West Pharmaceutical Services (WST) Protective Put Calculator
Calculator · free · no signup · WSTPrice a protective put, zero-cost collar, or put spread on West Pharmaceutical Services. Annual cost, max loss, upside cap, tax treatment, auto-filled from current WST option chain.
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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.
A protective put caps your downside on the WST position at a chosen floor; a zero-cost collar pays for that floor by capping the upside. This calculator prices both structures off the current WST option chain, with annual cost, max loss, and tax-treatment notes.
Example: a 5,000-share WST position at $364.98 is worth $1,824,900. A 1-year 30%-OTM put on that position typically runs 2-4% of position value per year (about $36,498 to $72,996) before any premium offset from a short call. The calculator prices both structures off WST's current option chain so you see the actual cost for your chosen floor, tenor, and cap.
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West Pharmaceutical Services equity questions
- How much does it cost to hedge WST stock?
- The cost of a protective put depends on how far below the current price you set the floor, how long the protection lasts, and WST's option-implied volatility. A zero-cost collar lowers that cost by selling away some upside. The calculator above prices both structures off the current WST option chain and shows the annual cost, maximum loss, and tax treatment.
- 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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