The RSU Problem
Why concentrated stock holders feel trapped
Restricted Stock Units (RSUs) are the primary equity compensation vehicle at most publicly traded companies. As RSUs vest over 3–4 year schedules, employees accumulate increasingly large concentrated positions in their employer's stock. According to E*TRADE's 2023 Stock Plan Participant Study, approximately 36% of equity compensation holders have more than 20% of their net worth in company stock. For senior employees and executives, concentration ratios of 30–50% are common.
The problem is clear: the stock that created wealth is now the source of risk. Selling to diversify triggers capital gains tax on all appreciation above the vesting price. For a senior engineer holding $3M in company stock with a $1M aggregate cost basis, selling would generate approximately $380K in federal and state capital gains tax. Most people don't sell — not because they've analyzed the risk, but because the tax bill feels like a penalty.
RSU Tax Mechanics
What's already been taxed — and what hasn't
RSU taxation occurs in two stages, and understanding this is critical before any transfer:
At Vesting: Ordinary Income
When RSUs vest, the full fair market value (FMV) of the shares on the vesting date is taxed as ordinary income. This appears on your W-2. Taxes are typically withheld by the company selling a portion of vesting shares ('sell to cover'). Your cost basis in the remaining shares equals the FMV at vesting.
At Sale: Capital Gains
When you sell vested RSU shares, you recognize capital gain or loss on the difference between the sale price and the FMV at vesting (your cost basis). If held more than 1 year from vesting: long-term capital gains (20% federal + 3.8% NIIT). If held less than 1 year: short-term (up to 37% federal).
"In-kind transfers of vested RSU shares are not sales. No capital gain is triggered. The shares move; the tax obligation does not change. The only taxable event is the eventual sale — which the §721(a) structure is designed to defer indefinitely."
Transfer Options
Three paths for concentrated RSU positions
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{{status}}Sell RSU shares at the brokerage, pay capital gains tax, reinvest the proceeds in a diversified portfolio. Clean and simple — but expensive for highly appreciated positions.
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{{status}}Transfer shares in-kind to a different brokerage via ACATS. No tax event. But you still hold concentrated stock — just at a different firm. The risk hasn't changed.
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{{status}}Contribute vested RSU shares to a partnership under §721(a). No sale, no capital gains. Partnership generates income on the position. You receive distributions while maintaining exposure to the underlying stock.
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Regulatory Constraints
Rule 144, Section 16, and blackout windows
Moving concentrated stock isn't just a tax question — it's a regulatory compliance question. Three rules commonly affect RSU holders at publicly traded companies:
| Rule | Who It Affects | Key Requirement |
|---|---|---|
| Rule 144 | Affiliates + holders of restricted securities | 6-month holding period (reporting cos), volume limits (1% outstanding or avg weekly volume), Form 144 for sales >5,000 shares or >$50K |
| Section 16(a) | Officers, directors, 10%+ owners | Form 4 due within 2 business days of any change in beneficial ownership |
| Blackout Windows | All employees with MNPI access | No trades typically 2–4 weeks before earnings; company-specific policies |
Critical distinction: an in-kind contribution to a partnership is not a 'sale' under Rule 144's volume limitations. However, for Section 16 officers and directors, the contribution is a reportable transaction — a Form 4 must be filed within 2 business days showing the disposition of direct ownership and acquisition of partnership interest. Blackout window policies vary by company; some allow in-kind transfers (no sale involved) while others restrict all transactions during the blackout period.
Restricted Securities: If your RSU shares are restricted securities under Rule 144, the restriction travels with the shares. The partnership (or any subsequent holder) remains subject to Rule 144's conditions. Embark's legal team evaluates Rule 144 applicability as part of the onboarding process for each concentrated stock contribution.
10b5-1 Planning
Pre-planned transactions for insiders
For Section 16 insiders and employees with material non-public information (MNPI), 10b5-1 plans provide a framework for pre-arranged transactions. Established during an open trading window when the insider is not in possession of MNPI, a 10b5-1 plan authorizes future transactions at predetermined prices, dates, or volumes.
While 10b5-1 plans are most commonly used for scheduled sales, they can also authorize in-kind contributions to a partnership structure. The plan establishes the terms during a compliant window; the actual transfer executes later regardless of the insider's information status. This can be particularly valuable for Section 16 officers who face limited open trading windows — sometimes only 4–6 weeks per quarter.
Recent SEC amendments (effective February 2023) added a mandatory cooling-off period of 90 days (or until the next earnings release, whichever is later) for 10b5-1 plans adopted by directors and officers. Plans must also include a certification that the insider is not aware of MNPI at adoption. These changes don't affect the viability of in-kind contributions — they simply require earlier planning.
The Embark Process
How concentrated RSU positions enter the SPV
Unlike traditional wealth management that requires selling to diversify, Embark's SPV structure accepts in-kind contributions under §721(a). The process is designed for the specific constraints that RSU holders face — trading windows, insider reporting, and Rule 144 compliance.
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Senior Engineer: 15,000 Shares MSFT ($6.3M, $1.9M Basis)
Sell to Diversify
$836,000
Federal + state capital gains + NIIT
$4.4M long-term gain. Federal 20% ($880K) + NIIT 3.8% ($167K) + CA 13.3% ($585K) less deductions. Net ~$5.46M to reinvest.
§721(a) Contribution to Embark SPV
$0
Tax at contribution
15,000 MSFT shares contributed in-kind. No sale, no gain. Carryover basis of $1.9M under §723. Partnership generates income on the $6.3M position. K-1 distributions begin.
The Result: Instead of paying $836K in taxes and reinvesting $5.46M, the full $6.3M position remains invested and generating income. The tax savings alone — $836K — represent income potential that would have been permanently lost.
FAQ
Frequently Asked Questions
Are vested RSUs taxed again when I transfer them?
No. RSUs are taxed as ordinary income at vesting — that tax has already been paid and is reflected on your W-2. Transferring vested RSU shares in-kind (via ACATS, DTC delivery, or §721(a) contribution) does not create an additional taxable event. Capital gains tax only applies when you eventually sell the shares. If you contribute them to a partnership under §721(a), no sale occurs, so no capital gains are triggered. Your cost basis (the FMV at vesting) carries over to the partnership under §723.
Can I contribute RSU shares during a blackout window?
It depends on your company's insider trading policy. Some companies restrict only 'sales' during blackout windows, in which case an in-kind contribution (not a sale) may be permitted. Others restrict all transactions involving company stock. If you're a Section 16 insider, the safest approach is to establish a 10b5-1 plan during an open window that authorizes the future in-kind contribution. Embark's legal team reviews your company's blackout policy as part of the evaluation process to determine compliant timing.
Does contributing RSU shares to a partnership trigger Rule 144?
Rule 144 governs the resale of restricted and control securities. An in-kind contribution to a partnership is not a 'sale' under Rule 144. However, the restriction itself travels with the securities — if your shares are restricted under Rule 144, the partnership holds restricted shares and must comply with Rule 144 conditions for any future sale. For most vested RSU shares at public companies that have been held beyond the 6-month holding period, Rule 144's volume limitations are the primary constraint. Embark evaluates Rule 144 applicability for every contribution.
What about the E*TRADE or Morgan Stanley platform? Can shares be transferred from there?
Yes. Shares held in equity compensation platforms (E*TRADE, Morgan Stanley at Work, Fidelity Stock Plan Services, Schwab Equity Awards) can be transferred via DTC delivery once they are vested and released from any holding restrictions. The process: request a DTC free delivery from the equity plan administrator to the receiving custodian's DTC participant account. Ensure any company-specific post-vesting holding requirements have been satisfied first. Some platforms may require you to move shares to a standard brokerage account at the same firm before initiating an external DTC delivery.
From Concentration to Income
Contribute RSU Shares to an Income-Generating Structure
Embark's §721(a) SPV accepts in-kind contributions of vested RSU shares. No sale, no capital gains, no MNPI concerns. Your concentrated position starts generating income instead of sitting idle.