Treating Stock Options as an Expense

A software company reports earnings per share (EPS) of $2.00, trading at $100 per share for a P/E of 50x. On the surface, it appears fully valued. But the company granted 10% of shares in options last year, diluting shareholders by the equivalent of $10 in EPS. True adjusted EPS is closer to $1.80, making the P/E actually 55x. Stock-based compensation (SBC) is a real economic cost that reduces shareholder value but is often ignored or buried in non-GAAP adjustments.

Quick definition: Stock-based compensation is the fair value of equity (options, RSUs, stock appreciation rights) granted to employees, treated as an expense that should be fully deducted when calculating true intrinsic value and earnings power.

Key Takeaways

• Stock options represent real dilution to existing shareholders
• Companies often minimize SBC in reported earnings; you must add it back
• The cumulative effect of options over years compresses intrinsic value per share
• Tech and growth companies with high SBC are often more expensive than reported P/E suggests
• Comparing P/E ratios between cash-paying and option-paying companies distorts value
• True earnings per share should reflect full dilution from all equity instruments

Why Stock Options Are a Real Cost

Accounting vs. Economic Reality

GAAP accounting recognizes SBC as an expense equal to the accounting charge (typically spread over the vesting period of 3–4 years). But shareholders are diluted by the full fair value of shares granted, not just the accounting expense.

Example: A company grants 10M options to employees with an accounting fair value of $50M. GAAP expense: $50M / 4 years = $12.5M per year. Shareholder dilution: 10M shares × grant date price, which might be $5B (if stock is $500, that's 10M shares at current value).

The accounting expense is $12.5M. The real cost to shareholders is the 10M shares they no longer own exclusively—equivalent to 10M × $500 = permanent $5B reduction in total company value.

Why Companies Prefer to Ignore It

Excluding SBC makes reported earnings look better and P/E ratios appear cheaper. A company with $100M earnings and $20M SBC looks better at "$100M earnings, 10x P/E" than at "$80M true earnings, 12.5x true P/E." Wall Street allows both presentations; smart investors use the true one.

Methods for Adjusting SBC

Method 1: Treasury Stock Method (Conservative)

Use the shares granted minus the shares that could be bought back with the proceeds.

Example: A company grants 5M options.

• Fair value: $10 per option = $50M proceeds
• Current stock price: $40
• Shares that could be repurchased: $50M / $40 = 1.25M shares
• Net dilution: 5M - 1.25M = 3.75M shares

This method assumes the company uses tax proceeds to repurchase shares, which many do. It's conservative because it accounts for a offset.

Method 2: Full Dilution Method (Aggressive)

Count all shares granted as full dilution, with no offset.

5M options granted = 5M additional shares outstanding. This method assumes the company doesn't repurchase shares and is rarely accurate, but it shows maximum dilution risk.

Method 3: Weighted Dilution Adjustment

Average the dilution over time to see the cumulative impact.

A company grants:

• Year 1: 2M options at $50 stock price = $100M value
• Year 2: 2.5M options at $60 stock price = $150M value
• Year 3: 3M options at $70 stock price = $210M value

Annual average dilution: (2M + 2.5M + 3M) / 3 = 2.5M shares per year

If the company has 50M shares outstanding, it's growing share count by 5% annually due to SBC. Over 10 years, that's cumulative 50%+ dilution (ignoring buybacks).

Adjusting Reported EPS for Dilution

Step 1: Get reported net income.

Let's say: $200M

Step 2: Add back SBC (the accounting expense).

If SBC expense was $20M, add it back: $200M + $20M = $220M

But wait—this makes earnings worse, not better. The goal is to understand true economic costs.

Better approach:

Start with reported EPS and adjust the denominator (shares outstanding) for full dilution.

Example:

• Reported net income: $200M
• Basic shares outstanding: 50M
• Options and RSUs with dilutive effect: 2.5M shares (treasury stock method)
• Fully diluted shares: 52.5M

Reported EPS: $200M / 50M = $4.00 Diluted EPS: $200M / 52.5M = $3.81

The diluted EPS of $3.81 is the true earnings power per share when accounting for option dilution.

SBC and Cash Flow

An important distinction: SBC is a non-cash expense, but it's still a real cost.

A company might report:

• Operating cash flow: $250M
• Net income: $200M
• The difference: $50M in non-cash charges, of which $20M is SBC

The company's cash performance looks better than earnings ($250M cash vs. $200M earnings). But this doesn't make SBC free; it just means the dilution is paid in equity, not cash.

True cash available to shareholders:

Operating cash flow - capex - SBC dilution value = Free cash available to equity holders

If $20M SBC has a value of $20M (accounting fair value), then: $250M OCF - (capex) - $20M SBC cost = true free cash to shareholders

Some investors include SBC in free cash flow calculations; others don't. The key is consistency.

The Cumulative Dilution Problem

Over time, SBC compounds into massive dilution:

Tech Company Example:

• 2015: 100M shares outstanding
• 2015-2024: Average 5M new shares granted annually via options/RSUs
• SBC dilution per year: 5% of shares
• Cumulative dilution: ~50% by 2024

A company that earns the same net income in 2024 as in 2015 would show:

• 2015: $1B earnings / 100M shares = $10 EPS
• 2024: $1B earnings / 150M shares = $6.67 EPS

Reported earnings per share collapsed 33% despite flat earnings! An investor who bought on EPS growth expectations was fooled by dilution.

Conversely, a company that bought back shares while issuing options grew EPS without growing earnings. This financial engineering inflates reported P/E metrics.

When SBC is Most Dangerous

High-Growth Companies

Early-stage or high-growth companies often use options instead of cash to preserve liquidity. The dilution can be massive:

• 50% annual stock grants (extreme, but seen in startups)
• Company appears to grow earnings 20% annually
• True growth (accounting for dilution): only 10%

Valuing on reported growth metrics overpays significantly.

Large-Cap Mature Companies

Mature companies with slowing growth use SBC to make EPS look better. A company growing earnings 3% annually but diluting shares 3% shows flat true per-share value, yet reports 3% EPS growth.

Comparing Companies Across SBC Levels

Problem: Apple vs. Microsoft

Metric	Apple	Microsoft
Net income	$100B	$80B
SBC	$10B	$8B
Basic shares	15B	2.4B
SBC dilution	2%	3%
Fully diluted shares	15.3B	2.47B
Reported EPS	$6.67	$33.33
Diluted EPS	$6.54	$32.40

Raw P/E comparison would be misleading because they have different SBC levels. Use diluted EPS for fair comparison.

Real-World Example: Overvaluation via Dilution

2020: Tesla

Tesla reported EPS growth of 30% annually, trading at 100x earnings. The headline: "Tesla is growing fast, justifying high valuation."

The hidden detail: Tesla issued massive amounts of stock to raise capital and pay employees. Fully diluted share count grew faster than earnings. True EPS growth was 15–20%, not 30%.

Investors who compared Tesla to mature companies using reported P/E were making an apples-to-oranges comparison. Tesla's SBC and dilution were much higher.

2000s: Tech Bubble

Many dot-coms appeared profitable via reported earnings, but once you added back SBC and options dilution, true earnings were negative. The options boom masked financial reality.

Adjusting Your Models

When building a valuation model:

1. Use diluted EPS as the baseline, not basic EPS
2. Project future SBC as a % of revenues (growth companies typically have 3–8% SBC; mature companies 1–3%)
3. Assume future buybacks will offset some dilution (but don't assume full offset; many companies don't)
4. Compare dilution rates across peers to see who's being honest about costs

The Treasury Stock Method vs. Actual Impact

Companies often assume tax proceeds from option exercises offset SBC dilution via buybacks. This is the "treasury stock method." But three issues:

1. Companies often don't buy back shares in down markets. Buybacks are discretionary.
2. Buyback timing matters. Buying at peak prices destroys value; buying at troughs creates value.
3. Tax benefits vary. High stock volatility = higher option value = larger tax deductions, but this varies.

The treasury stock method is useful for calculating diluted EPS (SEC-standard), but it's not a guarantee that dilution will be offset.

Common Mistakes

Ignoring SBC in tech companies. Tech companies use SBC heavily to retain talent. Ignoring it means overpaying by 15–25%.

Using reported EPS instead of diluted EPS. Always use diluted EPS for valuation comparisons.

Assuming all SBC will be repurchased. Buybacks are discretionary and often poorly timed. Don't assume full offset.

Forgetting that SBC is rising. Many companies are increasing SBC as a % of payroll (to retain talent during labor shortages). This will increase future dilution.

Not comparing SBC policies across competitors. Some companies are more generous with options than others; this affects relative valuations.

FAQ

Q: Should I exclude SBC from earnings entirely? A: No, you should include it in fully diluted share counts and calculate diluted EPS. You're not excluding the cost; you're properly accounting for it.

Q: Why do companies report both basic and diluted EPS? A: Basic EPS is legal earnings per share per the actual issued shares. Diluted EPS adds in-the-money options and convertibles. SEC requires both. Use diluted EPS for valuation.

Q: If a company buys back shares, does it offset SBC dilution? A: Partially, yes—if timed well. But buybacks are discretionary and often poorly executed. Better to assume only partial offset (30–50% of dilution).

Q: Is SBC a bigger problem for growth or mature companies? A: Both, but for different reasons. Growth companies use SBC to conserve cash and retain talent; mature companies use it to inflate reported EPS. Both are costly to shareholders.

Q: How do I estimate future SBC? A: Look at historical SBC as a % of revenue. For tech: 3–8% of revenue is typical. Model that percentage continuing.

Related Concepts

• Diluted Earnings Per Share (EPS): EPS adjusted for all in-the-money options and convertibles
• Share Buybacks: Used to offset dilution from options and accelerate EPS growth
• Equity Compensation: The total cost of all options, RSUs, and stock grants
• Intrinsic Value Per Share: Dependent on share count; dilution reduces intrinsic value per share
• Treasury Stock Method: The standard way to calculate diluted share count for EPS

Summary

Stock-based compensation is a real and often massive cost to shareholders that is frequently minimized in reported earnings. Adjusting for full dilution—using diluted rather than basic share counts—reveals the true earnings power per share. For high-SBC businesses (tech, growth companies), this adjustment can reduce reported P/E ratios by 20–30%, revealing much higher true valuations. Always use diluted EPS when comparing companies, and always model future SBC to ensure your valuation doesn't assume the dilution will stop. The most dangerous valuations come from companies that look cheap on reported metrics while diluting shareholders heavily—a trap that catches even sophisticated investors.

Next

Proceed to the next article: The True Meaning of Margin of Safety.