Basics 5 min read· Updated October 10, 2026

Buyback glossary

Every term used on this site, defined in one or two sentences, from accelerated share repurchase to treasury stock.

TermMeaning
Accelerated share repurchase (ASR)A buyback executed through a bank that delivers most of the shares immediately and covers its position in the market over the following months.
AuthorisationBoard or shareholder approval to repurchase up to a stated amount or number of shares. A ceiling, not a commitment.
Blackout periodWeeks before results when insiders may not trade. Companies continue buybacks through pre-set 10b5-1 plans or MAR-compliant mandates.
Buyback yieldCash spent on repurchases over twelve months divided by market capitalisation.
CancellationLegally retiring repurchased shares so they cease to exist. Reduces authorised and issued share capital.
Dividend withholding taxTax a company must deduct from dividends before paying shareholders. 15% in the Netherlands.
Dutch auction tenderA tender offer with a price range in which holders name their price and the company pays the lowest clearing price to all accepted sellers.
Excise tax on buybacksA 1% US federal tax on the net value of shares repurchased by listed companies, in force since 2023.
Free cash flow (FCF)Operating cash flow minus capital expenditure. The cash available for dividends, buybacks and debt reduction.
Gross repurchasesTotal cash spent buying shares, before subtracting shares issued.
InkoopfaciliteitThe Dutch dividend-withholding-tax exemption that lets listed companies repurchase shares without triggering the 15% tax, within limits.
Market Abuse Regulation (MAR)EU rules that, among other things, define the safe harbour conditions for buyback programmes.
Net repurchasesRepurchases minus the value of shares issued, mainly to employees. The figure that drives the share count.
Open-market repurchaseBuying shares on the exchange through a broker over time, like any other investor.
Payout ratioShare of profit or free cash flow returned to shareholders through dividends and buybacks.
Rule 10b-18The US SEC safe harbour that protects companies from manipulation claims if they follow volume, timing, price and single-broker conditions.
Shareholder yieldBuyback yield plus dividend yield: total cash returned relative to market value.
Shares outstandingShares held by investors, excluding those the company has retired. The number that buybacks reduce.
Stock-based compensation (SBC)Pay delivered in shares or options. Creates new shares that offset buybacks.
Tender offerA public invitation to all shareholders to sell shares to the company at a stated price or price range for a limited time.
Total shareholder return (TSR)Share price change plus dividends over a period. The outcome buybacks are supposed to improve.
Treasury sharesRepurchased shares the company keeps rather than cancels, often for employee plans or acquisitions.
TTM (trailing twelve months)The sum of the latest four reported quarters. Our default period for repurchases.
This guide is general information, not investment or tax advice. Figures quoted from this site were correct when the guide was last updated and may have changed; the live numbers are in the rankings.

Test it on real companies

Every metric in this guide is on the rankings page, for every company we track.

Open the rankings