Sell West Pharmaceutical Services (WST) stock to fund a goal
Calculator · free · no signup · WSTNeed cash for a goal? Plan the minimum-tax schedule to sell your vested West Pharmaceutical Services (WST) shares and net a target amount by a target date, across tax years.
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Inputs
Your equity
One stack per ticker (current-employer RSUs, prior-employer holdings, index fund, etc.). Each stack has its own current price, growth assumption, and cost-basis lots.
Drives chance-of-shortfall · default 30%
Lots
Plan
Estimates only. Not financial advice.
Lock-in-now is deterministic (0%). Plans that wait depend on future prices; risk is near-zero when inventory comfortably exceeds the goal. Volatility: each stack's option-implied vol if a ticker is set, otherwise 30%. Lognormal model; real markets have fatter tails.
| Tax | $109,654 | $111,723 | $111,788 | $118,699 |
| Wealth @ target | $718,258 | $716,076 | $713,344 | $710,913 |
| Chance of shortfall | <0.1% | 0% | 1.7% | 3.3% |
Feasible
$400,027 net by 08/01/27
Total tax: $109,654 (federal $58,856, state $36,063, NIIT $14,736)
Schedule · Recommended
| Sale date | Shares | Tax | Net | Cumulative |
|---|---|---|---|---|
| 08/26/26 | 4,088 | $351,349 | $360,067 | |
| 03/31/27 | 4 | $359 | $360,430 | |
| 04/30/27 | 32 | $2,891 | $363,340 | |
| 05/31/27 | 100 | $9,088 | $372,468 | |
| 06/30/27 | 100 | $9,141 | $381,631 | |
| 07/31/27 | 100 | $9,196 | $390,828 | |
| 08/01/27 | 100 | $9,199 | $400,027 |
Risk vs wealth
Each dot is a possible plan. Right is riskier, up is more wealth left over.
Trajectory of cash netted
Solid line = expected. Shaded band = 10th–90th percentile under price uncertainty.
After the plan
You keep 3,476 shares worth $410,758 at the projected target-date price, invested for the next decision.
You solved for a cash target. The beta optimizes your full portfolio across multiple goals and market scenarios, not just one funding need.
Request beta access →Related calculators: RSU Lot Order Calculator · Stock Concentration Calculator · RSU Sell-vs-Hold Calculator
About West Pharmaceutical Services
West Pharmaceutical Services (WST) is a public Medical Device company, incorporated in Pennsylvania and headquartered in Exton, PA.
Last close: $364.98 per share (as of 2026-10-03).
Equity grants at West Pharmaceutical Services typically include restricted stock units (RSUs).
West Pharmaceutical Services, Inc. is a designer and manufacturer of injectable pharmaceutical packaging and delivery systems. Founded in 1923 by Herman O. West and J.R. Wike of Philadelphia, the company is headquartered in Exton, Pennsylvania. In its early years of development, West produced rubber components for packaging injectable drugs, providing a sterile environment for the producers of penicillin and insulin.
Source: Wikipedia (CC BY-SA 4.0)
The company makes the rubber stoppers, seals, and syringe components that sit between an injectable drug and its container, a category most people never see and no drug maker can skip. Components are qualified as part of a drug's regulatory filing, so changing supplier means revisiting an approval, which produces switching costs out of all proportion to the price of the part. Growth has followed the shift toward biologics and self-administered injectables. Manufacturing precision and particulate control define the technical moat. Headquarters are in Exton, Pennsylvania.
Sources: sec.gov · en.wikipedia.org
Equity comp at West Pharmaceutical Services
- West Pharmaceutical's change in control agreements use double trigger protection: equity acceleration and cash severance only occur if a change in control happens and the executive is terminated (without cause, or resigns for good reason) within two years afterward. A change in control alone does not vest RSUs early.
- RSUs use double-trigger vesting. Two things must both happen before the shares are yours: (1) the normal time-based vesting completes, and (2) the company has a liquidity event (an IPO or an acquisition). Until both happen, you do not yet own the shares and you do not owe tax on them.
Researched 2026-08-27.
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by West Pharmaceutical Services.
If you hold vested West Pharmaceutical Services (WST) shares and need a set amount of cash by a date (a house down payment, tuition, a sabbatical, a business buy-in), the question is which lots to sell and in which tax years to keep the most after tax. This calculator builds the minimum-tax sell schedule across your lots, accounting for federal long-term capital gains, the net investment income tax, and your state.
Example: a 5,000-share WST position at $364.98 is worth $1,824,900. Say you need $150,000 of it for a house down payment by next spring. Selling enough shares all in one tax year can push the gain into the higher long-term capital-gains bracket and trigger the 3.8% net investment income tax; spreading the sale across two tax years often nets more. The calculator above finds the minimum-tax sell schedule across your specific lots, basis, goal, and date.
All West Pharmaceutical Services tools → · Use the generic Stock Sale Funding Calculator for any company.
West Pharmaceutical Services equity questions
- How much WST stock do I sell to fund a goal without overpaying tax?
- It depends on your cost basis, your target amount and date, and how the sale spreads across tax years. Selling vested WST shares triggers long-term capital-gains tax, plus the 3.8% net investment income tax and state tax above certain income, and bunching a large sale into one year can push the gain into a higher bracket. The calculator above builds the minimum-tax sell schedule across your lots to net your target amount by your date.
- Does West Pharmaceutical Services grant ISOs, NSOs, or RSUs?
- Equity compensation at West Pharmaceutical Services typically takes the form of restricted stock units (RSUs). Restricted stock units are taxed as ordinary income when they vest.
- Do West Pharmaceutical Services RSUs use double-trigger vesting?
- Yes. West Pharmaceutical Services restricted stock units (RSUs) vest only when two things both happen: the time-based schedule completes, and the company has a liquidity event such as an initial public offering (IPO) or an acquisition. Until both occur you do not own the shares and owe no tax on them.
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