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Phathom Pharmaceuticals Shares Outstanding History (PHAT)

Phathom Pharmaceuticals reported 71.4M shares outstanding at the end of fiscal 2025.

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Phathom Pharmaceuticals annual shares outstanding history

Phathom Pharmaceuticals annual shares outstanding

Fiscal yearPeriod endedShares outstandingChangeGrowth
20252025-12-3171.4M2.9M+4.23%
20242024-12-3168.5M10.5M+18.20%
20232023-12-3158.0M16.5M+39.79%
20222022-12-3141.5M11.0M+35.91%
20212021-12-3130.5M2.0M+7.00%
20202020-12-3128.5M3.8M+15.32%
20192019-12-3124.7M18.0M+265.78%
20182018-12-316.8M——

Phathom Pharmaceuticals shares outstanding trends

Over the last five fiscal years, Phathom Pharmaceuticals's shares outstanding moved from 28.5M to 71.4M, a change of 42.9M. The latest reported quarter, Q2 2026, shows 80.1M.

About the metric

What shares outstanding means

Shares outstanding is the number of common shares held by investors at a reporting-period end. The count can change because of stock issuance, repurchases, conversions, acquisitions, or stock splits.

Calculation and source

SEC-reported period-end shares

TickerStat displays period-end common shares from SEC filings and adjusts older values to the current share basis when a stock-split conversion ratio is reported directly or evidenced by a later filing’s restated historical share balance. After repeated reverse splits, an old period can represent less than one current-basis share; this is a split-adjusted equivalent, not a literal historical certificate count. Values remain as reported when no reliable split ratio is available. Fiscal periods can differ from calendar years, so exact period-end dates are included.

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