Insider Trading March 12, 2026

Sera Prognostics general counsel executes small stock sale to meet tax obligations

Benjamin Jackson disposed of 1,027 shares as company posts clinical trial milestones and receives analyst backing

By Caleb Monroe SERA
Sera Prognostics general counsel executes small stock sale to meet tax obligations
SERA

Benjamin Jackson, general counsel of Sera Prognostics, sold 1,027 shares of the company's Class A common stock on March 11, 2026, in a transaction that generated roughly $2,095. The sale, disclosed on a Form 4 filing, was described as a means to satisfy tax withholding tied to the vesting of restricted stock units. The move comes amid positive clinical trial results for the company's PreTRM test and new analyst coverage from Jefferies.

Key Points

  • Sera Prognostics General Counsel Benjamin Jackson sold 1,027 Class A shares on March 11, 2026, at a weighted average price of $2.04 for total proceeds of $2,095.
  • The sale was executed to meet tax withholding obligations stemming from the vesting of restricted stock units; Jackson retains 114,720 shares after the transaction.
  • Sera published clinical trial results for its PreTRM test showing a 56% reduction in births before 32 weeks and a 32% reduction before 35 weeks in a 5,018-woman study; Jefferies initiated coverage with a Buy rating and a $5.00 target.

Transaction details

According to a Form 4 filing with the Securities and Exchange Commission, Sera Prognostics (NASDAQ:SERA) General Counsel Benjamin Jackson sold 1,027 shares of Class A common stock on March 11, 2026. The shares were sold at a weighted average price of $2.04, producing total proceeds of $2,095. Reported trade prices in the transaction ranged from $1.90 to $2.30.

Post-sale holdings and rationale

Following the disposition, Jackson directly holds 114,720 shares of Sera Prognostics. The filing states the sale was conducted to cover tax withholding obligations associated with the vesting of restricted stock units.

Market context

Sera Prognostics shares are trading at $1.99, reflecting a decline of roughly 51% over the past 12 months. InvestingPro analysis cited in the filing indicates a Fair Value estimate of $2.56 for the stock. The filing also notes availability of a broader Pro Research Report that includes coverage of Sera Prognostics alongside more than 1,400 other U.S. equities.

Clinical results

Separately, the company reported results from a large clinical trial evaluating its PreTRM test. The study enrolled 5,018 women and found that using the blood test in conjunction with targeted interventions produced significant reductions in preterm birth risks and improved newborn outcomes. Specifically, the trial results showed a 56% reduction in births before 32 weeks and a 32% reduction in births before 35 weeks. Those findings were published in the peer-reviewed journal PREGNANCY.

Analyst coverage

Jefferies has initiated coverage of Sera Prognostics with a Buy rating and set a price target of $5.00. The analyst firm highlighted the potential of the company’s PreTRM product, which is intended to assess the risk of spontaneous preterm birth in asymptomatic pregnancies.

Takeaway

The insider sale disclosed on March 11 was characterized as a tax-driven transaction tied to RSU vesting. It coincides with clinical data publication and fresh analyst optimism for Sera Prognostics’ diagnostic offering.

Risks

  • Insider sale was tax-driven rather than a directional bet on the company - this limits the inference investors can draw about executive conviction; impacts equity holders and market signaling.
  • Sera’s share price has declined roughly 51% over the past year, indicating heightened market volatility and potential investor concern - relevant to equity and small-cap diagnostics investors.
  • Fair Value estimates differ from current market pricing - InvestingPro’s Fair Value of $2.56 contrasts with the stock trading at $1.99, introducing valuation uncertainty for investors in healthcare diagnostics equities.

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