Constellation Energy (CEG) RSU sell-vs-hold
Calculator · free · no signup · CEGSell at vest or hold? Compare after-tax payout from selling Constellation Energy RSUs at vest vs. holding through the LTCG cliff at 12 months.
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Your vest
Tax inputs
Hold strategy
Best after-tax payout — at year 1 yr
$47,709
Sell + invest wins by $4,981 over Hold 1 yr.
Estimates only. Not financial advice.
Heads-up: under-withholding. Your employer withholds federal tax at the IRS supplemental rate (22.0% on this vest, ≈ $17,600). Your marginal federal rate on this vest is 32.7%, owing $26,171. Expect to settle the $8,571 gap at tax time.
The hidden purchase
Tax was paid at vest either way. Holding is mathematically equivalent to taking $44,509 in after-tax cash and buying $44,509 of CEG today.
Most diversification frameworks would advise against a purchase that size in a single name; the right answer depends on your conviction in CEG. Holding past one year converts the gain to LTCG.
Sell + invest
Best payout| Vest value (shares × price) | $80,000 |
| Federal | |
| State | |
| Medicare | −$1,160 |
| Additional Medicare | −$720 |
| Market gain over 1 yr at 10.0% | $4,451 |
| Cap-gain tax on diversified gain — LTCG (federal + state + NIIT) | −$1,251 |
| Net at year 1 yr | $47,709 |
Sell every share at vest; invest the after-tax cash at the market return for 1 yr, then liquidate. Diversified — no single-stock concentration risk.
Hold 1 yr
| Vest value (shares × price) | $80,000 |
| Vest tax (federal + state + FICA) | |
| Net at year 1 yr | $42,728 |
Sold 444 shares to cover vest tax (net-settled); kept 556 shares 1 yr to qualify for long-term capital gains.
Social Security + Medicare are payroll taxes (collectively called FICA) — they apply because you're still employed at vest.
Both columns are stated in year-1 yr dollars. The sell side compounds at the market return; the hold side compounds at your single-stock expected return after a 20% volatility drag.
Estimates only. Assumes net-settled (sell-to-cover) vesting; double-trigger and pre-IPO RSUs are out of scope. Excludes multi-state moves, AMT interactions on other equity, and 83(b) elections. Not financial advice.
You evaluated one RSU vest. The beta plans every vest of every grant across years, with concentration and AMT in the loop.
Request beta access →Related calculators: RSU Lot Order Calculator · Stock Concentration Calculator
About Constellation Energy
Constellation Energy (CEG) is a public Utility company, incorporated in Pennsylvania and headquartered in Baltimore, MD.
Last close: $266.83 per share (as of 2026-08-18).
Equity grants at Constellation Energy typically include restricted stock units (RSUs).
Constellation Energy Corporation is an American energy company headquartered in Baltimore, Maryland. The company provides electric power, natural gas, and energy management services. It has approximately two million customers across the continental United States.
Source: Wikipedia (CC BY-SA 4.0)
Exelon separated its power generation business in 2022, creating the largest operator of nuclear plants in the United States. Nuclear output is carbon-free and runs continuously, which turned a commoditized asset into a scarce one as data-center operators began contracting directly for clean round-the-clock power. Production tax credits established a revenue floor that changed the risk profile of the fleet. Long-term power purchase agreements with technology companies are the strategic shift. Headquarters are in Baltimore.
Sources: sec.gov · en.wikipedia.org
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by Constellation Energy.
Constellation Energy (CEG) RSUs vest as ordinary income at the price on vest day. The decision is whether to sell at vest and reinvest, or hold the shares through the 12-month LTCG cliff. This calculator runs both paths through the same after-tax math so you can compare like-for-like.
Example: 500 Constellation Energy (CEG) RSUs vesting at $266.83 per share is $133,415 of ordinary income on vest day. After roughly 32% combined federal + state + FICA (~$42,693), the post-tax share value is ~$90,722. Holding 12 months for long-term capital-gains treatment then only matters for the price change between vest and sale; the ordinary income at vest is already locked in. The calculator runs both paths through the same after-tax math.
All Constellation Energy tools → · Use the generic RSU Sell-vs-Hold Calculator for any company. Diversifying multiple RSU lots? See the lot-by-lot sell order →
Constellation Energy equity questions
- Should I sell or hold my Constellation Energy RSUs at vest?
- Constellation Energy restricted stock units (RSUs) are taxed as ordinary income on their value at vest whether or not you sell. The only open decision is what to do with the shares afterward: sell at vest and reinvest, or hold past twelve months for long-term capital-gains treatment on any further gain. The calculator above runs both paths through the same after-tax math so you can compare them directly.
- Does Constellation Energy grant ISOs, NSOs, or RSUs?
- Equity compensation at Constellation Energy typically takes the form of restricted stock units (RSUs). Restricted stock units are taxed as ordinary income when they vest.
One piece of the puzzle.
OptionsAhoy plans your Constellation Energy equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.