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

Tectonic Therapeutic, Inc.

TECX · Nasdaq · CIK 0001681087 · Healthcare · Biotechnology

INSIDER SIGNAL

No active buy signal

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

14 Form 4 transaction lines observed in the same window
5 sales · 9 option, withholding, award, gift or other lines

Last qualifying purchase2026-02-11 · REICIN ALISE · $52.8K

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
McNamara PeterChief Scientific Officer
○▼○▼○▼○▼
Ruddy Marcella K.Chief Medical Officer
▼○
REICIN ALISEChief Executive Officer
○○
Schwabish MarcChief Business Officer
○
Lochner DanielChief Financial 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: 2026-02-11 · REICIN ALISE.

Recent Form 4 activity

3Purchases
11Sales
24Other Form 4 lines
29SEC filings · 365 days
BUYING0 qualifying P line(s) · 180 days
SELLING5 sale line(s) · context only
OTHER9 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
2,222,184
Previous report
2,218,549
Avg daily volume
275,508
Days to cover
8.1

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
2026-02-11REICIN ALISEPurchase (P)Common Stock2,500USD 21.10USD 52,750SEC filing ↗
2026-02-11REICIN ALISEPurchase (P)Common Stock2,500USD 21.10USD 52,750SEC filing ↗
2026-02-10Lochner DanielPurchase (P)Common Stock6,000USD 21.61USD 129,660SEC filing ↗
2025-04-11SPRINGER TIMOTHY APurchase (P)Common Stock63,184USD 16.31USD 1,030,531SEC filing ↗
2025-04-10SPRINGER TIMOTHY APurchase (P)Common Stock53,950USD 16.73USD 902,584SEC filing ↗
2025-04-09SPRINGER TIMOTHY APurchase (P)Common Stock24,789USD 14.76USD 365,900SEC filing ↗
2025-04-07SPRINGER TIMOTHY APurchase (P)Common Stock500,000USD 17.10USD 8,550,000SEC filing ↗
2025-02-05SPRINGER TIMOTHY APurchase (P)Common Stock789,294USD 50.68USD 39,999,977SEC filing ↗
2025-02-05Lochner DanielPurchase (P)Common Stock4,617USD 54.14USD 249,964SEC filing ↗
2024-10-22SPRINGER TIMOTHY APurchase (P)Common Stock300,000USD 33.59USD 10,077,000SEC filing ↗
2024-09-26SPRINGER TIMOTHY APurchase (P)Common Stock50,000USD 28.82USD 1,440,829SEC filing ↗
2024-05-14Leonard Braden MichaelPurchase (P)Common Stock296,882USD 1.30USD 385,947SEC filing ↗
2024-05-13Leonard Braden MichaelPurchase (P)Common Stock469,753USD 1.25USD 586,815SEC filing ↗
2021-07-07Vickers Philip J.Purchase (P)Common Stock4,800USD 8.35USD 40,080SEC filing ↗
2021-02-17Donenberg Phillip B.Purchase (P)Common Stock2,000USD 11.71USD 23,420SEC filing ↗

Form 4 evidence

38 transaction lines in the latest 365-day window; 115 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-30McNamara PeterSale (S)Common Stock536USD 23.04USD 12,349SEC filing ↗
2026-09-25Schwabish MarcTax withholding (F)Common Stock411USD 23.67USD 9,728SEC filing ↗
2026-09-25Ruddy Marcella K.Tax withholding (F)Common Stock525USD 23.67USD 12,427SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-09-30McNamara PeterSale (S)Common Stock536USD 23.04USD 12,349SEC filing ↗
2026-09-25Schwabish MarcTax withholding (F)Common Stock411USD 23.67USD 9,728SEC filing ↗
2026-09-25Ruddy Marcella K.Tax withholding (F)Common Stock525USD 23.67USD 12,427SEC filing ↗
2026-09-25REICIN ALISETax withholding (F)Common Stock1,545USD 23.67USD 36,570SEC filing ↗
2026-09-25McNamara PeterTax withholding (F)Common Stock444USD 23.67USD 10,509SEC filing ↗
2026-09-25Lochner DanielTax withholding (F)Common Stock520USD 23.67USD 12,308SEC filing ↗
2026-08-25McNamara PeterSale (S)Common Stock43USD 36.52USD 1,570SEC filing ↗
2026-08-25McNamara PeterOption exercise / conversion (M)Common Stock43USD 14.71USD 633SEC filing ↗
2026-08-12McNamara PeterSale (S)Common Stock43USD 35.00USD 1,505SEC filing ↗
2026-08-12McNamara PeterOption exercise / conversion (M)Common Stock43USD 14.71USD 633SEC filing ↗
2026-06-30McNamara PeterSale (S)Common Stock172USD 35.00USD 6,020SEC filing ↗
2026-06-30McNamara PeterOption exercise / conversion (M)Common Stock172USD 14.71USD 2,530SEC filing ↗
2026-06-20REICIN ALISETax withholding (F)Common Stock924USD 30.34USD 28,034SEC filing ↗
2026-05-04Ruddy Marcella K.Sale (S)Common Stock1,065USD 30.00USD 31,950SEC filing ↗
2026-04-01Ruddy Marcella K.Sale (S)Common Stock1,000USD 31.05USD 31,050SEC filing ↗
2026-03-06Ruddy Marcella K.Sale (S)Common Stock10,000USD 30.00USD 300,000SEC filing ↗
2026-03-06McNamara PeterSale (S)Common Stock6,262USD 30.17USD 188,935SEC filing ↗
2026-03-06McNamara PeterOption exercise / conversion (M)Common Stock2,715USD 3.36USD 9,113SEC filing ↗
2026-03-04Schwabish MarcAward / grant (A)Common Stock19,500USD 0.00USD 0SEC filing ↗
2026-03-04Ruddy Marcella K.Award / grant (A)Common Stock26,500USD 0.00USD 0SEC filing ↗
2026-03-04REICIN ALISEAward / grant (A)Common Stock76,500USD 0.00USD 0SEC filing ↗
2026-03-04McNamara PeterSale (S)Common Stock1,650USD 25.00USD 41,250SEC filing ↗
2026-03-04McNamara PeterAward / grant (A)Common Stock23,000USD 0.00USD 0SEC filing ↗
2026-03-04Lochner DanielAward / grant (A)Common Stock26,500USD 0.00USD 0SEC filing ↗
2026-03-03McNamara PeterSale (S)Common Stock1,649USD 22.06USD 36,377SEC filing ↗
2026-02-11REICIN ALISEPurchase (P)Common Stock2,500USD 21.10USD 52,750SEC filing ↗
2026-02-11REICIN ALISEPurchase (P)Common Stock2,500USD 21.10USD 52,750SEC filing ↗
2026-02-10Schwabish MarcOption exercise / conversion (M)Common Stock4,500USD 2.38USD 10,710SEC filing ↗
2026-02-10Lochner DanielPurchase (P)Common Stock6,000USD 21.61USD 129,660SEC filing ↗
2026-02-04Schwabish MarcTax withholding (F)Common Stock1,619USD 23.22USD 37,593SEC 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 · —
TickerTECX
CIK0001681087
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2836 Biological Products, (No Diagnostic Substances)
ExchangeNasdaq

Data coverage

Local Form 4 history115 transaction lines from 2020-01-28 to 2026-09-30
26 P purchase lines · 17 S sale lines · 72 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.