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Acquisition: What Happens to Your Benefits + Equity

When your company is acquired, your equity, 401(k), and health benefits all change — sometimes within days. Here's the playbook for the first 30 days after an announcement.

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The acquisition announcement is a sentence. The fine print runs to thousands of pages, and most of it is decided weeks before you hear about it. Your equity, retirement accounts, and health coverage can all change before the deal closes — sometimes in your favor, sometimes not. Here's what to look for in the first 30 days.

The core questions to answer

1. What happens to your unvested equity?

This is governed by two terms in your grant documents:

  • Single-trigger acceleration: Unvested shares vest automatically on the closing date. Rare; favorable to you.
  • Double-trigger acceleration: Unvested shares vest only if (a) the acquisition closes AND (b) you are terminated within a defined window afterward (often 12 months). This is the more common structure.

If neither applies, your unvested shares typically convert to the acquirer's equity on a similar vesting schedule — but the new schedule may have different terms.

2. What happens to vested but unexercised options?

For ISOs and NQSOs that have vested but not been exercised, the deal documents will usually specify one of: cash-out at the deal price minus strike, conversion to acquirer options at an equivalent value, or a forced exercise window. Read the disclosure carefully.

3. What happens to your 401(k)?

Two common paths: the acquirer merges your plan into theirs (your balance moves; investment options change), or the acquirer terminates your plan and gives you 60–90 days to roll over. A direct rollover to the acquirer's plan or to an IRA is usually tax-free; cashing out is not.

4. What happens to health coverage?

Most acquirers continue your current health plan through the end of the calendar year, then transition you to their plan at the next open enrollment. Watch for: deductible reset mid-year (some transitions credit your prior deductible, some don't), and network changes that affect your existing doctors.

When acquisitions work in your favor

  • You have double-trigger acceleration and are part of the redundancy round — you may receive both severance AND accelerated equity.
  • The deal price is above the strike price on your options and you've held long enough for favorable tax treatment.
  • The acquirer's benefits package is materially better (higher 401(k) match, richer health plan, larger PTO accrual).
  • A retention bonus is offered to keep you through integration — these are common at the manager-and-above level.

When to be cautious

  • You have unvested equity and no acceleration clauses — the acquirer can re-vest you on their own schedule, which is sometimes worse.
  • The acquirer is a public company and your private-company shares are converting to public shares — there may be a lockup period (often 6 months) before you can sell.
  • The acquirer terminates your 401(k) plan and you forget to roll over within the window — a forced distribution can trigger taxes and penalties.

The first 30 days — checklist

  • Find your grant documents and locate the acceleration language.
  • Confirm your vesting status (vested vs unvested) as of the announcement date.
  • Document your current 401(k) balance and contribution rate.
  • Note the year-to-date deductible and out-of-pocket totals on your current health plan.
  • Identify the integration point of contact in HR.
  • If you're senior or hold significant equity, consult an equity-comp CPA before the closing date.

What to ask HR or the integration team

  • What is the exact closing date, and what changes that day vs at end of year?
  • Will my vested equity be cashed out, exchanged for acquirer shares, or rolled into new options?
  • Will my 401(k) plan be merged or terminated, and what's the timeline?
  • Will my deductible-year-to-date carry over, or does it reset?
  • Is there a retention bonus offered for my role?

The SEC requires public acquirers to file detailed disclosures — SEC investor education on mergers and acquisitions (affiliate link — OffbookHR may earn a commission if you buy through this link. It does not affect ranking.).

This page reflects general information and is not tax, legal, or investment advice. Acquisitions involve high-stakes, time-sensitive decisions — consult a CPA or attorney specializing in equity compensation before the deal closes.