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

BioAtla, Inc.

BCAB · OTC · CIK 0001826892 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

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

6 Form 4 transaction lines observed in the same window
0 sales · 6 option, withholding, award, gift or other lines

Last qualifying purchase2023-12-26 · MCBRINN SYLVIA · $9.3K

WHY NO ACTIVE SIGNAL?

Purchase activityNone
Recent buyingNone
Recent salesNone
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
SHORT JAY M PHDChief Executive Officer
○○
Vasquez ChristianChief Financial Officer
○○
Sievers EricChief Medical Officer
○○
● Purchase▼ Sale○ Other

—

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: 2023-12-26 · MCBRINN SYLVIA.

Recent Form 4 activity

0Purchases
0Sales
17Other Form 4 lines
17SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER6 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 provides additional background on recent price performance and risk. It does not affect the Insider Signal.

Price performance

1M
-45.8%
3M
-67.1%
6M
-73.5%
12M
-96.8%

Volatility & liquidity

Volatility
139.1%
Beta
—
Avg daily value
USD 75,829

Valuation

Market cap
—
P/E
—

Fundamentals

Profit margin
—
ROE
—
Industry
Biotechnology

Market data

Price data up to: 2026-10-15 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · Status: PASS

Short interest

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

Shares short
75,558
Previous report
94,060
Avg daily volume
54,698
Days to cover
1.4

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
2023-12-26MCBRINN SYLVIAPurchase (P)Common Stock4,000USD 2.33USD 9,320SEC filing ↗
2023-12-20SHORT JAY M PHDPurchase (P)Common Stock50,000USD 2.14USD 107,000SEC filing ↗
2023-12-19Vasquez ChristianPurchase (P)Common Stock7,495USD 2.04USD 15,290SEC filing ↗
2023-12-19STEINMAN LAWRENCEPurchase (P)Common Stock20,000USD 2.05USD 41,000SEC filing ↗
2023-09-08MCBRINN SYLVIAPurchase (P)Common Stock2,000USD 2.54USD 5,080SEC filing ↗
2023-03-29SHORT JAY M PHDPurchase (P)Common Stock40,800USD 2.47USD 100,776SEC filing ↗
2023-03-28MCBRINN SYLVIAPurchase (P)Common Stock4,000USD 2.35USD 9,400SEC filing ↗
2023-03-28Vasquez ChristianPurchase (P)Common Stock20,000USD 2.40USD 48,000SEC filing ↗
2022-12-19MCBRINN SYLVIAPurchase (P)Common Stock3,700USD 8.33USD 30,821SEC filing ↗
2022-11-22MCBRINN SYLVIAPurchase (P)Common Stock2,000USD 8.27USD 16,540SEC filing ↗
2022-09-13MCBRINN SYLVIAPurchase (P)Common Stock1,000USD 8.20USD 8,200SEC filing ↗
2022-09-12MCBRINN SYLVIAPurchase (P)Common Stock2,000USD 8.85USD 17,700SEC filing ↗
2022-08-12SHORT JAY M PHDPurchase (P)Common Stock26,350USD 7.84USD 206,584SEC filing ↗
2022-06-22SHORT JAY M PHDPurchase (P)Common Stock40,308USD 2.91USD 117,296SEC filing ↗
2022-06-21SHORT JAY M PHDPurchase (P)Common Stock29,082USD 2.79USD 81,139SEC filing ↗

Form 4 evidence

17 transaction lines in the latest 365-day window; 333 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-31Vasquez ChristianTax withholding (F)Common Stock71USD 1.69USD 120SEC filing ↗
2026-08-31Sievers EricTax withholding (F)Common Stock134USD 1.69USD 226SEC filing ↗
2026-08-31SHORT JAY M PHDTax withholding (F)Common Stock259USD 1.69USD 438SEC filing ↗
Show recent Form 4 evidence (17 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-08-31Vasquez ChristianTax withholding (F)Common Stock71USD 1.69USD 120SEC filing ↗
2026-08-31Sievers EricTax withholding (F)Common Stock134USD 1.69USD 226SEC filing ↗
2026-08-31SHORT JAY M PHDTax withholding (F)Common Stock259USD 1.69USD 438SEC filing ↗
2026-05-31Vasquez ChristianTax withholding (F)Common Stock82USD 3.93USD 322SEC filing ↗
2026-05-31Sievers EricTax withholding (F)Common Stock134USD 3.93USD 527SEC filing ↗
2026-05-31SHORT JAY M PHDTax withholding (F)Common Stock259USD 3.93USD 1,018SEC filing ↗
2026-03-11SHORT JAY M PHDAward / grant (A)Common Stock430,000USD 0.00USD 0SEC filing ↗
2026-03-10Vasquez ChristianAward / grant (A)Common Stock240,000USD 0.00USD 0SEC filing ↗
2026-03-10Sievers EricAward / grant (A)Common Stock240,000USD 0.00USD 0SEC filing ↗
2026-02-28WALDRON RICHARD ATax withholding (F)Common Stock2,729USD 0.25USD 682SEC filing ↗
2026-02-28Vasquez ChristianTax withholding (F)Common Stock1,802USD 0.25USD 450SEC filing ↗
2026-02-28Sievers EricTax withholding (F)Common Stock3,140USD 0.25USD 785SEC filing ↗
2026-02-28SHORT JAY M PHDTax withholding (F)Common Stock7,728USD 0.25USD 1,932SEC filing ↗
2025-11-30WALDRON RICHARD ATax withholding (F)Common Stock2,371USD 0.90USD 2,134SEC filing ↗
2025-11-30Vasquez ChristianTax withholding (F)Common Stock1,566USD 0.90USD 1,409SEC filing ↗
2025-11-30Sievers EricTax withholding (F)Common Stock2,729USD 0.90USD 2,456SEC filing ↗
2025-11-30SHORT JAY M PHDTax withholding (F)Common Stock6,347USD 0.90USD 5,712SEC 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 · —
TickerBCAB
CIK0001826892
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2836 Biological Products, (No Diagnostic Substances)
ExchangeOTC

Data coverage

Local Form 4 history333 transaction lines from 2020-12-18 to 2026-08-31
21 P purchase lines · 104 S sale lines · 208 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.