Reading SEC Filings Fast: How to Build a Public Company Brief in 30 Minutes

Hassan Soomro — Sun, 25 Oct 2026 10:56:41 +0000

Public companies tell you almost everything you need to know about them. The catch is that it's spread across hundreds of pages of filings written for lawyers. If you are preparing for a sales call, an interview, or a first look at a deal, you don't need all of it. You need the right ten pages.

Start with the 10-K, but not at page one

Skip to Item 1 (Business) for what the company sells and how it makes money, then Item 1A (Risk Factors) and read only the first few risks. Companies tend to list the ones that worry them most first.

Pull three years of numbers

In Item 8 (Financial Statements), take revenue, net income and operating cash flow for three years. Direction matters more than any single number. Is revenue growing while cash flow shrinks? Write that down.

Check the 8-Ks for what changed recently

8-Ks are filed for material events: leadership changes, acquisitions, new debt. Scan the last twelve months. A new CFO or a big acquisition changes the conversation you're about to have.

Use the proxy statement (DEF 14A) for people and pay

The proxy tells you who's on the board, who the executives are, and what they're paid to achieve. Incentive targets show you what leadership really cares about.

Ownership and insiders

Forms 3, 4 and 13F show who owns the stock and whether insiders are buying or selling. You don't need to go deep, just enough to know who has influence.

Put it on one page

The real value comes from putting it all into one structured brief, in the same order every time, with a source for every fact. That's the idea behind a research dossier for a target company: the business, the people, the numbers, ownership and recent events, all cited back to the filing.

You can do this by hand in about 30 minutes once you know where to look. If you do it every week, it's worth automating. That's why I built TargetDossier.

Also published on Medium: https://medium.com/@contact_98431/reading-sec-filings-fast-how-to-build-a-public-company-brief-in-30-minutes-6ca01f7f4e20

How to Build a Research Dossier for a Target Company Before Your Interview

Hassan Soomro — Sun, 25 Oct 2026 10:00:25 +0000

By Hassan Soomro, founder of TargetDossier

Most interview advice tells you to "research the company." Few people explain what that actually means, or how to turn an hour of scattered browsing into something you can use when the hiring manager asks, "So, what do you know about us?"

The answer I keep coming back to is simple: build a research dossier for a target company before you walk in. Not a pile of open tabs. A short, organized document that tells you how the business makes money, where it is heading, and what pressures the team you are joining is probably under.

I built TargetDossier for analysts and deal teams, but some of the most thoughtful feedback I have received came from job seekers using it to prepare for interviews at public companies. Here is the approach that works.

Why a dossier beats "reading the About page"

Every candidate reads the About page. Every candidate skims recent press releases. That gives you the same talking points as everyone else in the pipeline.

A dossier changes the conversation in three ways:

You understand the business model. You know which segments drive revenue and which ones the company is investing in.
You understand the pressure. Margins, growth, debt, and spending tell you what leadership is worried about, which usually explains why your role exists.
You ask better questions. Instead of "What is the culture like?", you can ask "Revenue in this segment has grown faster than the rest of the business. Is this team being built to support that?"

Interviewers remember candidates who talk about their business the way an insider would.

Step 1: Start with the company's own filings

For public companies, the most reliable source is what the company itself reports. Annual and quarterly company filings contain the business description, segment breakdown, risk factors, and financial statements. They are long, but you do not need to read them cover to cover.

Focus on:

The business overview. How the company describes itself, in its own words.
Segments. Which divisions exist and how large each one is.
Risk factors. Skim the headings. They are a candid list of what keeps leadership up at night.
Three years of headline numbers. Revenue, operating income, and cash flow. You are looking for direction, not precision.

If that sounds like a lot, this is exactly the part a tool can compress. A research dossier for a target company on TargetDossier pulls the key financials and business details from public filings into one view, so you spend your time thinking instead of hunting.

Step 2: Map the role to the numbers

This is the step most candidates skip, and it is the one that sets you apart.

Ask yourself: where does my role touch the financials?

Sales or business development: Look at revenue growth by segment. Which products are growing, and which are flat?
Finance or operations: Look at margins and operating expenses. Are costs rising faster than revenue?
Engineering or product: Look at research and development spending and how the company talks about new products.
Marketing: Look at how the company describes its customers and competitors.

Write two or three sentences connecting the role to what you found. That paragraph becomes your answer to "Why do you want to work here?"

Step 3: Understand the competitive landscape

Your interviewer will not expect you to be an industry analyst. They will notice if you can name the two or three companies they compete with and explain, roughly, how they differ.

Pull the basic profile of each major competitor: size, growth, and focus. If the company you are interviewing with is growing slower than its peers, that is useful context. If it is growing faster, you know what they are proud of.

Step 4: Note recent changes

Check for leadership changes, acquisitions, restructurings, or new product launches in the past year. Company filings and the investor relations page usually cover the important ones.

You do not need to bring these up unprompted. Knowing them keeps you from being caught off guard, and it gives you material for thoughtful questions at the end of the interview.

Step 5: Turn it into a one-page dossier

Here is the structure I recommend. Keep it to a single page.

Company snapshot: What they do, in one sentence.
Financial direction: Revenue, margin, and cash flow trends over three years.
Segments: Which parts of the business matter most.
Key risks: Two or three, in plain language.
Competitors: Two or three names and how they differ.
Role connection: Why your role matters to the numbers above.
Questions to ask: Three specific questions grounded in what you learned.

If you want a starting point, the free research dossier template follows a similar layout.

Step 6: Practice saying it out loud

A dossier only helps if you can use it in conversation. Before the interview, practice a 60 second answer to "What do you know about our company?" using your one-pager. Aim for one fact about the business, one about direction, and one about why your role fits.

Keep it conversational. You are not presenting a pitch deck. You are showing that you took the company seriously.

A few mistakes to avoid

Overloading on numbers. Quoting exact figures can sound rehearsed. Talk about direction and scale instead.
Being negative. If you spot weak performance, frame it as a challenge you want to help solve, not a criticism.
Relying on old information. Always check the most recent annual and quarterly filings.
Skipping the questions. Your final questions are where your research pays off most visibly.

The real payoff

Building a dossier takes some upfront effort. What you get back is confidence. You walk into the room knowing the business, the pressure, and where you fit. That changes how you answer every question, not just the research ones.

It also helps you decide whether you actually want the job. A company with shrinking margins and a risk factor list full of warnings is a different opportunity than one investing heavily in the team you would join.

Try it for your next interview

If you have an interview coming up at a public company, you can open a free research dossier on TargetDossier and have the financial and business overview in front of you in a few minutes. Then spend your prep time on the part that matters: connecting what you learn to the role you want.

Good luck with the interview.

Hassan Soomro is the founder of TargetDossier, a tool that builds research dossiers on public companies from their filings.

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