Cerebras Systems (CBRS) RSU sell-vs-hold
Calculator · free · no signup · CBRSSell at vest or hold? Compare after-tax payout from selling Cerebras Systems RSUs at vest vs. holding through the LTCG cliff at 12 months.
Beta · invite-only · AlphaLatitude Inc. · Free Tools
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 CBRS today.
Most diversification frameworks would advise against a purchase that size in a single name; the right answer depends on your conviction in CBRS. 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 →About Cerebras Systems
Cerebras Systems (CBRS) is a public Semiconductors company, incorporated in Delaware and headquartered in Sunnyvale, CA. IPO'd May 14, 2026.
Last close: $215.08 per share (as of 2026-07-13).
IPO May 2026; wafer-scale AI compute.
Equity grants at Cerebras Systems typically include incentive stock options (ISOs), non-qualified stock options (NSOs), and restricted stock units (RSUs).
Cerebras Systems Inc., headquartered in Sunnyvale, California, develops semiconductors, supercomputers, and related software to power artificial intelligence deep-learning applications such as inference engines. Products include its wafer scale engine (WSE)-3 semiconductors, its CS-3 supercomputers, and its "AI inference cloud" and "AI training cloud" APIs, which allow users to access the company's computing power without buying its hardware. The company also builds data centers using its processors and supercomputers to provide cloud computing services directly to clients.
Source: Wikipedia (CC BY-SA 4.0)
Founded in 2016 by Andrew Feldman, Gary Lauterbach, Michael James, Sean Lie, and Jean-Philippe Fricker (the SeaMicro team that sold to AMD in 2012), Cerebras builds wafer-scale AI compute from its Sunnyvale headquarters. The flagship WSE-3 packs 4 trillion transistors onto a single TSMC 5nm wafer, powering CS-3 systems and a high-speed inference cloud. Customers include G42's Condor Galaxy supercomputers and Lockheed Martin. After CFIUS scrutiny of the G42 stake delayed its 2024 S-1, Cerebras refiled and is targeting a Nasdaq debut under CBRS.
Sources: en.wikipedia.org · cerebras.ai · finance.yahoo.com
Equity comp at Cerebras Systems
- Original S-1 filed September 2024 was paused due to CFIUS review of UAE-based G42's investment (G42 accounted for 83% of 2023 revenue and 97% of 2024 hardware sales). CFIUS clearance reportedly obtained in early 2025 but IPO remained on hold; company raised $1.1B at an $8.1B valuation. Refiled S-1 in April 2026 with G42 removed from the investor list, targeting a May 14, 2026 NASDAQ listing under ticker CBRS. Holders face a concentrated tax-withholding event at IPO (about $230M earmarked for RSU settlement obligations) after roughly 18 months of regulatory uncertainty.
- 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.
Sources: sec.gov · techstartups.com
Researched 2026-05-11.
OptionsAhoy is an independent tool and is not affiliated with, endorsed by, or sponsored by Cerebras Systems.
Cerebras Systems (CBRS) 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 Cerebras Systems (CBRS) RSUs vesting at $215.08 per share is $107,540 of ordinary income on vest day. After roughly 32% combined federal + state + FICA (~$34,413), the post-tax share value is ~$73,127. 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 Cerebras Systems tools → · Use the generic RSU Sell-vs-Hold Calculator for any company.
Cerebras Systems equity questions
- Should I sell or hold my Cerebras Systems RSUs at vest?
- Cerebras Systems 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 Cerebras Systems grant ISOs, NSOs, or RSUs?
- Equity compensation at Cerebras Systems typically takes the form of incentive stock options (ISOs), non-qualified stock options (NSOs), and restricted stock units (RSUs). Incentive stock options can trigger the alternative minimum tax (AMT) when you exercise. Restricted stock units are taxed as ordinary income when they vest.
- When did the Cerebras Systems IPO lockup expire?
- Cerebras Systems (CBRS) went public on May 14, 2026. The standard post-IPO lockup runs 180 days, so employee and insider shares generally became sellable around November 10, 2026. Confirm against your own grant paperwork, since some lockups release early or in stages.
- Do Cerebras Systems RSUs use double-trigger vesting?
- Yes. Cerebras Systems 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.
One piece of the puzzle.
OptionsAhoy plans your Cerebras Systems equity alongside hedging, vesting, and de-concentration, across bullish, neutral, and bearish market scenarios. Free during beta.