Shareholders Can't Ignore US$614k Of Sales By Quantum-Si Insiders

Quantum-Si Incorporated Class A

Quantum-Si Incorporated Class A

QSI

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Even though Quantum-Si incorporated (NASDAQ:QSI) stock gained 12% last week, insiders who sold US$614k worth of stock over the past year are probably better off. Selling at an average price of US$1.12, which is higher than the current price, may have been the wisest decision for these insiders as their investment would have been worth less now than when they sold.

While we would never suggest that investors should base their decisions solely on what the directors of a company have been doing, logic dictates you should pay some attention to whether insiders are buying or selling shares.

Quantum-Si Insider Transactions Over The Last Year

Over the last year, we can see that the biggest insider purchase was by Independent Chairman Charles Kummeth for US$460k worth of shares, at about US$0.92 per share. So it's clear an insider wanted to buy, at around the current price, which is US$0.92. That means they have been optimistic about the company in the past, though they may have changed their mind. While we always like to see insider buying, it's less meaningful if the purchases were made at much lower prices, as the opportunity they saw may have passed. In this case we're pleased to report that the insider purchases were made at close to current prices.

Happily, we note that in the last year insiders paid US$564k for 609.89k shares. But insiders sold 547.86k shares worth US$614k. Over the last year we saw more insider selling of Quantum-Si shares, than buying. You can see the insider transactions (by companies and individuals) over the last year depicted in the chart below. By clicking on the graph below, you can see the precise details of each insider transaction!

insider-trading-volume
NasdaqGM:QSI Insider Trading Volume July 2nd 2026

If you like to buy stocks that insiders are buying, rather than selling, then you might just love this free list of companies. (Hint: Most of them are flying under the radar).

Quantum-Si Insiders Are Selling The Stock

Over the last three months, we've seen significant insider selling at Quantum-Si. Specifically, insiders ditched US$314k worth of shares in that time, and we didn't record any purchases whatsoever. This may suggest that some insiders think that the shares are not cheap.

Does Quantum-Si Boast High Insider Ownership?

Another way to test the alignment between the leaders of a company and other shareholders is to look at how many shares they own. I reckon it's a good sign if insiders own a significant number of shares in the company. Quantum-Si insiders own about US$33m worth of shares. That equates to 17% of the company. We've certainly seen higher levels of insider ownership elsewhere, but these holdings are enough to suggest alignment between insiders and the other shareholders.

So What Does This Data Suggest About Quantum-Si Insiders?

Insiders sold stock recently, but they haven't been buying. Despite some insider buying, the longer term picture doesn't make us feel much more positive. Insiders own shares, but we're still pretty cautious, given the history of sales. We'd practice some caution before buying! In addition to knowing about insider transactions going on, it's beneficial to identify the risks facing Quantum-Si. To assist with this, we've discovered 5 warning signs that you should run your eye over to get a better picture of Quantum-Si.

If you would prefer to check out another company -- one with potentially superior financials -- then do not miss this free list of interesting companies, that have HIGH return on equity and low debt.

For the purposes of this article, insiders are those individuals who report their transactions to the relevant regulatory body. We currently account for open market transactions and private dispositions of direct interests only, but not derivative transactions or indirect interests.