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

Serina Therapeutics, Inc.

SER · NYSE · CIK 0001708599 · Healthcare · Biotechnology

INSIDER SIGNAL

66.6 / 100

4 buyers · 7 purchase transaction lines · $78.0K gross purchase

WHY THIS SIGNAL?

Buyer breadthStrong
Purchase sizeLow
RoleStrong
RecencyLow
ConvictionStrong
Score anatomy

Each bar shows the contribution to the current score; the weights and formula stay unchanged.

Cluster+28.0 / 35
Purchase size+6.8 / 25
Role+20.0 / 20
Recency+1.8 / 10
Conviction+10.0 / 10

What is holding the score back?

  • ⚠ Purchase size is modest relative to the model scale
  • ⚠ Purchase activity is becoming less recent
  • ✓ Cluster breadth is broad · 4+ insiders
  • ✓ Role scores high · most senior buyer: Director

Purchase-size comments are relative to the model scale. Average daily volume is a separate market-context diagnostic.

US-v1.2 ranks qualifying equity purchases under the current 180-day rules. The score is a research priority, not a return forecast or probability. Backtests have not shown that a higher US score is followed by better returns.

Insider activity timeline

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

AprMayJunJulAugSepOct
WILSON KAREN JDirector
●●●●
Venkatesan JayDirector
●○
Bailey GregoryDirector
○
LEDGER STEVEN AChief Executive Officer
○
Marshall Richard PeterDirector
●
Brannan Stephen K.Director
●
● Purchase▼ Sale○ Other

—

Purchase breadth & concentration

QUALIFYING BUYERS4
PURCHASE CONCENTRATION70%Largest buyer: WILSON KAREN J · $54.8K
CLUSTER BUYING · 15D3 insidersPeak activity: 2026-05-19–2026-05-22

Roles in the peak window: Director. Concentration uses priced qualifying P lines only and does not change the saved score.

SIGNAL HISTORY

66.6 / 100

Latest recorded score

↓ -0.1 ptsversus the previous recorded snapshot
  1. 66.8
  2. 66.7
  3. 66.7
  4. 66.7
  5. 66.6

Only scores saved when a full US scoring run completed are shown; gaps are not reconstructed.

Recent Form 4 activity

7Purchases
28Sales
32Other Form 4 lines
31SEC filings · 365 days
BUYING7 qualifying P line(s) · 180 days
SELLING0 sale line(s) · context only
OTHER4 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
-20.0%
3M
-2.4%
6M
+1.0%
12M
-64.5%

Volatility & liquidity

Volatility
114.1%
Beta
—
Avg daily value
USD 127,933

Valuation

Market cap
USD 50.8M
P/E
—

Fundamentals

Profit margin
—
ROE
—
Industry
Biotechnology

Market data

Price data up to: 2026-10-11 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-08-10 · Status: PASS

Short interest

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

Shares short
56,600
Previous report
119,360
Avg daily volume
121,092
Days to cover
≤ 1.0

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
2026-07-07Brannan Stephen K.Purchase (P)Common Stock1,000USD 2.03USD 2,030SEC filing ↗
2026-06-12WILSON KAREN JPurchase (P)Common Stock5,000USD 1.77USD 8,850SEC filing ↗
2026-06-11WILSON KAREN JPurchase (P)Common Stock5,100USD 1.75USD 8,925SEC filing ↗
2026-05-22Venkatesan JayPurchase (P)Common Stock589USD 1.78USD 1,048SEC filing ↗
2026-05-22WILSON KAREN JPurchase (P)Common Stock10,000USD 1.93USD 19,300SEC filing ↗
2026-05-21WILSON KAREN JPurchase (P)Common Stock10,000USD 1.77USD 17,700SEC filing ↗
2026-05-19Marshall Richard PeterPurchase (P)Common Stock12,183USD 1.65USD 20,102SEC filing ↗
2024-12-17Bailey GregoryPurchase (P)Common Stock3,866USD 4.59USD 17,745SEC filing ↗
2024-09-20Bailey GregoryPurchase (P)Common Stock1,137USD 6.03USD 6,856SEC filing ↗
2024-09-19Bailey GregoryPurchase (P)Common Stock11,679USD 6.11USD 71,359SEC filing ↗
2024-09-18Bailey GregoryPurchase (P)Common Stock2,709USD 6.23USD 16,877SEC filing ↗
2024-09-12MINTZ STEVENPurchase (P)Common Stock6,000USD 6.47USD 38,820SEC filing ↗
2024-08-20Bailey GregoryPurchase (P)Common Stock1,776USD 8.25USD 14,652SEC filing ↗
2024-08-19Bailey GregoryPurchase (P)Common Stock6,400USD 7.93USD 50,752SEC filing ↗
2024-08-16Bailey GregoryPurchase (P)Common Stock6,400USD 7.31USD 46,784SEC filing ↗

Form 4 evidence

67 transaction lines in the latest 365-day window; 154 in local history.

DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-07-07Brannan Stephen K.Purchase (P)Common Stock1,000USD 2.03USD 2,030SEC filing ↗
2026-06-17Venkatesan JayC (C)Common Stock224,152USD 2.25USD 504,342SEC filing ↗
2026-06-17Bailey GregoryC (C)Common Stock8,437,472USD 2.25USD 18,984,312SEC filing ↗
Show recent Form 4 evidence (30 grouped rows)
DateOwnerTypeSecuritySharesAvg. priceApprox. valueSource
2026-07-07Brannan Stephen K.Purchase (P)Common Stock1,000USD 2.03USD 2,030SEC filing ↗
2026-06-17Venkatesan JayC (C)Common Stock224,152USD 2.25USD 504,342SEC filing ↗
2026-06-17Bailey GregoryC (C)Common Stock8,437,472USD 2.25USD 18,984,312SEC filing ↗
2026-06-12WILSON KAREN JPurchase (P)Common Stock5,000USD 1.77USD 8,850SEC filing ↗
2026-06-11WILSON KAREN JPurchase (P)Common Stock5,100USD 1.75USD 8,925SEC filing ↗
2026-05-26LEDGER STEVEN AAward / grant (A)Common Stock10,100USD 1.93USD 19,493SEC filing ↗
2026-05-22Venkatesan JayPurchase (P)Common Stock589USD 1.78USD 1,048SEC filing ↗
2026-05-22WILSON KAREN JPurchase (P)Common Stock10,000USD 1.93USD 19,300SEC filing ↗
2026-05-21WILSON KAREN JPurchase (P)Common Stock10,000USD 1.77USD 17,700SEC filing ↗
2026-05-19Marshall Richard PeterPurchase (P)Common Stock12,183USD 1.65USD 20,102SEC filing ↗
2026-03-23Moreadith RandallSale (S)Common Stock6,500USD 2.86USD 18,590SEC filing ↗
2026-03-23Moreadith RandallOption exercise / conversion (M)Common Stock6,500USD 0.06USD 390SEC filing ↗
2026-03-19Moreadith RandallSale (S)Common Stock39,000USD 2.50USD 97,500SEC filing ↗
2026-03-19Moreadith RandallOption exercise / conversion (M)Common Stock39,000USD 0.06USD 2,340SEC filing ↗
2026-02-02Moreadith RandallSale (S)Common Stock6,500USD 3.03USD 19,695SEC filing ↗
2026-02-02Moreadith RandallOption exercise / conversion (M)Common Stock6,500USD 0.06USD 390SEC filing ↗
2026-01-28Moreadith RandallSale (S)Common Stock6,500USD 3.57USD 23,205SEC filing ↗
2026-01-28Moreadith RandallOption exercise / conversion (M)Common Stock6,500USD 0.06USD 390SEC filing ↗
2026-01-22Moreadith RandallSale (S)Common Stock2,500USD 2.95USD 7,375SEC filing ↗
2026-01-22Moreadith RandallOption exercise / conversion (M)Common Stock2,500USD 0.06USD 150SEC filing ↗
2026-01-21Moreadith RandallSale (S)Common Stock2,000USD 3.00USD 6,000SEC filing ↗
2026-01-21Moreadith RandallOption exercise / conversion (M)Common Stock2,000USD 0.06USD 120SEC filing ↗
2026-01-20Moreadith RandallSale (S)Common Stock2,000USD 3.07USD 6,140SEC filing ↗
2026-01-20Moreadith RandallOption exercise / conversion (M)Common Stock2,000USD 0.06USD 120SEC filing ↗
2026-01-14Moreadith RandallSale (S)Common Stock1,084USD 2.50USD 2,710SEC filing ↗
2026-01-14Moreadith RandallOption exercise / conversion (M)Common Stock1,084USD 0.06USD 65SEC filing ↗
2026-01-13Moreadith RandallSale (S)Common Stock5,416USD 2.50USD 13,540SEC filing ↗
2026-01-13Moreadith RandallOption exercise / conversion (M)Common Stock5,416USD 0.06USD 325SEC filing ↗
2026-01-08Moreadith RandallSale (S)Common Stock13,000USD 2.69USD 34,970SEC filing ↗
2026-01-08Moreadith RandallOption exercise / conversion (M)Common Stock13,000USD 0.06USD 780SEC 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 · —
TickerSER
CIK0001708599
SectorHealthcare
IndustryBiotechnology Yahoo Finance
SEC SIC2834 Pharmaceutical Preparations
ExchangeNYSE

Data coverage

Local Form 4 history154 transaction lines from 2020-03-11 to 2026-07-07
37 P purchase lines · 41 S sale lines · 76 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.