Horizon Kinetics Asset Management LLC bought 756 shares of RENN Fund, Inc., which trades under the ticker RCG, in an open-market transaction on September 28, 2026. According to the SEC filing summarized in the supplied record, the price was $3.04 a share and the reported transaction value was approximately $2,298.

The Form 4 identifies Horizon Kinetics as a 10% owner of the company. The record indicates that the purchase was not made under a Rule 10b5-1 trading plan. The supplied publication timestamp is September 29, 2026; the transaction itself occurred the previous day.

What the disclosure records

Form 4 is the principal SEC form used to report changes in beneficial ownership by company insiders covered by Section 16 of the Securities Exchange Act of 1934. That reporting framework generally covers directors, certain officers and beneficial owners of more than 10% of a registered class of equity securities. An investment management company can therefore appear as a reporting owner without being an individual executive.

Most transactions subject to Form 4 reporting must be disclosed within two business days. The system gives the public access to ownership changes through the SEC’s filing database. An insider filing is a disclosure document; its appearance in that database does not constitute an SEC recommendation to buy or sell the security.

For this purchase, multiplying 756 shares by the stated $3.04 price produces $2,298.24, consistent with the rounded $2,298 amount in the supplied summary. That calculation describes the shares’ purchase value at the reported price. The input does not establish whether any brokerage fees or other costs applied.

The open-market designation describes how the shares were acquired. It distinguishes the reported purchase from transactions such as an equity award or a gift. It does not identify the seller, explain how the order was executed or reveal why Horizon Kinetics chose that date to trade.

What remains outside the record

Rule 10b5-1 provides a framework through which qualifying trading arrangements can offer an affirmative defense against insider-trading liability when their conditions are satisfied. Such arrangements generally establish trading instructions in advance, subject to regulatory requirements. The indication that this purchase was outside a 10b5-1 plan does not, by itself, establish anything improper about the trade.

The supplied information does not give Horizon Kinetics’ resulting share balance, its exact ownership percentage after the purchase or the size of its earlier position. Consequently, it cannot establish how much the transaction changed the firm’s exposure to RENN Fund. The 10% owner classification should not be read as an exact, updated ownership calculation.

Nor does the summary supply an investment thesis, a target price or a commitment to make additional purchases. Form 4 reporting concerns ownership transactions rather than a company’s operating results. This record therefore offers no new figures for RENN Fund’s earnings, assets or financial outlook.

What to watch

Subsequent ownership disclosures could show whether Horizon Kinetics makes further purchases or sales. The complete Form 4, including any ownership totals and footnotes, is the next document to consult for details absent from the supplied summary.