The Dow Jones index closed lower by over 550 points on Tuesday. When insiders purchase or sell shares, it indicates their confidence or concern around the company’s prospects. Investors and traders interested in penny stocks can consider this a factor in their overall investment or trading decision.

Below is a look at a few recent notable insider transactions for penny stocks. For more, check out Benzinga’s insider transactions platform.

Earth Science Tech

The Trade: Earth Science Tech, Inc. ( ETST ) CEO Giorgio R. Saumat bought a total of 478,331 shares at an average price of $0.08. To acquire these shares, it cost around $41,129. The company's Director Yovan Arturo Sanchez also bought 7,470 shares.

What's Happening: On Jan. 29, Earth Science Tech ( ETST ) announced a $5 million common stock repurchase program.

What Earth Science Tech Does: Earth Science Tech Inc ( ETST ) is a diversified holding company. Currently, the company is focused on emerging prospects in the health and wellness industry.

ADM Endeavors

The Trade: ADM Endeavors, Inc. ( ADMQ ) CEO Marc Johnson acquired a total of 15,000 shares at an average price of $0.05. To acquire these shares, it cost around $797.

What's Happening: The company's stock rose around 4% over the past month.

What ADM Endeavors Does: ADM Endeavors Inc ( ADMQ ) operates a diverse vertical integrated business, which consists of a retail sales division, focusing on screen print promotions, embroidery production, digital production, import wholesale sourcing, and uniforms.

ASP Isotopes

The Trade: ASP Isotopes Inc. ( ASPI ) Director Robert John Andrew Ryan acquired a total of 5,000 shares at an average price of $3.48. The insider spent around $17,400 to buy those shares.

What's Happening: On April 18, HC Wainwright & Co. analyst Heiko Ihle maintained ASP Isotopes ( ASPI ) with a Buy and raised the price target from $5.25 to $5.5.

What ASP Isotopes Does: ASP Isotopes Inc ( ASPI ) is a pre-commercial stage advanced materials company dedicated to the development of technology and processes that, if successful, will allow for the production of isotopes that may be used in several industries.

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