Spinoffs & Mergers · four ideas0 of 4 ideas marked read on this device

Free course · Module 4

Spinoffs and Mergers

A company deal can leave you with two stocks, cash, replacement shares or a mixture. Learn to read the terms and dates, track fractional shares and preserve the records behind your cost basis.

Written by the StockEducation Editorial Team · Reviewed by Associate Professor Charles Lo, CPA, PhD · Updated 19 Oct 2026 · How we check lessons

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Idea 1 of 4

A spinoff changes what you own.

A spinoff distributes shares in a separated business to the parent’s shareholders. You generally keep the parent shares and receive the new company’s shares at the stated ratio. The businesses and their market prices change; receiving another stock is not free extra wealth.

GE’s April 2, 2024 GE Vernova distribution used one GEV share for every four GE shares. In the historical example below, 100 GE shares become a holding of 100 GE shares plus 25 GEV shares. GE continued as GE Aerospace under the GE ticker. Source 1.

Before the GE Vernova distribution100 GE shares

One parent-company holding

Parent retained100 GE

GE Aerospace shares

New shares distributed25 GEV

100 ÷ 4 = 25 shares

Two holdings, with different businesses.

The share count alone does not tell you the combined market value or future return.

Historical distribution ratio, illustrated for a 100-share eligible holding with no fractional entitlement. The icons represent business activities, not official company logos. Dates and entitlement rules must be checked in the actual corporate-action documents. Source 1.
Dates, due bills and fractional shares

Read the trading arrangements GE’s record date was March 19, 2024 and the distribution date April 2. Its announcement described trading with and without the distribution entitlement before the spinoff. A sale after the record date could transfer that entitlement; GE directed sellers to ask their broker. Do not treat a record date alone as a guarantee that you keep the new shares. Source 1.

Separate the fraction A 102-share GE holding created a 25.5-share entitlement. In this distribution, the agent sold aggregated fractions and paid net cash rather than delivering fractional GEV shares. The sale proceeds and the basis allocated to the fraction are separate records. U.S. federal tax consequences and other jurisdictions require the applicable rules. Source 3.

Remember this

Read the distribution ratio and the entitlement rules together.

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Idea 2 of 4

Allocate the existing cost basis.

A qualifying tax-free distribution generally reallocates existing basis between the holdings. It does not make the new shares’ basis automatically zero. GE’s Form 8937 attachment illustrates an allocation using relative fair market values, with roughly 79.74% staying with GE and 20.26% going to GEV. It expressly permits other reasonable valuation approaches in consultation with a tax adviser. Source 2.

The company’s own illustration starts with 1,200 GE shares and a $12,000 basis. Its unrounded price-based weights produce the allocations below, rounded to cents. The total basis remains $12,000.

Company illustration · 1,200 GE shares beforeOriginal basis: $12,000.00

300 GEV shares distributed at 1 for 4

Allocated to GE$9,568.41

Approximately 79.74%

Allocated to GEV$2,431.59

Approximately 20.26%

Reconcile the total$9,568.41 + $2,431.59 = $12,000.00
Basis is allocated, not created.

Keep the issuer’s document and the calculation with your records.

GE Form 8937 attachment, 2024 illustration: 1,200 GE shares × $140.53 = $168,636 fair market value; 300 GEV shares × $142.85 = $42,855. The GEV weight is $42,855 ÷ $211,491. Using the displayed rounded 20.26% alone would give a slightly different cent amount. These are historical valuation inputs, not today’s prices or a method required for every taxpayer. Source 2.
What does Form 8937 establish?

Use the transaction’s own documents The issuer reports an organizational action affecting basis. GE’s attachment says its distribution was intended to qualify under U.S. Section 355 and explains an illustrative fair-market-value approach. This is not a guarantee of tax-free treatment for every person, account or country. Source 2.

Preserve each tax lot Different purchase dates and prices can require separate lot calculations. Reconcile the parent basis, retained spinoff-share basis and the basis assigned to any fractional sale. Compare the issuer’s guidance with broker records and seek qualified help for your actual reporting. Market value and tax basis are different measures. Source 2; Source 3.

Do spinoffs automatically outperform?

Read the sample and the explanation Cusatis, Miles and Woolridge’s 1993 study examined 1965 to 1988 spinoffs and found positive abnormal returns, with the abnormal performance limited to firms involved in takeover activity. It is historical evidence about a sample, not a guarantee for a new distribution. Source 8.

Research both businesses A separated company can have different debt, margins, cash generation and incentives from its former parent. Review its information statement and financial statements independently. Receiving the shares automatically does not establish that either company suits your goals or that the two will beat a broad market benchmark.

Remember this

Keep the basis total intact and distinguish a historical example from your own tax position.

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Idea 3 of 4

Merger terms decide what you receive.

A merger’s consideration is the cash, shares or combination holders are entitled to receive under its terms. A fixed exchange ratio sets a quantity of buyer shares, not their future value. Elections, adjustments, fractional treatment and excluded holdings can change the result.

Read the proxy, information statement or proxy/prospectus and later closing notices. Shareholder approval, financing and regulatory conditions can matter before a deal closes. An announced offer is not already cash in your account. Source 4.

Fictional terms · assume the deal closesStart with 100 eligible target shares
Cash: $50 per share$5,000 cash

100 × $50

Stock: 0.5 buyer share50 shares

100 × 0.5 · buyer shares

Mixed: $20 + 0.25 share$2,000 +
25 shares

Cash plus buyer shares

Read what replaces the target shares.

Cash, a share quantity and a mixed payment are not the same settlement.

Three separate fictional fixed-term deals, not three choices necessarily available in one offer. Assumes eligible shares, closing and no fees, withholding, proration or other adjustments. The stock and mixed cases have uncertain market values because the buyer’s share price can change. Not an offer or recommendation. Source 4 explains merger consideration.
A real cash deal: Microsoft and Activision

What happened at closing Activision’s October 13, 2023 Form 8-K reports completion of the Microsoft transaction. Eligible common shares, subject to the stated exclusions, were cancelled and converted into a right to $95 cash each without interest. A 100-share eligible holding therefore corresponded to $9,500 gross, before any applicable deductions. Source 5.

Check trading and payment notices The filing says Activision requested a Nasdaq halt before trading opened on the closing date, withdrawal from listing and a Form 25 filing. Delisting steps and a broker’s payment processing are not a promise that cash appears instantly. Do not confuse cash received with taxable gain; your basis, account and applicable rules matter. Source 5.

Tender offers, elections and deadlines

Read the offer directly A tender offer asks security holders to tender within a limited period and may have conditions such as a minimum quantity. It differs from merely waiting for a merger to become effective. Check offer documents, broker deadlines, any election and withdrawal rights, and what happens if you do nothing. Source 6.

Do not assume a premium The SEC warns that mini-tender offers may be below the market price and lack protections of larger offers. Verify the bidder, fees, price, conditions and withdrawal terms. The title of an offer is not evidence that accepting it benefits you. Source 7.

Remember this

Terms, conditions and effective dates determine the settlement.

Marks Idea 3 read on this device

Idea 4 of 4

Keep the shares and basis reconciled.

Reproduce the GE illustration, then try a fractional entitlement. This practice model uses the company’s opening-price method and one original lot. The 1-for-4 entitlement is split into whole shares and a fraction assumed sold by the agent. It calculates basis only, not cash proceeds or tax due.

Reconcile shares and cost basis

Historical method · practice inputs
GEV entitlement before the fractional sale25 shares

25 whole shares retained; no fraction.

Basis remaining with GE$7,973.67
Basis in retained whole GEV shares$2,026.33
Basis assigned to the fraction sold$0.00
Basis check$7,973.67 + $2,026.33 + $0.00 = $10,000.00

Fractional-sale cash is not calculated. Obtain the agent’s actual proceeds and any costs separately.

GE weight = (shares × $140.53) ÷ combined hypothetical fair market value; GEV uses one-quarter as many shares at $142.85. The prices are the issuer’s April 2, 2024 illustration. The model keeps full weights, rounds allocations to cents and assigns rounding differences so the displayed amounts reconcile. One lot only; other valid methods or tax treatments may apply.

Try three checks

  1. Choose the company example. Confirm 300 GEV shares and the $9,568.41 / $2,431.59 allocation in Form 8937.
  2. Choose 102 shares. Explain why the 25.5-share entitlement becomes 25 retained whole shares plus cash for the half share, and why part of the GEV basis belongs to that half.
  3. Keep the issuer’s document, your original lots, the broker’s allocation and the fractional-sale statement together. Write what would still be missing from an actual tax calculation.
Why a merger spread is not free profit

Calculate both outcomes Suppose a fictional target trades at $90 with a conditional $95 cash deal. Completion gives $5 gross upside, about 5.56% of $90. If a failed deal leaves it at an assumed $65, the loss is $25, about 27.78%. Neither the failure price nor the probability is known from the spread alone.

Include time and conditions Merger arbitrage takes completion, delay, regulatory, financing and market risks. Costs, taxes and the time to payment affect the result. A larger spread is not a guaranteed bargain, and a historical completed deal cannot prove another will close. This is scenario arithmetic, not a current security or a strategy recommendation.

Remember this

Reconcile the records before interpreting a deal as a gain.

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Quick check

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Question 1 of 3

You own 100 eligible parent shares and the distribution is 1 new share for every 4 held. What do you own after this simplified spinoff?

You finished Spinoffs and Mergers.

You can read what a deal distributes, separate whole and fractional shares, and reconcile the basis records. Continue with the next item in the course.

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Review your takeaway card and the learning path
  • Spinoffs separate holdings. Keep the parent shares and follow the distribution ratio.
  • Basis needs records. Allocate it under the applicable rules and preserve each lot.
  • Merger terms differ. Cash, stock and mixed consideration need different checks.
  • Fractions and risk matter. Separate cash proceeds from basis and do not treat a deal spread as guaranteed profit.
See the learning path →

Reading markers and these practice checks stay on this device. They do not mark the LMS lesson complete.

Sources and assumptions

  1. GE: February 29, 2024 spinoff announcement, SEC Exhibit 99.1. Record/distribution dates, one-for-four ratio, retained GE shares and trading-entitlement arrangements.
  2. GE: Form 8937 attachment, 2024 distribution. Illustrative relative-value method, alternative reasonable approaches, lot records, opening prices and the 1,200-share basis example.
  3. GE Vernova: March 2024 Form 10 information statement. Fractional-share aggregation/sale and cash, distribution terms and qualified U.S. tax discussion; see the spinoff Q&A and tax section.
  4. Investor.gov: Mergers. Consideration, shareholder information, approval and documents.
  5. Activision Blizzard: October 13, 2023 Form 8-K. Completed Microsoft transaction, eligible common shares converted into the right to $95 cash and Nasdaq halt/delisting requests.
  6. Investor.gov: Tender Offer. Limited offer period, shareholder decision and possible conditions.
  7. Investor.gov: Mini-Tender Offers. Below-market pricing and differences in disclosure/withdrawal protections.
  8. Cusatis, Miles and Woolridge: Restructuring through spinoffs (1993). Journal of Financial Economics 33(3), 293 to 311. Historical sample and takeover-related abnormal performance; Penn State publication record and abstract.

Sources checked 19 October 2026. The 2023/2024 deals and prices are historical examples. Practice allocations are simplified, not individual tax calculations or investment recommendations. Local reading and quiz controls do not mark an LMS lesson complete.

StockEducation provides general education, not personal financial, tax or legal advice. Nothing here recommends a specific security. Investing involves risk, including loss of money you invest.

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