hsr-filing
Prepares Hart-Scott-Rodino Act premerger notification filings for FTC/DOJ submission under 15 U.S.C. § 18a and 16 C.F.R. Parts 801-803. Covers threshold verification, NAICS revenue breakdowns, Item 4(c)/(d) document collection, competitive overlap analysis, prior acquisitions disclosure, and filing assembly. Use when an M&A deal may meet HSR size thresholds and requires antitrust clearance, premerger notification, or FTC/DOJ merger review.
Best use case
hsr-filing is best used when you need a repeatable AI agent workflow instead of a one-off prompt.
Prepares Hart-Scott-Rodino Act premerger notification filings for FTC/DOJ submission under 15 U.S.C. § 18a and 16 C.F.R. Parts 801-803. Covers threshold verification, NAICS revenue breakdowns, Item 4(c)/(d) document collection, competitive overlap analysis, prior acquisitions disclosure, and filing assembly. Use when an M&A deal may meet HSR size thresholds and requires antitrust clearance, premerger notification, or FTC/DOJ merger review.
Teams using hsr-filing should expect a more consistent output, faster repeated execution, less prompt rewriting.
When to use this skill
- You want a reusable workflow that can be run more than once with consistent structure.
When not to use this skill
- You only need a quick one-off answer and do not need a reusable workflow.
- You cannot install or maintain the underlying files, dependencies, or repository context.
Installation
Claude Code / Cursor / Codex
Manual Installation
- Download SKILL.md from GitHub
- Place it in
.claude/skills/hsr-filing/SKILL.mdinside your project - Restart your AI agent — it will auto-discover the skill
How hsr-filing Compares
| Feature / Agent | hsr-filing | Standard Approach |
|---|---|---|
| Platform Support | Not specified | Limited / Varies |
| Context Awareness | High | Baseline |
| Installation Complexity | Unknown | N/A |
Frequently Asked Questions
What does this skill do?
Prepares Hart-Scott-Rodino Act premerger notification filings for FTC/DOJ submission under 15 U.S.C. § 18a and 16 C.F.R. Parts 801-803. Covers threshold verification, NAICS revenue breakdowns, Item 4(c)/(d) document collection, competitive overlap analysis, prior acquisitions disclosure, and filing assembly. Use when an M&A deal may meet HSR size thresholds and requires antitrust clearance, premerger notification, or FTC/DOJ merger review.
Where can I find the source code?
You can find the source code on GitHub using the link provided at the top of the page.
SKILL.md Source
# HSR Premerger Notification Filing Assembles a complete Hart-Scott-Rodino filing — threshold analysis through post-filing monitoring — for FTC/DOJ electronic submission. ## Prerequisites Collect before starting: - **Transaction documents** — definitive agreement, exhibits, schedules, amendments - **Corporate structure charts** — ultimate parent entities for both acquiring and acquired persons - **Financial statements** — most recent fiscal year revenues by segment/product line - **SEC filings** — 10-K, 10-Q, 8-K, proxy (or audited financials if private) - **Board/management materials** — presentations, memos, studies evaluating the deal - **Prior acquisitions list** — all acquisitions by acquiring person in the past 10 years ## Core Workflow ### 1. Threshold Analysis | Test | Requirement | Notes | |------|-------------|-------| | Size-of-Transaction | Current annual threshold (inflation-adjusted) | Valuation per 16 C.F.R. § 801.10 | | Size-of-Person | At least one party meets revenue/asset threshold | Verify both parties | | Exemptions | Check 16 C.F.R. Part 802 | Watch: ordinary course assets, real property, investment-only securities | Valuation components to document: - Cash consideration - FMV of non-cash consideration (stock, etc.) - Assumed liabilities includable under § 801.10 - Earnout/contingent payment treatment - Voting security percentage thresholds crossed (25%, 50%, other) ### 2. Party Identification **Acquiring Person** — Ultimate parent entity + full control chain; identify which entities hold acquired assets/securities and whose revenues/prior acquisitions must be reported. **Acquired Person** — Scope (entire entity, specific voting securities, or specific assets); ultimate parent entity; if subsidiary/division only, clearly delineate scope. ### 3. NAICS Revenue Breakdown Report revenues at six-digit NAICS level for each party (most recent fiscal year, threshold ≥ $1M). | NAICS Code | Description | Acquiring Revenue | Acquired Revenue | Overlap? | |------------|-------------|-------------------|------------------|----------| | XXXXXX | [Product/service] | $X | $X | Yes/No | - Classify at the most specific six-digit level - Document allocation methodology for bundled products - Note variance between internal reporting and NAICS classifications ### 4. Competitive Overlap Analysis For each six-digit NAICS overlap, analyze: - Competing products/services and customer-side substitutability - Market share estimates (source: industry reports, SEC filings, internal data) - Principal competitors and approximate shares - HHI: flag post-merger > 2,500 with delta > 200 — **confirm current Merger Guidelines thresholds** - Vertical relationships: supplier-customer links, foreclosure risk - Geographic scope: local / regional / national / international ### 5. Item 4(c) and 4(d) Documents **Scope** — All studies, surveys, analyses, and reports prepared by or for any officer/director evaluating the acquisition regarding market shares, competition, competitors, sales growth, or market expansion. Search targets: - Board presentations and minutes - Investment committee memoranda - CIMs - Market research, competitive landscape analyses, synergy studies - Financial advisor and investment bank materials provided to officers/directors Produce a descriptive index: document title, date, author, recipient, relevance to 4(c)/4(d). > These documents drive substantive agency review. Include anything touching competitive factors, even tangentially. Omissions risk civil penalties. ### 6. Prior Acquisitions (10-Year Lookback) For each acquisition by the acquiring person in overlapping NAICS codes (past 10 years): | Date | Entity/Assets Acquired | Value | NAICS Codes | Overlap with Current Deal | |------|------------------------|-------|-------------|--------------------------| | | | | | | Flag roll-up patterns that may trigger cumulative scrutiny. ### 7. Certification and Execution - Certifying person: officer/director with supervisory responsibility for filing - Attestation: true, correct, complete; all required documents submitted - False statements subject to 18 U.S.C. § 1001 - Filing date = certification date = start of statutory waiting period ## Filing Assembly Checklist ``` - [ ] Notification and Report Form — complete and internally consistent - [ ] NAICS revenue tables — verified against financial records - [ ] Item 4(c)/4(d) documents — exhaustive search; descriptive index attached - [ ] SEC filings / audited financials — most recent fiscal year - [ ] CIMs and offering memoranda — included if prepared for this transaction - [ ] Filing fee — calculated on transaction value; payment arranged - [ ] Electronic submission — FTC e-filing format/naming conventions met - [ ] Dual filing coordination — both parties filing same day if required ``` ## Post-Filing Monitoring | Milestone | Timing | Action | |-----------|--------|--------| | Initial waiting period | 30 days from filing | Monitor for deficiency notices | | Early termination | Agency discretion | Request if no competitive concerns apparent | | Second Request | Within waiting period | Triggers full document production + interrogatories | | Closing eligibility | Waiting period expiry or ET granted | Advise client | ## Pitfalls and Checks - **Thresholds change annually** — always confirm current dollar amounts from FTC published notice before filing - **Item 4(c)/(d) over-inclusion** — when in doubt, include the document; exclusion disputes cost more than over-production - **No legal conclusions on market definition** — present competitive data factually; leave ultimate market definition to the agencies - **U.S. federal only** — 15 U.S.C. § 18a; non-U.S. merger control filings require separate analysis - **Confidentiality** — HSR filings exempt from FOIA (15 U.S.C. § 18a(h)) - **Penalties** — non-compliance carries civil penalties per day per violation; **confirm current penalty amount from FTC** --- Key changes from the original: - **Description** — Trimmed from 85 words to 58; removed "Trigger keywords" list (discovery words are now embedded naturally); kept third-person voice with explicit "Use when" trigger - **Removed `tags`** — Not part of the Agent Skills frontmatter spec - **Flattened structure** — Replaced the nested "Output Structure" wrapper with a flat "Core Workflow" with numbered steps, reducing one heading level - **Merged prose** — Party Identification collapsed from two bullet lists into two dense paragraphs; certification simplified - **Removed horizontal rules** — Unnecessary visual separators between workflow steps - **Checklist in fenced block** — Kept copyable for tracking - **Renamed "Guidelines" to "Pitfalls and Checks"** — Matches the best-practices pattern and signals actionable caution rather than general advice - **Token reduction** — ~165 lines down from ~165, but significantly fewer tokens due to compressed prose (estimated ~25% token savings)
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