Purchase Agreement Attorney • Oak Brook, Illinois

Purchase Agreement Attorney in Oak Brook

By Alex Lubyansky · Managing Partner

Last updated April 28, 2026

The purchase agreement is the document that defines your deal. Our Oak Brook purchase agreement attorneys draft, review, and negotiate asset purchase agreements (APAs) and stock purchase agreements (SPAs) for business acquisitions across Corporate Headquarters, Finance, Professional Services, protecting your interests with precision built on 15+ years of transaction experience.

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Selective M&A Practice

Personal Attention

Senior Counsel on Every Deal

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Share the basics. Alex reviews every inquiry personally.

What We Do

Alex Lubyansky handles purchase agreement law work for buyers and sellers in Oak Brook and across the country. Here is what that looks like:

Asset purchase agreement (APA) drafting and negotiation
Stock purchase agreement (SPA) drafting and negotiation
Representations and warranties tailored to your deal
Indemnification, escrow, and holdback structuring
Closing conditions and deliverables coordination
SBA-compliant purchase agreement documentation
Seller financing and earnout provisions
Ancillary documents including non-competes, transition agreements, and employment agreements

Who We Serve

We work best with people who know what they want and are ready to move:

Buyers who need an asset purchase agreement drafted from scratch
Sellers reviewing a buyer's proposed purchase agreement
SBA-financed buyers who need lender-compliant transaction documents
Business brokers whose clients need legal review of purchase terms
Private equity firms requiring institutional-quality deal documentation
Entrepreneurs closing their first acquisition and needing experienced counsel

See If Your Deal Is a Fit

Tell us what you are working on. We respond within one business day.

Our Process

A structured, methodical approach to purchase agreement law

Deal Terms Review

We review your letter of intent or proposed deal terms, identify gaps and risks, and develop a drafting strategy that protects your position from the first page.

Agreement Drafting

Managing Partner Alex Lubyansky drafts or marks up the purchase agreement, structuring representations, warranties, indemnification, and closing mechanics to match your specific deal.

Negotiation

We negotiate directly with opposing counsel on every material term, from purchase price adjustments and escrow amounts to survival periods and indemnification caps.

Ancillary Documents

We prepare all supporting documents including disclosure schedules, non-compete agreements, transition services agreements, and any required third-party consents.

Closing Execution

We manage the closing checklist, coordinate signature pages and fund flows, and ensure every condition is satisfied so your deal closes cleanly and on schedule.

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What Happens After You Submit

We don't take every matter. Here is what happens when you reach out.

Personal Review (Within 24 Hours)

Alex reviews your transaction details personally. No intake coordinators, no junior associates screening your submission.

Fit Assessment

We evaluate whether your deal aligns with our practice. Not every matter is a fit, and we will tell you directly if it is not.

Initial Conversation

If there is alignment, Alex schedules a direct call to discuss your transaction, timeline, and objectives.

Clear Engagement Terms

Before any work begins, you receive a written engagement letter with defined scope, timeline, and fee structure. No surprises.

Request Your Oak Brook Engagement Assessment

Alex Lubyansky handles every purchase agreement law engagement personally.

15+ years of M&A experience. Nationwide. One attorney on every deal.

Request Engagement Assessment

We review every transaction inquiry within one business day.

Questions to Ask Any M&A Attorney Before Hiring

Use these before you call any firm, including ours.

1. "Who will actually handle my transaction?"

At many firms, a partner sells the work and a junior associate does it. Ask for the name of the attorney who will draft and negotiate your documents.

2. "How many M&A transactions has the lead attorney closed in the past 12 months?"

Volume indicates current, active deal experience, not just credentials from years ago.

3. "What is your experience with my deal size and industry?"

A $500K SBA acquisition and a $50M PE deal require different skill sets. Make sure the attorney has handled transactions similar to yours.

4. "Will you coordinate with my CPA, financial advisor, and broker?"

M&A transactions require a team. Your attorney should work with your other advisors, not in a silo.

5. "How do you handle post-closing disputes?"

Reps, warranties, and indemnification claims surface months after closing. Ask whether the firm handles post-closing litigation or refers it out.

6. "What is your fee structure, and what drives cost?"

Hourly, flat fee, or hybrid. Ask what factors increase legal costs so there are no surprises.

Frequently Asked Questions

Common questions from Oak Brook clients

What is the difference between an APA and an SPA?

An asset purchase agreement (APA) lets you select specific assets and liabilities to acquire, giving you more control over what transfers. A stock purchase agreement (SPA) transfers ownership of the entire entity, including all assets and liabilities. The right choice depends on tax considerations, liability exposure, and the specific deal structure your transaction requires.

Why do I need an attorney for my purchase agreement?

The purchase agreement is the single most important document in your deal. It allocates risk between buyer and seller through representations, warranties, indemnification, and closing conditions. A poorly drafted agreement can leave you exposed to liabilities, overpayment, or post-closing disputes that could have been prevented.

How long does it take to draft a purchase agreement?

A first draft typically takes 5 to 10 business days depending on deal complexity. Negotiation and revisions can add 2 to 4 weeks. Acquisition Stars is built for speed, and Managing Partner Alex Lubyansky keeps the drafting process moving so your deal stays on track.

What should a purchase agreement include?

A well-drafted purchase agreement addresses purchase price and payment terms, asset or stock transfer mechanics, representations and warranties from both parties, indemnification obligations and caps, closing conditions and deliverables, post-closing adjustments, and non-compete and transition terms. Every provision should be tailored to your specific transaction.

Can you review a purchase agreement the other side drafted?

Yes. Reviewing and marking up the other side's draft is one of the most common engagements we handle. We identify terms that are unfavorable, missing protections, and hidden risks, then negotiate revisions that bring the agreement in line with your interests and standard market terms.

What can I expect during an initial consultation in Oak Brook?

During your confidential initial consultation in Oak Brook, we'll discuss your purchase agreement law needs, review your current situation, assess potential challenges specific to Illinois, and outline a clear path forward. We'll explain our process, answer your questions, and determine if we're the right fit for your needs.

Do you work with companies outside of Oak Brook?

Yes, we represent clients nationwide while maintaining a strong presence in Oak Brook. Our managing partner handles purchase agreement law matters across all 50 states, coordinating with local counsel where state-specific requirements apply.

Need Specific Guidance?

Submit your transaction details for a preliminary assessment by our managing partner

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Ready to Discuss Your Oak Brook Deal?

Submit transaction details and Alex will respond directly.

M&A Market: Oak Brook & the Chicago Metro

Chicago is the Midwest's M&A powerhouse, with deep deal activity in manufacturing, food & beverage, financial services, and healthcare. The city's central location and transportation infrastructure make it a hub for logistics and distribution company acquisitions. Chicago's robust private equity community - including firms like GTCR, Madison Dearborn, and Duchossois Capital - drives significant lower middle-market deal flow.

Top M&A Sectors Near Oak Brook

Manufacturing
Food & Beverage
Financial Services
Healthcare
Logistics & Distribution

Deal Environment

Chicago offers a balanced deal market with strong fundamentals - valuations are more reasonable than coastal markets while target quality remains high. The region's manufacturing base creates consistent opportunities for PE-backed platform builds.

Why Acquire in the Chicago Area

The Chicago metro area's diversified economy and central location make it ideal for platform acquisitions with national expansion potential. The region's deep talent pool in engineering, finance, and operations supports post-acquisition growth.

Illinois Legal Considerations

Illinois enacted strict non-compete reform in 2022 - agreements are unenforceable for employees earning under $75,000 (increasing annually), and employers must advise employees to consult counsel before signing, affecting how buyers retain key personnel post-acquisition.

Local Market Context

Oak Brook M&A Market

Chicago-Naperville-Elgin, IL-IN-WI MSA · MSA population 9.6M

MSA Population (2024)

9.6M

U.S. Census Bureau

Top Industry Concentration

1 financial services and trading
2 food and agribusiness
3 logistics and transportation

Chicago is the dominant Midwest M&A hub, with particular strength in financial services (CME Group, options and derivatives markets), food and agribusiness, logistics, and industrial manufacturing. The city's position as the primary Midwest rail and logistics hub gives it outsized importance in supply chain and distribution company transactions. Mid-market buyout activity by Chicago-headquartered private equity firms is a consistent feature of the deal landscape.

Major Oak Brook Employers and Deal Anchors

CME Group
Boeing
United Airlines
Caterpillar
Walgreens Boots Alliance
Advocate Health

Transit and Logistics

O'Hare International Airport is one of the busiest in the world. Chicago is the largest US rail freight hub. Union Pacific, BNSF, and CSX all converge here, making logistics transactions particularly active.

Recent Oak Brook Deal Signal (2024-2025)

Boeing's ongoing restructuring and supply chain rationalization generated significant aerospace supplier M&A interest in the broader Chicago metro in 2024, while Chicago-based PE firms continued active mid-market healthcare and industrial deals.

Source (accessed 2026-04-27)

Local Regulatory Notes for Purchase Agreement Law

Illinois has a Business Corporation Act with specific merger notification requirements. Chicago imposes a transaction tax on certain securities trades executed through Chicago exchanges.

Illinois Legal Considerations for Purchase Agreement Law

Non-Compete Laws

Restricted by salary threshold ($75,000+). Mandatory 14-day review period.

Filing Requirements

Entity mergers and conversions are filed with the Illinois Secretary of State, Business Services Department. Bulk asset purchases require notification to the Department of Revenue and obtaining Form ST-4 clearance. The Illinois Securities Department may need to be notified for certain stock transactions.

Key Illinois Considerations

Illinois's Freedom to Work Act imposes detailed procedural requirements (14-day review period, written advisement to consult counsel) that must be evaluated when assessing a target company's non-compete portfolio
Chicago imposes its own transaction taxes and licensing requirements that can affect M&A deal costs for businesses operating in the city
Illinois does not allow combined unitary reporting, which means buyers need to evaluate each entity in a target group separately for state tax purposes

Illinois Bar Authority

Illinois State Bar Association. Voluntary bar. The Illinois Attorney Registration and Disciplinary Commission handles mandatory registration separately.

Bar association website

Illinois Federal and Business Courts

Federal districts: N.D. Ill., C.D. Ill., S.D. Ill.

Business court: Circuit Court of Cook County Commercial Calendar (established 1993) Chicago-based commercial calendar handles complex business disputes in Cook County. Illinois Freedom to Work Act (820 ILCS 90) governs non-compete and non-solicitation agreements.

Illinois M&A Market Context

Chicago is a top-five U.S. M&A market, with particular strength in financial services, food and consumer products, and industrial manufacturing transactions.

Watchpoints

Common Oak Brook Purchase Agreement Law Pitfalls

These are the items we see derail purchase agreement law transactions in the Oak Brook market. Each one is rooted in current statutory law, recent legislative changes, or recurring patterns from the deals Alex has handled.

Illinois non-compete enforcement and earn-out exposure

State legal framework

Restricted by salary threshold ($75,000+). Mandatory 14-day review period.

"The most expensive deals aren't the ones with high price tags. They're the ones where buyers skipped the 90-minute assessment because they fell in love with the highlight reel."
Alex Lubyansky · Alex LinkedIn Published (Notion library)

Oak Brook local regulatory exposure

Local regulatory

Illinois has a Business Corporation Act with specific merger notification requirements. Chicago imposes a transaction tax on certain securities trades executed through Chicago exchanges.

Illinois regulatory framework attorneys flag at LOI

State statute

Securities regulated by Illinois Securities Department within the Office of the Secretary of State (ilsos.gov/securities). Illinois has a robust Blue Sky framework; Reg D notice filings required. Illinois is an active state enforcement jurisdiction.