Here is a company-by-company review of the most material insider trading disclosed on Monday, April 20, 2026, drawing solely from the related SEC filings and the trading details companies reported.
Top buys
Broadwood Partners, L.P. - Insight Molecular Diagnostics (IMDX)
Broadwood Partners, L.P., which is identified in regulatory filings as a substantial shareholder of Insight Molecular Diagnostics (NASDAQ:IMDX), expanded its holding via a sequence of open-market purchases recorded between April 16 and April 20, 2026. The total outlay for these transactions was $652,875. The filings break down the purchases as follows: on April 16, Broadwood acquired 102,057 shares at a weighted average price of $3.4457 per share, with individual trade prices spanning $3.20 to $3.59; on April 17, it bought 40,114 shares at a weighted average of $3.5711 per share, at prices ranging from $3.45 to $3.84; and on April 20, the investor added 40,690 shares at a weighted average of $3.8822 per share, with transaction prices between $3.75 and $3.99. The stock is trading at $3.99 and has returned 33% over the previous week while remaining down 46.8% year-to-date. InvestingPro analysis cited in the filings estimates a Fair Value of $3.58 for IMDX; the company carries a market capitalization of $128.35 million and operates with a moderate level of debt.
John W. Allison - Home BancShares Inc. (HOMB)
John W. Allison, chairman and chief executive officer of Home BancShares Inc. (NASDAQ:HOMB), made a single sizable purchase on April 17, 2026. The filing reports a direct acquisition of 100,000 shares of common stock at $26.9621 per share, representing a total transaction value of $2,696,210. Following that purchase, Mr. Allison's direct ownership of common stock was reported as 5,798,926 shares. The stock is trading at $27.25, modestly above his purchase price, and InvestingPro analysis included with the filing indicates the shares continue to trade below its Fair Value estimate.
David Schellhase - Okta, Inc. (OKTA)
David Schellhase, a director at Okta, Inc. (NASDAQ:OKTA), increased his stake through purchases executed on April 16, 2026. Under a Rule 10b5-1 trading plan adopted on January 15, 2026, Mr. Schellhase purchased a total of 3,712 shares of Class A common stock in two transactions - 2,612 shares and 1,100 shares - at prices ranging from $71.8594 to $72.4648 per share, for an aggregate value of about $267,408. The stock has moved higher recently, posting a more than 10% gain over the past week and trading at $75.76 at the time of the filings.
Andrew Dakos - Total Return Securities Fund (SWZ)
Andrew Dakos, president and chief executive officer of Total Return Securities Fund (NASDAQ:SWZ), reported purchases of company common stock totaling $68,314 across transactions on April 16 and April 17, 2026. The purchase prices ranged between $6.04 and $6.09 per share. On April 16, Mr. Dakos purchased 4,718 shares at $6.06 each and an additional 3,000 shares at $6.05 per share, with an indirect holding through a limited partnership noted for some lots; he directly acquired 547 shares at $6.04 that same day. On April 17, he made an indirect purchase of 3,000 shares at $6.09 per share, again through a limited partnership. The stock is trading near its 52-week low of $5.84 with shares currently priced at $6.09.
Scott Arthur Beck - Gloo Holdings, Inc. (GLOO)
Scott Arthur Beck, president and chief executive officer of Gloo Holdings, Inc. (NASDAQ:GLOO), disclosed purchases of Class A common stock made on April 17 and April 20, 2026, totaling 6,500 shares for approximately $51,833. The April 17 purchases amounted to 3,700 shares at a weighted-average price of $7.97 per share, with executed trade prices ranging from $7.81 to $8.00. On April 20, he purchased an additional 2,800 shares at a weighted-average of $7.98 per share, with individual transaction prices between $7.95 and $8.00. These holdings are reported as being held indirectly through Pearl Street Trust, for which Mr. Beck and his spouse act as trustees. GLOO shares have advanced 28.6% over the past week and 40.6% year-to-date, trading at $8 with a market capitalization of $643.77 million. InvestingPro analysis cited in the filings suggests the stock is trading above its Fair Value.
Top sells
Jayshree Ullal - Arista Networks, Inc. (ANET)
Jayshree Ullal, chief executive officer and chairperson of Arista Networks, Inc. (NYSE:ANET), disposed of common shares totaling approximately $55.76 million on April 16, 2026. The filing shows the sale of 350,000 shares executed through various trusts at prices ranging from $159.00 to $160.96 per share - including lots sold between $159.00 and $159.99 and others between $160.03 and $160.96. These trades were reported as being carried out pursuant to Rule 10b5-1 trading plans that Ms. Ullal established on November 14, 2025. At the time of the filing, ANET shares were trading at $166.89 and were approaching a 52-week high of $167.90, having delivered a 134% return over the past year. InvestingPro analysis referenced in the filing indicates the shares appear overvalued relative to the service's Fair Value estimate.
James H. Litinsky - MP Materials Corp. (MP)
James H. Litinsky, chairman and chief executive officer of MP Materials Corp. (NASDAQ:MP), sold a substantial block of MP stock under a Rule 10b5-1 plan adopted on September 16, 2025. The Form 4 filing reports he sold 290,000 shares across two dates for a combined value of $19,209,816. On April 17, 2026, Mr. Litinsky sold 40,821 shares at a weighted average price of $64.05 per share, with individual trade prices from $64.00 to $64.28. On April 20, he sold 259,179 shares at a weighted average price of $64.03 per share, with transaction prices ranging from $64.00 to $64.24. The weighted average prices for the two sets of trades fell between $64.03 and $64.05 per share. MP stock has appreciated 186% over the past year and was trading at $66.23 at the time of the filing, which places it above the InvestingPro Fair Value estimate included in the filing materials.
David Hibbert Watson - ARGAN INC (AGX)
David Hibbert Watson, president and chief executive officer of ARGAN INC (NASDAQ:AGX), reported the sale of 19,310 shares on April 17, 2026. The securities were sold on the open market for a total of $11,626,744 at an average price of $602.11 per share. The filing notes that these sales followed several acquisitions of common stock by Mr. Watson through the vesting of restricted stock units between April 16 and April 17, 2026; those acquired shares were recorded at an effective acquisition price of $0 per share. AGX shares are trading near their 52-week high of $620 and have gained 313% over the past year, with InvestingPro analysis in the filings indicating the stock appears overvalued versus Fair Value.
Mat Ishbia and SFS Holding Corp - UWM Holdings Corp (UWMC)
Mat Ishbia, president and chief executive officer of UWM Holdings Corp (NYSE:UWMC), in transactions executed by SFS Holding Corp under a pre-arranged 10b5-1 trading plan, sold 3,001,722 shares of Class A common stock for roughly $11.64 million across three transactions in mid-April. The sales took place on April 16, 17, and 20, 2026, with the April 16 tranche comprising 1,000,574 shares sold at a weighted average price of $3.76 per share - individual sale prices in that lot ranged from $3.73 to $3.81 - for proceeds of approximately $3.76 million. UWMC shares were trading at $3.98 at the time of the filings, down 26% over the last six months and close to InvestingPro's Fair Value estimate of $4.11.
John M. Wall - Cadence Design Systems Inc. (CDNS)
John M. Wall, senior vice president and chief financial officer of Cadence Design Systems Inc. (NASDAQ:CDNS), sold 21,500 shares of common stock on April 16, 2026, at a price of $309.45 per share, generating gross proceeds of $6,653,175. The filing indicates the sale was executed pursuant to a Rule 10b5-1 trading plan that Mr. Wall adopted on May 6, 2025. Cadence shares have shown recent strength, trading at $318.50 and posting a 10.5% gain over the prior week; the company is reported to have a market capitalization of $87.8 billion and trades at a price-to-earnings ratio of 78.22 per the analysis included in the filings.
Interpretation and context included in filings
The filings presented a mix of open-market purchases, direct acquisitions, and sales executed under Rule 10b5-1 trading plans or through trusts. In several instances the filings included InvestingPro analysis indicating how the current market price compared with an estimated Fair Value for the shares in question. For a number of the names, the filings noted recent price moves or year-to-date performance metrics - for example, IMDX's 33% weekly gain against a 46.8% year-to-date decline, or AGX's 313% return over the past year. Several of the insiders who sold shares did so under pre-established 10b5-1 programs, which the filings described as plans that allow insiders to follow predetermined schedules for trades to reduce the appearance of trading on nonpublic information.
What the disclosures collectively show
The disclosure set for April 16-20 spans both ends of the insider trading spectrum: company executives and directors added to positions at some smaller-cap or recently pressured names, while high-dollar dispositions came from executives at larger-cap companies and from insiders with existing substantial holdings. Prices at which insiders traded often sat close to current market quotes, and the filings provided InvestingPro metrics such as Fair Value, market capitalization, leverage description, and price performance highlights to contextualize each insider action.
Summary observation
Monitoring these filings offers transparency into how those closest to each company transact in the market. The April filings reveal both confidence through purchase activity and routine or planned liquidity through sales under 10b5-1 plans and trust arrangements. Readers and investors should treat these moves as one data point among many and consider them alongside other fundamental and technical indicators when evaluating investment decisions.
Key points
- Notable insider sales included a $19.21 million disposition by MP Materials' CEO and a $55.76 million trust-based sale by Arista's CEO; both sales were executed under Rule 10b5-1 plans in at least some instances.
- Significant purchases were recorded at smaller-cap names, led by Broadwood Partners increasing its stake in Insight Molecular Diagnostics with $652,875 of open-market buys over a four-day window.
- The filings include InvestingPro Fair Value commentary across multiple names, and several of the stocks traded either above or below those Fair Value estimates at the time of the filings.
Risks and uncertainties explicitly supported by the filings
- Valuation divergence - Several filings flagged stocks as trading above InvestingPro Fair Value estimates (for example, MP, GLOO, ANET, AGX), indicating a risk that market prices exceed the referenced fair valuations.
- Concentration and timing - Large sales by insiders under pre-arranged plans or through trusts can reflect routine liquidity or diversification rather than company-specific negative signals; the filings note these trades were made under 10b5-1 plans or via trusts, creating uncertainty about the motivations.
- Price volatility - Several equities mentioned in the filings were trading near multi-week highs or lows (for example, UWMC near its Fair Value and near a six-month decline; SWZ near its 52-week low), which underscores the market uncertainty and potential for short-term price swings reflected in the insider transactions.
Conclusion
The SEC disclosures for mid-April to April 20, 2026, capture a patchwork of insider behavior across financials, technology, materials, and smaller-cap specialty names. The transactions encompass both confidence signals - purchases by major shareholders and executives - and sizable liquidity events from larger shareholders and company leaders, with several trades executed under formal 10b5-1 plans. Each filing provides concrete trade details and contextual InvestingPro metrics that market participants can incorporate into broader analyses, but none of the filings by themselves establish causal links between insider activity and future share performance.