A CEO's Open-Market Buy Puts THM and LSAK in Focus

International Tower Hill Mines' chief executive bought shares of the company on Wednesday, one of two insider purchases flagged in a Monday, September 21, 2026 insider buying report that also covered LSAK, with THM last trading at 2.67, up 2.69% on the day.

Insider buying is one of the few corporate disclosures that comes with a built-in interpretation. Executives sell for all kinds of reasons — tax bills, diversification, a house, a divorce, a pre-arranged plan that fires automatically. They buy for one: they think the stock is worth more than the price on the screen. That asymmetry is why open-market purchases by officers and directors get read more closely than almost any other routine filing.

A Monday, September 21, 2026 insider buying report flagged two of them. At International Tower Hill Mines (THM), the company's chief executive officer bought shares on Wednesday. The second name in the report was LSAK.

Where the two stocks were trading as the report landed

Both are small, low-priced securities, which is worth stating up front because it changes how a purchase should be read. As of 15:25:36 GMT on Monday, September 21, 2026, THM last traded at 2.67, up 2.69% against a previous close of 2.60, inside a session range of 2.61 to 2.81. The stock was running roughly 5% below its intraday high at that mark, having given back part of an early advance.

LSAK was unchanged at 4.20, matching its prior close, with a session range of 4.17 to 4.25 — a band worth about 1.9% of the previous close. That is a quiet tape for a stock that had just been named in an insider buying screen, and it is a useful reminder that these disclosures often arrive without any visible price reaction at all.

The Nasdaq Markets report framed the two purchases around the familiar logic that there are many reasons to sell and only one to buy.

Why a CEO purchase reads differently at a development-stage miner

International Tower Hill Mines is a gold exploration and development company, and that category has a particular relationship with insider buying. Pre-revenue miners are financed by issuing equity. Every round dilutes existing holders, and shareholders watch closely for signals that management is willing to take dilution risk alongside them rather than simply administer it.

A chief executive stepping into the open market — as opposed to receiving options or restricted stock as compensation — is the cleanest version of that signal. The executive is spending after-tax cash at a market price, on the same terms available to any other buyer, and accepting the same downside. The purchase also puts the buyer into a restricted trading posture going forward; short-swing profit rules mean an insider who buys and then sells within six months can be forced to disgorge the gain.

None of that makes the shares cheap. For a development-stage gold company, the value of the asset is a function of the metal price, the capital cost of building a mine, permitting, and access to financing — variables a single executive purchase does not move. What the buy does is tell the market where the person with the most information is willing to put personal money.

How to size an insider buy before you act on it

The useful questions about any insider purchase are mechanical, and they are answered in the filing rather than in the headline:

• How large was it relative to the buyer's existing stake? An executive adding a few percent to a position already worth many times their salary is a different event from one establishing a first meaningful holding.
• Was it an open-market purchase or an option exercise? Exercising in-the-money options at a strike set years ago is compensation being realized, not a fresh vote of confidence.
• Is the buyer alone, or is it a cluster? Several officers and directors buying in the same window has historically carried more weight than one buyer acting on their own.
• Where does the purchase price sit versus the current quote? A buy executed on Wednesday at a price now well below the screen means the market has already moved; one executed above it means the insider is underwater on the trade so far.

Price matters here because both names trade in low single digits. On a 2.67 stock, a move of a few cents is a percentage swing that would be noise on a large-cap. Position sizing and liquidity deserve as much attention as the signal itself.

The backdrop: a firm broad tape on Monday

The insider report landed on a strong session for the major U.S. benchmarks. The S&P 500 tracker (SPY) was at $769.97, up 1.09%, with a day range of $766.03 to $770.18. The Nasdaq 100 tracker (QQQ) was stronger at $736.31, up 2.06%, and the Dow tracker (DIA) added 0.52% at $518.54. The gap between the Nasdaq and Dow moves — nearly a point and a half of relative performance — points to a growth-led day rather than a broad risk-on lift.

Against that, THM's 2.69% gain looks like participation rather than a reaction to the filing, and LSAK's flat print looks like a stock that ignored the tape entirely. Both observations argue for patience: the market's verdict on these purchases, if it delivers one, will show up over weeks rather than in a single session.

What to watch from here

The next markers are straightforward. First, the filings themselves — share counts, execution prices and the resulting total holdings, which determine whether these were token buys or substantive ones. Second, whether other officers and directors follow; clustered buying is the version of this signal with the longest track record. Third, for International Tower Hill specifically, anything touching project economics or financing, since those are the inputs that would justify a chief executive's conviction. And for LSAK, whether a stock that did not move on the news begins to trade with more volume.

Insider buying is a starting point for research, not a substitute for it. The person buying knows the business better than the market does; they do not know the price.

Key facts

• THM last price: 2.67, +2.69% (as of 15:25:36 GMT, Sep 21, 2026)
• LSAK last price: 4.20, unchanged on the day (same timestamp)
• The purchase: International Tower Hill Mines' CEO bought shares on Wednesday
• Market backdrop: SPY $769.97 (+1.09%), QQQ $736.31 (+2.06%), DIA $518.54 (+0.52%)

Frequently asked questions

What did the insider report say about THM?

The Monday, September 21, 2026 insider buying report flagged that the chief executive officer of International Tower Hill Mines bought shares of the company on Wednesday. It was one of two purchases highlighted, the other involving LSAK. The report did not appear with further detail in the summary available, so share counts and execution prices come from the underlying filings.

Where is THM trading now?

As of the last trade at 15:25:36 GMT on Monday, September 21, 2026, THM changed hands at 2.67, up 2.69% from a previous close of 2.60. The session range ran from 2.61 to 2.81, meaning the stock had pulled back roughly 5% from its intraday high by that point in the day.

How did LSAK trade on the day of the report?

LSAK was unchanged at 4.20, exactly matching its previous close, with an intraday range of 4.17 to 4.25. That band is worth about 1.9% of the prior close — a quiet session, and an indication that the market had not repriced the shares in response to the insider disclosure at that point.

Why do investors treat insider buying differently from insider selling?

Executives sell for many reasons unrelated to their view of the business: taxes, diversification, personal expenses, or pre-scheduled trading plans. Buying in the open market with personal, after-tax money has essentially one motive — the expectation of a gain. That asymmetry is why purchases by officers and directors attract closer attention than sales of similar size.

Does a CEO purchase mean the stock is undervalued?

No. It tells you where a well-informed person is willing to commit personal capital, which is meaningful but not decisive. Insiders know the business better than outsiders; they do not necessarily know the right price. The size of the buy relative to the insider's existing stake, and whether other officers buy too, matter more than the headline.

What is International Tower Hill Mines?

International Tower Hill Mines, trading under the ticker THM, is a gold exploration and development company. Businesses at that stage typically have no revenue and fund themselves by issuing equity, which dilutes existing shareholders. That financing structure is one reason investors in the sector watch management's own share purchases especially closely.

Sources

• Monday 9/21 Insider Buying Report: THM, LSAK — Nasdaq Markets