STOCK TITAN

SERA (NASDAQ: SERA) CMO executes 362-share tax sell-to-cover trade

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

SERA PROGNOSTICS, INC. Chief Medical Officer Tiffany Eul Davis reported a small sale of Class A Common Stock tied to tax withholding on vested equity. She sold 362 shares on June 11, 2026 at a weighted average price of $2.01 per share as part of a block trade.

According to the disclosure, this transaction was a mandated “sell to cover” to satisfy tax withholding obligations from restricted stock unit vesting and was not a discretionary sale. After this sale, she directly holds 92,075 shares of SERA common stock.

Positive

  • None.

Negative

  • None.
Insider Inglis Tiffany Eul Davis
Role Chief Medical Officer
Sold 362 shs ($727.62)
Type Security Shares Price Value
Sale Class A Common Stock 362 $2.01 $727.62
Holdings After Transaction: Class A Common Stock — 92,075 shares (Direct, null)
Footnotes (1)
  1. Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units ("RSUs"). The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by "sell to cover" transactions and does not represent a discretionary transaction by the Reporting Person. The price reported is a weighted average price. These shares were sold as part of a block trade in multiple transactions at prices ranging from $1.87 to $2.12, 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 with regard to the block trade.
Shares sold 362 shares Class A Common Stock sold on June 11, 2026
Weighted average sale price $2.01/share Block trade to cover tax withholding
Post-transaction holdings 92,075 shares Directly held by Tiffany Eul Davis after sale
Price range in block trade $1.87–$2.12/share Multiple transactions within the sell-to-cover block
sell to cover financial
"The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by "sell to cover" transactions"
Sell to cover is when a person who receives company stock through options or awards sells just enough shares immediately to pay required taxes, exercise costs, or fees, keeping the rest. Think of it like cashing part of a bonus to cover the tax bill so you can keep the remainder. For investors, it can create predictable small selling pressure and slightly change the number of shares actually held by insiders without increasing long‑term dilution.
restricted stock units ("RSUs") financial
"in connection with the vesting of restricted stock units ("RSUs")"
Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.
weighted average price financial
"The price reported is a weighted average price"
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.
block trade financial
"These shares were sold as part of a block trade in multiple transactions"
A block trade is a large, privately arranged sale or purchase of a company's shares or bonds between big investors, often negotiated to avoid upsetting the public market price. Think of it like selling a truckload of goods directly to one buyer instead of unloading it on a busy street — it moves a lot of supply at once and can signal shifting demand, affect immediate liquidity, and influence short-term stock prices.
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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Inglis Tiffany Eul Davis

(Last)(First)(Middle)
C/O SERA PROGNOSTICS, INC.
2749 EAST PARLEYS WAY, SUITE 200

(Street)
SALT LAKE CITY UTAH 84109

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
SERA PROGNOSTICS, INC. [ SERA ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Medical Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/11/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Class A Common Stock06/11/2026S362(1)D$2.01(2)92,075D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Represents the number of shares sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units ("RSUs"). The sale is mandated by the Issuer's election to require the satisfaction of tax withholding obligations to be funded by "sell to cover" transactions and does not represent a discretionary transaction by the Reporting Person.
2. The price reported is a weighted average price. These shares were sold as part of a block trade in multiple transactions at prices ranging from $1.87 to $2.12, 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 with regard to the block trade.
/s/ Benjamin G. Jackson, Attorney-in-fact06/15/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did SERA (SERA) report for Tiffany Eul Davis?

SERA reported that Chief Medical Officer Tiffany Eul Davis sold 362 shares of Class A Common Stock. The transaction occurred on June 11, 2026, and was tied to tax withholding from restricted stock unit vesting rather than a discretionary open-market sale.

How many SERA (SERA) shares did the CMO sell and at what price?

Tiffany Eul Davis sold 362 shares of SERA Class A Common Stock at a weighted average price of $2.01 per share. The filing notes prices ranged from $1.87 to $2.12 within the block trade executing this sell-to-cover transaction.

Why did SERA’s CMO sell shares in this Form 4 filing for SERA (SERA)?

The shares were sold to cover tax withholding obligations from vesting restricted stock units. SERA elected to satisfy these taxes through mandated “sell to cover” trades, meaning the sale was not a discretionary investment decision by the executive.

How many SERA (SERA) shares does Tiffany Eul Davis hold after the transaction?

After the June 11, 2026 sell-to-cover transaction, Tiffany Eul Davis directly holds 92,075 shares of SERA Class A Common Stock. This remaining position shows the reported sale was small relative to her overall direct equity holdings.

Was the SERA (SERA) insider sale part of a block trade and what was the range?

Yes. The Form 4 states the 362 shares were sold in a block trade at prices ranging from $1.87 to $2.12 per share. The reported $2.01 figure is a weighted average for the multiple transactions comprising that block.