Director at Sera Prognostics (SERA) sells 1,560 planned shares
Rhea-AI Filing Summary
Sera Prognostics director Sandra AJ Lawrence sold 1,560 shares of Class A common stock in an open-market transaction. The sale on June 8, 2026 was executed at a weighted average price of $2.15 per share, with individual trades ranging from $2.10 to $2.23. After the sale, Lawrence directly holds 16,473 shares. The transaction was carried out under a pre-arranged Rule 10b5-1 trading plan adopted on June 10, 2025.
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Insights
Routine 10b5-1 sale of a small portion of holdings.
Director Sandra AJ Lawrence sold 1,560 Sera Prognostics shares in an open-market transaction at a weighted average of $2.15 per share. This represents only a fraction of her stake, as she continues to hold 16,473 shares directly after the sale.
The filing notes the sale was effected under a Rule 10b5-1 trading plan adopted on June 10, 2025, indicating it was pre-scheduled rather than opportunistic. Such planned transactions are typically viewed as routine portfolio management rather than a strong signal about the company’s outlook.
Insider Trade Summary 10b5-1
Net Seller: 1,560 shares
Net Sell
1 txn
Insider
Lawrence Sandra AJ
Role
Director
Sold
1,560 shs ($3K)
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Sale | Class A Common Stock | 1,560 | $2.15 | $3K |
Holdings After Transaction:
Class A Common Stock — 16,473 shares (Direct)
Footnotes (2)
- F1. The transaction(s) reported on this Form 4 was/were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 10, 2025.
- F2. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.10 to $2.23, inclusive. The Reporting Person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price.
Key Figures
Shares sold: 1,560 shares
Weighted average sale price: $2.15 per share
Post-transaction holdings: 16,473 shares
+2 more
5 metrics
Shares sold
1,560 shares
Open-market sale on June 8, 2026
Weighted average sale price
$2.15 per share
Class A Common Stock sale
Post-transaction holdings
16,473 shares
Director’s direct ownership after sale
Sale price range
$2.10–$2.23 per share
Range of prices for individual trades
Trading plan adoption date
June 10, 2025
Rule 10b5-1 trading plan used for sale
Key Terms
Rule 10b5-1 trading plan, weighted average price, open-market sale, Class A Common Stock
4 terms
Rule 10b5-1 trading plan regulatory
"The transaction(s) reported on this Form 4 was/were effected pursuant to a Rule 10b5-1 trading plan adopted..."
A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.
weighted average price financial
"The price reported is a weighted average price. These shares were sold in multiple transactions..."
Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.
open-market sale financial
"transaction_action": "open-market sale""
An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.
Class A Common Stock financial
"security_title": "Class A Common Stock""
Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
What insider transaction did Sera Prognostics (SERA) report?
Sera Prognostics reported that director Sandra AJ Lawrence sold 1,560 shares of Class A common stock. The open-market transaction occurred on June 8, 2026 at a weighted average price of $2.15 per share, under a pre-arranged Rule 10b5-1 trading plan.
Was the SERA insider sale made under a Rule 10b5-1 trading plan?
Yes. The filing states the transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 10, 2025. Such plans pre-schedule trades, making the timing less indicative of the insider’s current views on the stock.
What does a weighted average sale price mean for the SERA Form 4?
The weighted average price of $2.15 reflects multiple trades executed between $2.10 and $2.23 per share. Instead of listing each trade separately, the filing reports this single average, and the insider offers to provide full trade-by-trade price details to regulators or shareholders upon request.