Stock Trading Canary

United States · SEC Form 4 · Snapshot date: 2026-10-18 · Built: 2026-10-18 · 中文

← United States · Coverage record

US · SEC FORM 4

SERA PROGNOSTICS, INC.

SERA · Nasdaq · CIK 0001534969 · Healthcare · Medical Devices

INSIDER SIGNAL

No active buy signal

0 qualifying P purchase groups
in the current 180-day scoring window

31 Form 4 transaction lines observed in the same window
14 sales · 17 option, withholding, award, gift or other lines

Last qualifying purchase2022-06-14 · Jackson Benjamin · $9.6K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesModerate
Buy signal statusInactive
Score anatomy

No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.

ClusterNot calculated
Purchase sizeNot calculated
RoleNot calculated
RecencyNot calculated
ConvictionNot calculated

Why is there no score?

  • No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
  • Sales and other Form 4 activity remain visible as context and do not create a negative score.

Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.

Insider activity timeline

Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.

AprMayJunJulAugSepOct
Lindgardt ZhenyaChief Executive Officer
▼▼▼▼
Inglis Tiffany Eul DavisChief Medical Officer
▼▼▼
Jackson BenjaminGeneral Counsel
○▼▼
Anderson Dyaarl Lee Jr.Chief Commercial Officer
○▼▼
Lawrence Sandra AJDirector
▼○
Aerts AustinChief Financial Officer
▼▼
● Purchase▼ Sale○ Other

Showing the six most active owners; 7 additional owner(s) remain in Form 4 evidence.

Purchase breadth, concentration & cluster buying

These modules activate when qualifying purchases enter the 180-day research window.

SIGNAL HISTORY

No recorded active-signal snapshot

Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2022-06-14 · Jackson Benjamin.

Recent Form 4 activity

0Purchases
52Sales
26Other Form 4 lines
66SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING14 sale line(s) · context only
OTHER17 exercise / withholding / award / gift / other lines
10b5-1 / PLANNEDNot assessed

P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.

Market context

Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.

Short interest

Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.

Shares short
229,723
Previous report
213,893
Avg daily volume
17,119
Days to cover
13.4

FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.

Historical equity purchases

Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.

Transaction dateReporting ownerTypeSecuritySharesAvg. priceApprox. valueSource
2022-06-14Jackson BenjaminPurchase (P)Class A Common Stock8,000USD 1.20USD 9,600SEC filing ↗

Form 4 evidence

78 transaction lines in the latest 365-day window; 337 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-12Inglis Tiffany Eul DavisSale (S)Class A Common Stock8,024USD 2.03USD 16,289SEC filing ↗
2026-09-10Lindgardt ZhenyaSale (S)Class A Common Stock7,022USD 2.00USD 14,044SEC filing ↗
2026-09-10Jackson BenjaminSale (S)Class A Common Stock2,190USD 2.00USD 4,380SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-10-12Inglis Tiffany Eul DavisSale (S)Class A Common Stock8,024USD 2.03USD 16,289SEC filing ↗
2026-09-10Lindgardt ZhenyaSale (S)Class A Common Stock7,022USD 2.00USD 14,044SEC filing ↗
2026-09-10Jackson BenjaminSale (S)Class A Common Stock2,190USD 2.00USD 4,380SEC filing ↗
2026-09-10Inglis Tiffany Eul DavisSale (S)Class A Common Stock486USD 2.00USD 972SEC filing ↗
2026-09-10Anderson Dyaarl Lee Jr.Sale (S)Class A Common Stock1,800USD 2.00USD 3,600SEC filing ↗
2026-09-08Lindgardt ZhenyaSale (S)Class A Common Stock20,139USD 2.00USD 40,278SEC filing ↗
2026-08-31Gleason ScottAward / grant (A)Class A Common Stock117,924USD 0.00USD 0SEC filing ↗
2026-07-10Phillips JoshuaAward / grant (A)Class A Common Stock24,686USD 0.00USD 0SEC filing ↗
2026-07-10Mirza Mansoor RazaAward / grant (A)Class A Common Stock24,197USD 0.00USD 0SEC filing ↗
2026-07-10Lawrence Sandra AJAward / grant (A)Class A Common Stock24,702USD 0.00USD 0SEC filing ↗
2026-07-10Kamdar Kim P.Award / grant (A)Class A Common Stock25,847USD 0.00USD 0SEC filing ↗
2026-07-10Capone Mark ChristopherAward / grant (A)Class A Common Stock44,379USD 0.00USD 0SEC filing ↗
2026-07-10CRITCHFIELD GREGORY CAward / grant (A)Class A Common Stock24,020USD 0.00USD 0SEC filing ↗
2026-07-10Barlow Jane FAward / grant (A)Class A Common Stock24,375USD 0.00USD 0SEC filing ↗
2026-06-11Lindgardt ZhenyaSale (S)Class A Common Stock6,990USD 2.01USD 14,050SEC filing ↗
2026-06-11Jackson BenjaminSale (S)Class A Common Stock2,179USD 2.01USD 4,380SEC filing ↗
2026-06-11Inglis Tiffany Eul DavisSale (S)Class A Common Stock362USD 2.01USD 728SEC filing ↗
2026-06-11Anderson Dyaarl Lee Jr.Sale (S)Class A Common Stock4,739USD 2.01USD 9,525SEC filing ↗
2026-06-11Aerts AustinSale (S)Class A Common Stock2,037USD 2.01USD 4,094SEC filing ↗
2026-06-09Lindgardt ZhenyaSale (S)Class A Common Stock20,755USD 2.08USD 43,170SEC filing ↗
2026-06-09Aerts AustinSale (S)Class A Common Stock5,440USD 2.08USD 11,315SEC filing ↗
2026-06-08Lawrence Sandra AJSale (S)Class A Common Stock1,560USD 2.15USD 3,354SEC filing ↗
2026-05-29Jackson BenjaminAward / grant (A)Class A Common Stock5,000USD 1.84USD 9,200SEC filing ↗
2026-05-29Anderson Dyaarl Lee Jr.Award / grant (A)Class A Common Stock3,168USD 1.84USD 5,829SEC filing ↗
2026-03-12Lindgardt ZhenyaAward / grant (A)Class A Common Stock154,440USD 0.00USD 0SEC filing ↗
2026-03-12Jackson BenjaminAward / grant (A)Class A Common Stock44,215USD 0.00USD 0SEC filing ↗
2026-03-12Inglis Tiffany Eul DavisAward / grant (A)Class A Common Stock17,437USD 0.00USD 0SEC filing ↗
2026-03-12Anderson Dyaarl Lee Jr.Award / grant (A)Class A Common Stock12,455USD 0.00USD 0SEC filing ↗
2026-03-12Aerts AustinAward / grant (A)Class A Common Stock44,215USD 0.00USD 0SEC filing ↗
2026-03-11Lindgardt ZhenyaSale (S)Class A Common Stock2,973USD 2.04USD 6,065SEC filing ↗

Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.

Snapshot & identity

Snapshot date2026-10-18
Ranking versionUS-v1.2
Data qualityPASS ELIGIBLE · —
TickerSERA
CIK0001534969
SectorHealthcare
IndustryMedical Devices Yahoo Finance
SEC SIC8071 Services-Medical Laboratories
ExchangeNasdaq

Data coverage

Local Form 4 history337 transaction lines from 2021-07-19 to 2026-10-12
1 P purchase lines · 215 S sale lines · 121 other lines
SEC company submissionsOpen SEC filings ↗

Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.