Procedure · Capital restructure
How to do a stock split
A stock split is a re-denomination, not a value-creating event. Each shareholder ends with a different share count but the same percentage ownership and the same total economic position. The procedure runs through an articles amendment (most cases), an effective date, the re-issuance of certificates, and the proportional adjustment of every share count and per-share figure in the corporate record.
Quick facts
Stock split
| When | To re-denominate the share count or per-share price; commonly pre-financing |
|---|---|
| Authorized by | The board (usually) and the shareholders (most cases, through articles amendment) |
| Effective on | The effective date in the articles of amendment, or the date of acceptance by the registrar |
| Records updated | Share register, certificates, cap table, option grants, SAFE/note terms, financial statements |
At a glance
- A stock split changes share counts and per-share prices proportionately; economic position unchanged
- Most splits require an articles amendment and shareholder special resolution
- Option strikes, SAFE caps, and note conversion math adjust on the same ratio
- The effective date is the pivot; pre- and post-split figures must not be mixed
- Generally tax-free for shareholders under most regimes (pro-rata structure)
On this page
Steps
Confirm the purpose and the split ratio
Identify why the split is being done: lowering the per-share price to a more workable range for issuances (forward split, e.g. 10-for-1), increasing the per-share price by consolidating shares (reverse split, e.g. 1-for-10), or aligning the share count to a target structure ahead of a financing or acquisition. The split ratio is a board judgement based on the desired post-split per-share value and the desired total outstanding share count.Determine whether an articles amendment is required
A forward split that does not exceed the authorized share count of the class may not require an articles amendment in some jurisdictions, but most stock splits in private corporations do, particularly when authorized capital is structured as a fixed number rather than an unlimited count. A reverse split almost always requires an articles amendment because it reduces the outstanding share count and typically requires re-statement of the authorized share count. Check the articles for any fixed authorized capital and any pre-split protections in shareholders agreements.Pass the board resolution
The board passes a resolution approving the split, fixing the split ratio, fixing the record date (the date as of which shareholders entitled to receive split shares are determined), and the effective date (the date the split takes effect). If an articles amendment is required, the resolution also recommends the amendment to shareholders and calls or schedules the shareholder vote. See how to pass a board resolution.Obtain shareholder approval where required
Shareholder approval is required where the split requires an articles amendment (most splits) and in any case if the bylaws, the articles, or a shareholders agreement requires it for class-affecting actions. The threshold is the special-resolution threshold under the relevant statute (two-thirds under CBCA and OBCA, majority of outstanding shares under DGCL § 242, 75% special resolution under Companies Act 2006 s. 21). A separate class vote may apply if the split disproportionately affects a class.File the articles of amendment and confirm effectiveness
If an amendment is required, file the articles of amendment with the corporate registrar and confirm the effective date (often specified in the filing, or the date of acceptance). The split becomes effective on that date; pre-effective-date share counts apply to pre-effective-date actions, and post-effective-date share counts apply afterward. No action may be taken in reliance on the post-split share count until the effective date. See how to amend articles of incorporation.Re-issue certificates and update the share register
On the effective date, the old certificates are cancelled and new certificates are issued to reflect the post-split share count. The share register records the cancellation of the prior certificate numbers and the issuance of the new certificate numbers on the effective date, with the consideration unchanged from the original issuance. For uncertificated shares, the register entries are updated to the new share count without certificate re-issuance.Adjust the cap table, option plan, SAFE/note terms, and financial reporting
All references to share counts and per-share prices throughout the corporate record are adjusted: the cap table (post-split share counts and per-share prices for prior issuances), the option plan and outstanding option grants (strike prices and option counts adjusted on the same ratio), outstanding SAFEs and convertible notes (cap and conversion math adjusted per their anti-dilution provisions), and financial reporting (per-share figures restated for prior periods). The split is not a value-creating event; the economic position of each holder is unchanged.
Jurisdiction notes
The mechanics are similar; the amendment threshold and the authorized-capital treatment differ:
- Delaware (DGCL). Stock splits implemented through an amendment to the certificate of incorporation under DGCL § 242. Forward splits that change the authorized share count require shareholder approval (majority of outstanding shares). DGCL § 173 permits the board to declare a "reclassification" in some circumstances without shareholder vote when the certificate authorizes. Reverse splits with cash-out of fractional shares trigger appraisal rights under § 262 in specific circumstances. View jurisdiction guide
- California. Stock splits and reverse splits under California Corporations Code §§ 900 and 902 (articles amendment) and § 407 (fractional shares). Reverse split that cashes out fractional shares may trigger dissenters' rights under § 1300. View jurisdiction guide
- Canada (CBCA). Stock split implemented through articles of amendment under CBCA s. 173. Special resolution required (two-thirds). Reverse splits are uncommon; share consolidation is typically achieved through repurchase rather than reverse split. View jurisdiction guide
- Ontario (OBCA). Mirrors the CBCA: articles amendment under OBCA s. 168, special resolution required. View jurisdiction guide
- United Kingdom. Sub-division of shares under Companies Act 2006 s. 618 (forward split) requires an ordinary resolution; consolidation of shares under s. 618 (reverse split) requires an ordinary resolution. Notice of sub-division or consolidation filed with Companies House within one month under s. 619. No fractional shares are permitted; the resolution must address rounding. View jurisdiction guide
Common mistakes
- Treating the approval date as the effective date. The board approves the split on March 1 with an effective date of April 1. A new option grant is made on March 15 using the post-split share count and strike. The grant is technically inconsistent with the articles until April 1, and the cap table is in a hybrid state for two weeks.
- Option grants not adjusted. The split is implemented and the share register and cap table are updated, but the option grants are not adjusted. The next exercise produces shares at the old strike against the post-split share count, materially overpriced.
- SAFE/note caps not adjusted. The split occurs and outstanding SAFEs continue to reference the pre-split cap. At the next round, the SAFE conversion math uses the wrong denominator and produces incorrect share counts.
- Authorized capital exceeded. A forward split implemented without amending authorized capital pushes outstanding shares above the authorized limit. The post-split issued shares are ultra vires until ratified through a follow-on amendment.
- Fractional shares not addressed. The split ratio creates fractional shares for some shareholders (e.g. a 3-for-2 split of a holder with an odd share count). The resolution does not specify the rounding or cash-out treatment, and the corporation issues fractional shares contrary to most statutes' prohibition.
In Octelligence
A split that adjusts every record at once.
Octelligence applies the split ratio across the share register, cap table, option ledger, SAFE/note records, and historical per-share figures on the effective date. The pre-split and post-split states are both preserved so historical issuances remain auditable against the price and count in effect at the time. Re-issued certificates link back to the cancelled original.
See Cap Tables & FinancingFAQ
Common questions
Generally no for shareholders. A stock split is a capital reorganization that adjusts the share count and per-share basis proportionately, without changing the shareholder's economic position. In the US, IRC § 305 treats most pro-rata stock splits as tax-free. In Canada, ITA s. 86 or s. 51 typically applies on a tax-deferred basis. In the UK, a sub-division of shares under Companies Act 2006 s. 618 is not a disposal. Specific facts (non-pro-rata splits, splits combined with other transactions) can change the analysis.
Usually yes, because the split typically requires an amendment to the articles to reflect the new authorized share count and per-share par value (where par value exists). Under DGCL § 242, an amendment that effects a split requires shareholder approval at the same threshold as other articles amendments. Under the CBCA, a split is implemented through articles of amendment under s. 173, requiring a special resolution. The shareholder approval is not for the split itself but for the articles amendment that enables it.
They adjust proportionately. Standard anti-dilution adjustment clauses in option plans and SAFEs require that the strike price (for options) and the valuation cap (for SAFEs) adjust on a stock-split basis, so the holder's economic position is unchanged. A 10-for-1 forward split converts a $1.00 strike to a $0.10 strike and a 100,000-option grant to a 1,000,000-option grant. The plan's anti-dilution provisions are the controlling text; in their absence, the result follows from the corporation statute's equitable adjustment principles.
Mechanically similar; legally and accounting-wise distinct. A stock split is a re-denomination of existing shares (each holder receives more or fewer shares for each share they hold; total economic ownership unchanged). A stock dividend is a distribution of additional shares treated as a dividend on the existing shares. The accounting treatment differs (stock dividend transfers retained earnings to share capital; split does not). The tax treatment can also differ in some jurisdictions, though most pro-rata stock dividends are also tax-free.
Yes, and this is sometimes the purpose. A reverse split that produces fractional shares for small holders, combined with a cash-out of the fractional shares (commonly used to take a corporation private or simplify the cap table), can intentionally eliminate small shareholders. The cash-out price must be fair and supported by valuation evidence. Dissent and appraisal rights typically apply, and minority shareholders may challenge the transaction on fairness grounds.
On the effective date specified in the articles of amendment (or the resolution if no amendment is required). The shareholder approval date is not the effective date. Pre-effective-date actions, including share issuances and option grants, use the pre-split share count and per-share figures; post-effective-date actions use the post-split figures. Treating the approval date as the effective date is a common practical error that produces inconsistent records.
A split that updates the whole record
Share counts, strikes, caps, and certificates all adjust together.
From the board resolution to the re-issued certificates, the split flows through every record that references a share count, on the effective date, automatically.