early, scope it tightly, close it on the record
An ad hoc committee is one of the most useful tools a board has, and one of the easiest to get wrong. Most of its value is decided before the first meeting: who sits on it, what the resolution allows and when it ends.
Get those three right, keep the materials where only members can reach them, and close the file formally. That’s the version that holds up when a court, an auditor or a shareholder comes asking.
Ready to give your next special committee a secure space from day one?
