Shareholder Activism and Proxy Contests: 13D Groups, Universal Proxy, and Board Defense

Document type: Article Practice area: Corporate — Governance Jurisdiction: United States (federal and state) Last reviewed: 5 September 2026

The argument, and who is really being persuaded

An activist campaign looks like a fight between a fund and a board. It is not. It is an argument conducted in front of the institutional shareholders who actually own the company, and both sides are addressing them.

That framing resolves most tactical questions. Whether to respond publicly to a letter, whether to add a director, whether to settle, whether to run the contest — each is answered by asking what the top twenty holders will think, not by what feels proportionate.

And the audience has usually made up its mind before the proxy is mailed. Institutional investors form views from the company's performance, its governance, and — critically — from the relationship the company has built with them over the preceding years. A company whose investor relations consist of a quarterly earnings call meets an activist campaign as a stranger.

The first warning: beneficial ownership reporting

Schedule 13D. Under Section 13(d) of the Exchange Act, 15 U.S.C. § 78m(d), a person who acquires beneficial ownership of more than five percent of a registered class must file a statement disclosing the acquisition, the source of funds, and — the part that matters — the purpose of the transaction, including any plans or proposals relating to an extraordinary transaction, a sale of assets, a change in the board or management, a change in the charter or bylaws, or delisting.

The filing deadlines were shortened by rule amendments, reducing the window between crossing the threshold and public disclosure, and requiring more prompt amendments on material changes. Confirm the current deadlines; they have moved.

Schedule 13G is the short-form alternative for qualified institutional investors and passive investors holding without a purpose or effect of changing or influencing control. An activist that files 13G and then behaves like an activist has a problem, and the transition from 13G to 13D is itself a signal the company should be watching for.

Derivatives and the economic exposure question. Cash-settled equity swaps and similar instruments give economic exposure without voting power, and the rules addressing when such instruments confer beneficial ownership have been the subject of amendment and litigation. Assume an activist's economic position may exceed its reported share position, and that the counterparties holding the hedge are a source of votes.

Section 16 at 15 U.S.C. § 78p adds reporting and short-swing profit exposure for ten percent holders, which shapes activist position sizing more than companies realize.

The group question

This is the issue that decides cases. Under § 13(d)(3), when two or more persons act as a partnership, limited partnership, syndicate, or other group for the purpose of acquiring, holding, or disposing of securities, the group is treated as a single "person" — with the consequence that the group's combined holdings determine whether the five percent threshold was crossed and when disclosure was required.

Why it matters commercially. A "wolf pack" — several funds accumulating in parallel, in communication with one another, none individually above the threshold — can assemble a substantial position before any disclosure obligation arises, if they are not a group. If they are, disclosure was required earlier, and every share purchased after the deadline was purchased in violation.

The line is genuinely contested. Parallel conduct is not a group; an agreement to act together is. Communications among funds about a company, absent an agreement to act in concert with respect to the securities, have been held insufficient — and the rules have been amended to address the circumstances in which coordinated conduct forms a group and how certain communications are treated. This is an area to research currently rather than from memory.

For a company, the practical response is surveillance: watch the trading, identify the accumulating holders, and — where the pattern suggests coordination — develop the record. For an activist, it is discipline about what is said to whom, because the group question is the most common basis for a company's litigation response.

Universal proxy changed the arithmetic

The single most consequential development in contested elections in a generation.

Before, a shareholder voting by proxy chose one card. The company's card listed the company's nominees; the dissident's card listed the dissident's. A holder could not mix — voting for two dissident nominees and the rest of the company's slate was impossible by proxy, though possible in person.

Now, the rules require that in a contested election each side's proxy card list all duly nominated candidates, company and dissident alike, so that shareholders may vote for any combination.

The consequences are structural.

It is easier to win one or two seats. A dissident no longer asks holders to replace a slate; it asks them to prefer a particular nominee. That is a far lower bar, and it has made short-slate campaigns more common and more successful.

Nominee quality matters more than the thesis. With mixing possible, holders evaluate individuals. A dissident with two credible, independent, relevantly experienced nominees is dangerous even where its strategic argument is weak — and a company whose own nominees include a long-tenured director with no relevant expertise has a vulnerability that did not previously matter.

The company must nominate carefully too. Every incumbent is now individually exposed, and the board should assess which of its own members would survive a head-to-head comparison.

And the procedural requirements are exacting — notice deadlines for the dissident, minimum solicitation thresholds, and formatting and reference requirements for the cards. A dissident that misses a requirement can be excluded; a company that mishandles one creates a fight it did not need.

A running example

Marlowe Industrial is a $2.4 billion market capitalization manufacturer of flow control equipment. Three business segments, one of which — an aftermarket services business — earns materially higher margins than the other two. Total shareholder return has trailed its peer group for three years. Its general counsel is Renata Achterberg-Nwosu.

Month 0. Stock surveillance flagged unusual volume and a pattern of accumulation across several accounts at the same prime broker.

Month 1. Harrowgate Capital filed a Schedule 13D under 15 U.S.C. § 78m(d) disclosing 6.4% and a purpose that included evaluating board composition and strategic alternatives. Two other funds had accumulated in parallel; each held just under five percent.

The group question. Achterberg-Nwosu's counsel developed the trading record. The three funds had bought in overlapping windows through the same broker, and two had appeared together at an industry conference. That was suspicious and it was not, by itself, an agreement to act in concert. The company preserved the analysis and did not sue — a decision that looked passive at the time and was correct: a group claim that fails publicly strengthens the activist.

Month 2. Harrowgate's letter argued the aftermarket segment was worth more separately, that capital allocation had destroyed value, and that the board had three directors with tenure over fifteen years and no relevant industrial experience.

Two of those three arguments were right. The board had run its own assessment eight months earlier — the practice recommended above — and had reached similar conclusions about tenure. It had not acted on them.

Month 3. Harrowgate nominated three directors under the advance notice bylaws, which the company had refreshed in an ordinary year two years before. The notice was compliant. Counsel reviewed it carefully and advised against rejection on a strained reading — the second most dangerous thing a company can do in a campaign.

Universal proxy changed the calculation. Under the old regime, Harrowgate would have needed shareholders to choose its card. Now holders could take one or two Harrowgate nominees and keep the rest of the board. Two of Harrowgate's three nominees were genuinely strong: a former divisional president of a larger competitor, and a capital allocation specialist. Against them, the company's fifteen-year director with a background in an unrelated industry was individually exposed.

Month 4 — the decision. The board asked the honest question: would we appoint these two people if Harrowgate did not exist? For the former divisional president, the answer was yes. For the third nominee — a Harrowgate partner — no.

Month 5 — settlement. One Harrowgate nominee appointed, one mutually agreed independent director added, two long-tenured directors not renominated, a strategic review of the aftermarket segment announced with a defined timetable, and a standstill running through the next nomination window with a voting commitment limited to director elections. Committee seats were the hardest term; the new directors joined the capital allocation committee.

Achterberg-Nwosu's assessment: "We had done the self-assessment and identified the same problems eight months earlier. We just hadn't acted. The campaign cost us about $4 million and a great deal of board time to do what our own analysis had already told us to do."

Advance notice bylaws: the terms of engagement

The bylaws determine when and how a dissident may nominate, and they are the company's most important structural defense — provided they were drafted before anyone needed them.

What they require. Notice of a nomination within a defined window before the anniversary of the prior annual meeting, containing prescribed information about the nominating holder and each nominee: ownership, including derivative and short positions; arrangements and understandings with others; the nominee's background, qualifications, and any compensation arrangement with the nominating holder; and representations about the holder's intent.

Why the disclosure requirements matter. "Golden leash" arrangements — third-party compensation paid to a nominee by the nominating fund — were once undisclosed and are now routinely required to be disclosed by bylaw. So are the derivative positions that reveal a holder's true economic exposure. A dissident whose economic interest is smaller or differently aligned than its share position suggests is a dissident whose thesis reads differently.

The limits. Bylaws must be reasonable in their requirements and cannot be used to make nomination practically impossible. Delaware courts have invalidated advance notice provisions that were unreasonable in scope or that were adopted or applied inequitably in the face of a specific threat — and a board that amends its bylaws on the eve of a nomination deadline invites exactly that challenge.

The practical instruction is timing. Review and update advance notice bylaws in an ordinary year, as part of routine governance maintenance, when no activist is present and the amendment attracts no attention. Amending them after a 13D is filed is a defensive measure evaluated as such.

And read them before the deadline. Companies have both accepted defective notices they could have rejected and rejected valid ones on strained readings — the second being far more dangerous, because a wrongly rejected nomination becomes litigation the company loses in public.

Defensive measures, and their constraints

The rights plan — the poison pill. A shareholder rights plan dilutes an acquirer that crosses a threshold, making accumulation beyond that point prohibitively expensive. Modern practice is to adopt a plan on the shelf, ready to be implemented, rather than to have one outstanding — because an outstanding plan draws governance criticism and proxy adviser opposition.

Thresholds have moved. Plans with low triggers, adopted rapidly in response to accumulation, have drawn judicial scrutiny in Delaware, and the analysis turns on the threat identified and the proportionality of the response. A plan aimed at a genuine creeping-control threat is defensible; one aimed at preventing a shareholder from advocating for change is on much weaker ground.

Delaware's framework applies enhanced scrutiny to defensive measures adopted in response to a perceived threat, asking whether the board identified a legitimate threat after reasonable investigation and whether the response was proportionate. And where a board acts for the primary purpose of interfering with the shareholder franchise, the standard is more demanding still — a compelling justification is required. That is why defensive measures aimed at the vote itself are the most dangerous ones a board can take.

What else is available: the staggered board where one exists; supermajority provisions; the elimination of written consent and of the shareholder-called special meeting; and — the most effective and least appreciated — performance.

And what is not available in practice. Moving the meeting date to disadvantage a dissident, refusing to count votes, adopting bylaws mid-contest to change the rules, or expanding the board to dilute a dissident's success. Each has been done, each has been litigated, and each has generally gone badly.

Settlement, which is how most campaigns end

The typical structure. The company appoints one or two directors — often one dissident nominee and one mutually agreed independent — in exchange for the dissident's agreement to withdraw its nomination and observe a standstill through a defined period.

The terms that matter:

Board composition. How many seats, who fills them, and whether the appointees join committees. Committee membership is frequently the real negotiation, because a director without a committee seat has limited influence.

The standstill. Duration; a prohibition on further nominations, proposals, and solicitations; a cap on share accumulation; and a prohibition on group formation with others. The duration is typically tied to the next nomination window.

Voting commitments. Whether the dissident must vote with the board's recommendations, and on what matters. A commitment covering director elections is ordinary; one covering all matters is aggressive and draws criticism.

Non-disparagement, mutual and time-limited.

Information rights for the new directors, and confidentiality obligations — including whether the appointed director may share information with the fund, which is the recurring conflict.

Termination and fall-away provisions, including what happens if the appointed director resigns or is not renominated.

Whether to settle is a business judgment, and the honest test is: would we appoint these people if the fund did not exist? A board that would benefit from the nominees should take them and stop spending; a board that would not should be prepared to run the contest, and should be confident it will win.

Running a contest

The proxy solicitation rules in Section 14(a), 15 U.S.C. § 78n(a), and the rules at 17 C.F.R. Part 240 govern what each side may say and how. Every communication to shareholders is a solicitation and must be filed, and the antifraud provision applicable to proxy solicitations reaches false or misleading statements of material fact.

Exempt solicitations permit a holder to communicate publicly without a full proxy statement in defined circumstances, and activists use them heavily — the public letter, the presentation deck, the website.

The proxy advisory firms matter enormously. Their recommendations move a meaningful share of institutional votes, and both sides engage them. Prepare for that engagement as seriously as for the largest holder meeting: the advisers are analytical, they read the record, and they are influenced by performance, governance, and the quality of the nominees rather than by rhetoric.

Institutional engagement is the core of the campaign. Meet the top holders, understand their concerns, and — critically — listen. Holders frequently tell a company exactly what would change their vote.

The retail vote is a real factor at companies with significant retail ownership, is expensive to reach, and is where the proxy solicitor earns its fee.

Litigation is common and rarely dispositive: challenges to the validity of a nomination notice, to 13D disclosure adequacy, to group formation, and to defensive measures. It shapes the narrative more than the outcome.

And the vote itself — inspectors of election, the treatment of broker non-votes, and the standard for election, which under a plurality standard in a contested election means the highest vote-getters win regardless of majority support.

Where the votes actually come from

A contested election is arithmetic, and companies routinely misjudge the arithmetic because they think about holders rather than about votes.

The index funds are usually the largest holders and they vote everything. Their decisions are made by governance teams applying published policies, not by portfolio managers, and those teams are reachable in ordinary years. They are analytical, they read the record, and they weigh performance, governance, and nominee quality.

The active managers are fewer, larger per position, and more likely to be persuaded by the strategic argument — in either direction.

The proxy advisory firms do not vote, but their recommendations move a meaningful share of institutional votes, particularly among smaller institutions that follow them closely. Both sides should engage them as seriously as they engage the largest holder, with a substantive submission rather than a pitch.

The retail base is expensive to reach, votes at a much lower rate, and — where it does vote — tends to support management. At companies with substantial retail ownership this is where the proxy solicitor earns its fee, and where a close contest is decided.

The brokers and the plumbing. Shares held in street name, the timing of the record date, the treatment of broker non-votes, and the ability of holders to change a previously submitted proxy all affect the outcome. In a close contest the mechanics matter as much as the merits.

The employee-held shares in plans, with their own voting arrangements and pass-through rules.

And the standard for election. Under a plurality standard in a contested election, the highest vote-getters win regardless of majority support — which is why the number of seats up matters so much and why a staggered board changes the calculation.

Build the vote model early, holder by holder, with an assessment of each large position's likely disposition and what would change it. That model is the campaign plan, and a company that has one runs a different campaign from one that is guessing.

Communications during a campaign

A proxy contest is fought largely through documents that shareholders read, and the communications discipline is as consequential as the legal strategy.

Everything is a solicitation. Under Section 14(a), 15 U.S.C. § 78n(a) and the rules at 17 C.F.R. Part 240, communications reasonably calculated to result in the procurement of a proxy are solicitations, must be filed, and are subject to the antifraud provision governing proxy materials. That reaches press releases, letters to shareholders, investor presentations, website content, and — a point companies forget — social media posts by executives.

Have one approval path. A named approver, a filing process, and a rule that nothing goes out without both. Campaigns generate pressure to respond quickly, and the unfiled response written at midnight is the one that creates a problem.

Substance beats tone. Institutional holders and the proxy advisers are analytical. A response that engages the activist's arguments with data — segment economics, the capital allocation record, the board's skills matrix — persuades. One that questions the activist's motives does not, and it signals that the company has no answer on the merits.

Never attack personally. It reads as entrenchment, it alienates holders who may agree with the activist's substance, and it is the single most common unforced error in these campaigns.

Correct errors, once and precisely. Where the activist's materials contain a factual error, correct it with the source. Do not litigate every characterization; the audience stops reading.

Coordinate with the employee, customer, and supplier messages. A campaign is public, and the company's other constituencies read it. A short, accurate internal message with a named contact prevents the speculation that follows silence.

Keep the record. Every communication, its approval, and its filing. If the adequacy of the disclosure is later challenged, the file is the answer.

What to tell the board

One: the audience is your own shareholders, not the activist. Every tactical question is answered by asking what the top twenty holders will think.

Two: universal proxy changed the arithmetic. Shareholders can now mix nominees, so winning one or two seats is far easier than it was, and every incumbent director is individually exposed. Ask which of your own directors would survive a head-to-head comparison.

Three: the group question is where the litigation is. Under 15 U.S.C. § 78m(d) and the group provision, coordinated accumulation may have required earlier disclosure — but parallel conduct is not a group, and a group claim that fails publicly strengthens the activist.

Four: your bylaws set the terms of engagement, and they must be updated in an ordinary year. Amending advance notice provisions after a 13D is filed is a defensive measure evaluated as such.

Five: defensive measures aimed at the vote itself are the most dangerous action available. Enhanced scrutiny applies to defensive measures generally, and interference with the shareholder franchise requires a compelling justification.

Six: most campaigns settle, and the honest test is whether you would appoint these nominees if the fund did not exist. If yes, take them and stop spending.

Seven: preparedness decides it. Know your register, run the activist's analysis on yourself annually, fix what it finds, and build institutional relationships in years when nothing is happening.

And eight, the uncomfortable one: activists are frequently right about something. A board that evaluates the argument rather than reflexively defending will make better decisions — and will meet the campaigns it does face with a record of having already addressed the strongest points.

Variants: the campaigns that are not proxy contests

Board seats are one instrument. Several others appear more often and are handled differently.

The private letter. Most engagement never becomes public. A fund writes to the chief executive or the lead director with a thesis and a request for a meeting. Take it seriously and answer it substantively. A dismissive response is the most reliable way to convert a private conversation into a public campaign, and the letter frequently contains the argument the company will later face in a proxy fight.

The shareholder proposal. A holder meeting the eligibility and procedural requirements may submit a proposal for inclusion in the company's proxy statement, subject to the substantive bases on which a company may seek to exclude it. Exclusion requires engaging the staff, and the calculus is whether the fight is worth more than the proposal costs — frequently it is not, and negotiated withdrawal in exchange for a commitment is the ordinary outcome.

The withhold or vote-no campaign. Rather than nominating, a holder urges shareholders to withhold from specific directors. There is no slate and no contest, and the cost to the activist is low. Under a majority voting standard in an uncontested election, a director receiving more withhold than for votes tenders a resignation the board must consider — which makes this a genuine threat rather than a symbolic one.

The books and records demand. A holder with a proper purpose may inspect specified corporate records, and activists use this to build a record before a campaign or a lawsuit. Respond carefully: over-refusal produces litigation the company frequently loses, and over-production hands the activist material for the campaign.

The public letter without a position. Some campaigns are run on very small stakes, relying on the argument rather than the votes. Assess the substance, not the size.

The say-on-pay campaign, targeting compensation rather than strategy, which is easier to win and frequently a precursor.

And the ESG- or policy-driven proposal, which is a different exercise from an economic activist campaign and requires a different response — engagement with the specific concern rather than a defense of performance.

Living with an activist director

Settlements put a new person in the boardroom, and the year that follows is managed badly more often than it is managed well.

Onboard them properly. The same orientation, the same materials, the same access as any new director. A company that treats an appointed director as an adversary to be contained creates the dysfunction it feared — and, if the relationship deteriorates publicly, hands the fund its next campaign.

Address the information question directly. The recurring conflict is whether the appointed director may share board information with the fund that nominated them. The settlement agreement should say. Where sharing is permitted, it is usually subject to confidentiality obligations binding the fund, and the fund's trading restrictions become an issue — a fund in possession of material non-public information cannot trade.

Watch the insider trading exposure. This is the practical constraint that surprises funds: a designee's knowledge may be attributed to the fund, and the fund's ability to trade the position is meaningfully limited. Some funds decline board seats for exactly this reason and take an observer role or a non-affiliated nominee instead.

Committee assignments. A director without a committee seat has limited influence, which is why committee membership is the hardest settlement term. Where the appointee joins a committee touching the fund's thesis — capital allocation, strategy, audit — expect the substantive argument to continue there.

Expect the argument to continue, and treat that as normal. A board that adds a director because a shareholder made a persuasive argument should expect that director to keep making it.

Track the standstill dates. The expiry, the next nomination window, and any fall-away triggers should be calendared, because the campaign resumes on the day the standstill ends unless something has changed.

And use the year. The company agreed to a strategic review, or a governance change, or a capital allocation shift. Execute it. The single most common cause of a second campaign is a company that settled the first one and did not do what it said it would.

The board's own duties during a campaign

A contested election is a period in which directors are simultaneously defendants in waiting and fiduciaries with a job to do.

The business judgment rule still applies to ordinary decisions, and the board should continue running the company — approving budgets, making capital allocation decisions, and pursuing the strategy — rather than freezing.

Defensive measures are different. A board that adopts a rights plan, amends bylaws, or takes other action in response to a perceived threat is subject to enhanced scrutiny under Delaware law: it must identify a legitimate threat after reasonable investigation and respond proportionately. Documenting the investigation — the advice received, the analysis considered, the alternatives weighed — is what makes the defense available.

Action affecting the vote is scrutinized most severely. Where a board acts for the primary purpose of impeding the shareholder franchise, a compelling justification is required, and that standard is rarely satisfied. Moving a meeting date, expanding a board mid-contest, or adopting bylaws that change the rules after a nomination are the recurring examples, and they generally go badly.

Independence and process. Where management's own position is at issue — and in most campaigns it is — the board should consider whether the response is being directed by the people whose jobs the activist has questioned. A committee of independent directors, with its own advisers, is frequently the right structure and is nearly always the right structure in a campaign that includes a call for a sale.

Minutes matter. The record of what the board considered, when, and on what advice is the document that will be produced. Minutes that record a decision without the deliberation are worse than useless.

And the conflicts are real. Directors facing individual non-renomination under universal proxy have a personal interest in the outcome; executives whose compensation or tenure is at issue have another. Name the conflicts, manage them, and record the management — because a plaintiff will find them if the company does not.

The activist's side

Campaigns are run by funds with their own constraints, and understanding them makes a company's response better.

Position building is the hard part. An activist must accumulate a meaningful stake without moving the price and without triggering disclosure prematurely. That shapes everything: the use of derivatives for economic exposure, the pace of accumulation, and the discipline about communications that could form a group under § 13(d)(3).

The economics. A campaign costs several million dollars in advisers, solicitation, and legal fees, borne by the fund and its investors. That is a rational expenditure only on a position large enough to justify it, which is why activists concentrate and why the position size tells you how serious the campaign is.

The thesis has to survive scrutiny. Institutional holders and the proxy advisers are analytical, and a thesis that rests on a superficial comparison or a sum-of-the-parts calculation that ignores separation costs will be tested. The campaigns that succeed identify something the company's own management would concede privately.

Nominee selection is now the central strategic decision. Under universal proxy, holders evaluate individuals. Two credible, independent, relevantly experienced nominees are more dangerous than five loyalists, and an activist that nominates its own partners has weakened its case.

The regulatory constraints are real. Solicitation rules under § 14(a) and 17 C.F.R. Part 240 govern every communication; the antifraud provision applies; exempt solicitations have conditions; Section 16 exposure at 15 U.S.C. § 78p shapes position sizing above ten percent; and a substantial position can trigger premerger notification obligations under 15 U.S.C. § 18a unless an exemption applies — with the investment-only exemption unavailable to a holder intending to influence management.

And settlement is usually the objective. Most campaigns are designed to produce board representation and a strategic commitment, not to win an election. A company that understands that can negotiate rather than fight — and frequently gets a better outcome than the one it would have won.

The first seventy-two hours

A campaign starts on the activist's schedule, and the company's first three days set the tone for everything after.

Convene the response team. Chief executive, chief financial officer, general counsel, head of investor relations, outside counsel, financial adviser, proxy solicitor, and communications counsel. Named in advance, per the preparedness section — assembling the team is not the first task.

Read the filing carefully. What percentage, acquired when and at what prices, funded how, and — most importantly — what does the stated purpose disclose about intentions? A 13D that discloses plans regarding board composition is a different matter from one that does not.

Brief the board within twenty-four hours, in writing, with the filing attached and a preliminary assessment. Directors who learn about a campaign from the press or from a friend become difficult to manage.

Say something, carefully. A short acknowledgment — the company welcomes input from shareholders and is committed to acting in the interests of all of them — buys time without conceding anything. Silence reads as unpreparedness; a defensive statement reads as entrenchment. Nothing more substantive should go out until the board has met.

Do not do these things: attack the activist personally; announce a defensive measure reflexively; make a hasty strategic announcement that looks like a response; or have an executive respond publicly without approval.

Start the surveillance and register work immediately. Who else is accumulating, what the institutional base looks like today, and which holders should be called first.

Assess the substance honestly, in a privileged setting. Which of the activist's arguments are right? A board that cannot answer that question is not ready for the conversations with its own shareholders.

And check the calendar. The advance notice window, the nomination deadline, and the annual meeting date determine the timetable of everything that follows. Diarize them before doing anything else.

Preparedness: the work that decides it

Campaigns are won and lost before the activist appears.

Know your shareholder base. Stock surveillance identifying accumulations, quarterly institutional holdings analysis, and a current understanding of who owns the company and what they think. A company surprised by its own register has already lost time.

Run a self-assessment through activist eyes. Total shareholder return against peers and against the index. Segments or assets that would be worth more separately. Capital allocation. Margin performance. Governance features an adviser would criticize. Board tenure, composition, and skills. Executive compensation relative to performance. If the company can build the activist's deck, it can address the arguments before they are made publicly.

Fix what the assessment finds. Refresh the board where tenure or skills are weak. Address the underperforming segment. Adjust compensation. Improve disclosure of the strategy. Every remediated issue is an argument the activist cannot make.

Build the institutional relationships in ordinary years. Meet the governance teams, not only the portfolio managers. Understand each major holder's voting policies. A company that has spoken with its top holders about governance in a year when nothing was happening starts a campaign with a relationship; one that has not starts as a stranger.

Have the infrastructure ready: advance notice bylaws reviewed and current; a rights plan on the shelf; a response team named with defined roles; a proxy solicitor, financial adviser, and outside counsel identified and briefed; communications materials drafted in outline; and a board that has discussed what it would do.

Run a tabletop. A simulated 13D filing, with the response team working the first seventy-two hours. It reveals who is missing from the plan, and it is far cheaper than learning that during the real thing.

And take the substance seriously. The uncomfortable truth in this practice is that activists are frequently right about something. A board that treats every campaign as an attack to be repelled, rather than as an argument to be evaluated, will eventually meet one whose thesis the shareholders find more persuasive than the board's.