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

US · SEC FORM 4

Blue Bird Corp

BLBD · Nasdaq · CIK 0001589526 · Consumer Cyclical · Farm & Heavy Construction Machinery

INSIDER SIGNAL

No active buy signal

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

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

Last qualifying purchase2026-08-12 · Thau Daniel Mark · $22.5K

WHY NO ACTIVE SIGNAL?

Purchase activityPresent

Recent buying2 qualifying line group(s)

Recent salesLow

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

Thau Daniel MarkDirector

●●

Sanfrey Jeffrey ScottChief Operating Officer

▼

● Purchase▼ Sale○ Other

—

Purchase breadth & concentration

QUALIFYING BUYERS1

PURCHASE CONCENTRATION100%Largest buyer: Thau Daniel Mark · $42.1K

CLUSTER BUYING · 15D1 insiderPeak activity: 2026-05-19–2026-05-19

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

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: 2026-08-12 · Thau Daniel Mark.

Recent Form 4 activity

3Purchases

7Sales

29Other Form 4 lines

27SEC filings · 365 days

BUYING2 qualifying P line(s) · 180 days

SELLING1 sale line(s) · context only

OTHER0 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: -5.6%
3M: -29.6%
6M: -7.1%
12M: +0.4%

Volatility & liquidity

Volatility: 43.0%
Beta: —
Avg daily value: USD 32.3M

Valuation

Market cap: USD 1.8B
P/E: 14.2×

Fundamentals

Profit margin: 8.6%
ROE: 50.0%
Industry: Farm & Heavy Construction Machinery

Market data

Price data up to: 2026-10-18 · Price source: OpenBB/yfinance; volume from price cache (yfinance) · From SEC filings: Market cap, P/E, Profit margin, ROE · Fiscal year ended: 2025-09-27 · Market cap is the shares outstanding stated on the filing cover multiplied by the latest close. Share count date: 2026-07-31 · Status: PASS

Short interest

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

Shares short: 4,502,920
Previous report: 4,234,205
Avg daily volume: 565,063
Days to cover: 8.0

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 date	Reporting owner	Type	Security	Shares	Avg. price	Approx. value	Source
2026-08-12	Thau Daniel Mark	Purchase (P)	Common Stock, par value $0.0001 per share	350	USD 64.37	USD 22,530	SEC filing ↗
2026-05-19	Thau Daniel Mark	Purchase (P)	Common Stock, par value $0.0001 per share	300	USD 65.09	USD 19,527	SEC filing ↗
2025-12-04	Thau Daniel Mark	Purchase (P)	Common Stock, par value $0.0001 per share	400	USD 51.05	USD 20,420	SEC filing ↗
2025-05-28	Thau Daniel Mark	Purchase (P)	Common Stock, par value $0.0001 per share	400	USD 39.17	USD 15,668	SEC filing ↗
2025-02-18	Thau Daniel Mark	Purchase (P)	Common Stock, par value $0.0001 per share	500	USD 34.85	USD 17,425	SEC filing ↗
2024-12-09	Thau Daniel Mark	Purchase (P)	Common Stock, par value $0.0001 per share	700	USD 39.18	USD 27,426	SEC filing ↗
2021-08-19	Horlock Phil	Purchase (P)	Common Stock, par value $0.0001 per share	5,000	USD 20.26	USD 101,300	SEC filing ↗

Form 4 evidence

39 transaction lines in the latest 365-day window; 282 in local history.

Date	Owner	Type	Security	Shares	Avg. price	Approx. value	Source
2026-09-16	Sanfrey Jeffrey Scott	Sale (S)	Common Stock, par value $0.0001 per share	4,000	USD 62.40	USD 249,600	SEC filing ↗
2026-08-12	Thau Daniel Mark	Purchase (P)	Common Stock, par value $0.0001 per share	350	USD 64.37	USD 22,530	SEC filing ↗
2026-05-19	Thau Daniel Mark	Purchase (P)	Common Stock, par value $0.0001 per share	300	USD 65.09	USD 19,527	SEC filing ↗

Show recent Form 4 evidence (30 grouped rows)

Date	Owner	Type	Security	Shares	Avg. price	Approx. value	Source
2026-09-16	Sanfrey Jeffrey Scott	Sale (S)	Common Stock, par value $0.0001 per share	4,000	USD 62.40	USD 249,600	SEC filing ↗
2026-08-12	Thau Daniel Mark	Purchase (P)	Common Stock, par value $0.0001 per share	350	USD 64.37	USD 22,530	SEC filing ↗
2026-05-19	Thau Daniel Mark	Purchase (P)	Common Stock, par value $0.0001 per share	300	USD 65.09	USD 19,527	SEC filing ↗
2026-04-01	Girardin Steve	Award / grant (A)	Special Voting Preferred Stock	1	USD —	USD —	SEC filing ↗
2026-04-01	Girardin Steve	Award / grant (A)	Common Stock, par value $0.0001 per share	2,297	USD 0.00	USD 0	SEC filing ↗
2026-04-01	Thau Daniel Mark	Award / grant (A)	Common Stock, par value $0.0001 per share	2,297	USD 0.00	USD 0	SEC filing ↗
2026-04-01	Penn Kevin S.	Award / grant (A)	Common Stock, par value $0.0001 per share	2,297	USD 0.00	USD 0	SEC filing ↗
2026-04-01	Newman Simon J	Award / grant (A)	Common Stock, par value $0.0001 per share	2,297	USD 0.00	USD 0	SEC filing ↗
2026-04-01	Hightower Edward T.	Award / grant (A)	Common Stock, par value $0.0001 per share	2,297	USD 0.00	USD 0	SEC filing ↗
2026-04-01	Grimm Douglas J.	Award / grant (A)	Common Stock, par value $0.0001 per share	2,297	USD 0.00	USD 0	SEC filing ↗
2026-04-01	Fream Julie A	Award / grant (A)	Common Stock, par value $0.0001 per share	2,297	USD 0.00	USD 0	SEC filing ↗
2026-04-01	Blaufuss Mark	Award / grant (A)	Common Stock, par value $0.0001 per share	2,297	USD 0.00	USD 0	SEC filing ↗
2026-03-04	Sanfrey Jeffrey Scott	Sale (S)	Common Stock, par value $0.0001 per share	5,192	USD 58.54	USD 303,940	SEC filing ↗
2026-03-04	Sanfrey Jeffrey Scott	Option exercise / conversion (M)	Common Stock, par value $0.0001 per share	5,192	USD 12.35	USD 64,121	SEC filing ↗
2026-02-19	Radulescu Razvan	Sale (S)	Common Stock, par value $0.0001	3,925	USD 60.98	USD 239,346	SEC filing ↗
2025-12-17	Radulescu Razvan	Sale (S)	Common Stock, par value $0.0001	7,006	USD 51.58	USD 361,369	SEC filing ↗
2025-12-17	Radulescu Razvan	Option exercise / conversion (M)	Common Stock, par value $0.0001	3,503	USD 12.35	USD 43,262	SEC filing ↗
2025-12-12	Scartz Ted	Tax withholding (F)	Common Stock, par value $0.0001 per share	626	USD 50.36	USD 31,525	SEC filing ↗
2025-12-12	Sanfrey Jeffrey Scott	Tax withholding (F)	Common Stock, par value $0.0001 per share	549	USD 50.36	USD 27,648	SEC filing ↗
2025-12-12	Radulescu Razvan	Tax withholding (F)	Common Stock, par value $0.0001	2,907	USD 50.36	USD 146,397	SEC filing ↗
2025-12-12	Horlock Phil	Sale (S)	Common Stock, par value $0.0001 per share	15,381	USD 50.42	USD 775,489	SEC filing ↗
2025-12-10	Radulescu Razvan	Sale (S)	Common Stock, par value $0.0001	7,984	USD 50.39	USD 402,314	SEC filing ↗
2025-12-06	Scartz Ted	Tax withholding (F)	Common Stock, par value $0.0001 per share	881	USD 51.27	USD 45,169	SEC filing ↗
2025-12-06	Sanfrey Jeffrey Scott	Tax withholding (F)	Common Stock, par value $0.0001 per share	753	USD 51.27	USD 38,606	SEC filing ↗
2025-12-06	Radulescu Razvan	Tax withholding (F)	Common Stock, par value $0.0001	3,287	USD 51.27	USD 168,524	SEC filing ↗
2025-12-04	Thau Daniel Mark	Purchase (P)	Common Stock, par value $0.0001 per share	400	USD 51.05	USD 20,420	SEC filing ↗
2025-12-02	Wyskiel John	Tax withholding (F)	Common Stock, par value $0.0001	14,447	USD 50.70	USD 732,463	SEC filing ↗
2025-12-02	Wyskiel John	Award / grant (A)	Common Stock, par value $0.0001	48,331	USD 0.00	USD 0	SEC filing ↗
2025-12-02	Scartz Ted	Tax withholding (F)	Common Stock, par value $0.0001 per share	820	USD 50.70	USD 41,574	SEC filing ↗
2025-12-02	Scartz Ted	Award / grant (A)	Common Stock, par value $0.0001 per share	13,468	USD 0.00	USD 0	SEC 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 date	2026-10-18
Ranking version	US-v1.2
Data quality	PASS ELIGIBLE · —
Ticker	BLBD
CIK	0001589526
Sector	Consumer Cyclical
Industry	Farm & Heavy Construction Machinery Yahoo Finance
SEC SIC	3713 Truck & Bus Bodies
Exchange	Nasdaq

Data coverage

Local Form 4 history	282 transaction lines from 2020-01-03 to 2026-09-16 7 P purchase lines · 74 S sale lines · 201 other lines
SEC company submissions	Open SEC filings ↗

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