How to read a 13D (and a 13G)
When an investor passes 5% of a company’s shares, it has to tell the market, and far sooner than a 13F. A Schedule 13D is the version for investors who may want to change something at the company. It’s one of the most informative filings an investor can make.
13D or 13G?
- Schedule 13D: anyone who owns more than 5% of a class of a US-listed company’s voting shares and may try to influence it. Due within five business days of crossing 5%.
- Schedule 13G: a short form for passive holders. Large institutions that buy in the normal course of business file 45 days after the end of the quarter in which they crossed 5% (sooner if they pass 10%); other passive holders within five business days.
A holder that starts to want influence has to switch from a 13G to a 13D. So a switch, or a fund manager known for patient investing filing a 13D, is worth noticing. Since December 2024 both forms are filed in a structured format, which is how moatshark lists them on each manager’s page and on Latest moves.
The parts of a 13D that matter
- The cover page. Who is filing (often several related entities and people), how many shares they own and the percentage of the class. The percentage is based on the shares outstanding the company last reported.
- Item 3, source of funds. Whether the shares were bought with the fund’s own money or borrowed money, and how much they cost in total.
- Item 4, purpose of the transaction. The heart of the filing. It says whether the investor plans to seek board seats, push for a sale or break-up, change the dividend or buyback policy, or just hold. Boilerplate (“may engage with management”) is common; specific plans are the signal.
- Item 5, interest in the securities. The exact holding, and every trade in the last 60 days with dates and prices, so you can see what they paid.
- Item 6, contracts and arrangements. Options, swaps, voting agreements or deals with other holders. Derivatives here can mean the real exposure is bigger than the share count.
- Item 7, exhibits. Letters to the board, agreements and joint filing statements. A public letter to the board is often the most readable part.
Amendments
A 13D must be amended within two business days of any material change, and buying or selling 1% or more of the class counts as material. Amendments are numbered (13D/A No. 3 and so on). A run of amendments shows an investor steadily building or selling a position; one showing less than 5% means the holder has dropped below the threshold and no longer has to report.
Reading one well
- Compare the price paid with today’s price (Item 5): it tells you whether the investor is sitting on a gain or still building.
- Read Item 4 against the investor’s history. Some managers file 13Ds and rarely act; others always mean it.
- Check who else is on the cover page. Joint filers acting together are treated as one group for the 5% test.
- Look for a Form 4 too. Above 10% the investor is an insider and must report each trade within two business days. See insider buying.
Where to go next
- What a 13F shows, and what it misses.
- The latest 5% stake filings from the managers on moatshark.
- The SEC’s guide: fact sheet on the 2023 changes to Schedules 13D and 13G.