Every input sits in the financing section of the cash flow statement, where ASC 230 places cash paid to and received from owners. Dividends are commonly tagged PaymentsOfDividendsCommonStock, buybacks PaymentsForRepurchaseOfCommonStock, and new share sales ProceedsFromIssuanceOfCommonStock. It is not a line item companies report under US GAAP. Some filers use the broader PaymentsOfDividends element, which can also include payments to preferred holders and distributions to noncontrolling interests, so the dividend figure may capture more than common dividends.
Because the measure is based on cash, timing matters. A buyback executed in the last days of a quarter but settled in the next appears in the later period, and a dividend declared but not yet paid is excluded. Proceeds from employee stock option exercises usually count as issuance and reduce the net total, which is why companies with large equity compensation programs can buy back substantial amounts of stock without shrinking their share count much. Definitions also vary: some data providers report the gross figure without subtracting issuance.
Analysts compare cash to shareholders with free cash flow to see whether distributions are sustainable. Returning more than the business generates for several years usually means the company is funding payouts with debt or cash reserves. Dividing the figure by market capitalization gives a shareholder yield, which puts dividends and buybacks on the same footing when comparing companies that favor one over the other.