← United States · Coverage record
US · SEC FORM 4
FEDERAL SIGNAL CORP /DE/
FSS · NYSE · CIK 0000277509 · Consumer Cyclical · Farm & Heavy Construction Machinery
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
25 Form 4 transaction lines observed in the same window
5 sales · 20 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
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.
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.
Showing the six most active owners; 5 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
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2026-03-10 · Maue Richard A.
Recent Form 4 activity
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
- 3,784,692
- Previous report
- 3,877,971
- Avg daily volume
- 491,053
- Days to cover
- 7.7
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 |
|---|---|---|---|---|---|---|---|
| 2026-03-10 | Maue Richard A | Purchase (P) | Common Stock | 2,000 | USD 110.77 | USD 221,540 | SEC filing ↗ |
| 2025-02-28 | SHERMAN JENNIFER L | Purchase (P) | Common Stock | 1,250 | USD 82.32 | USD 102,900 | SEC filing ↗ |
| 2022-03-03 | SHERMAN JENNIFER L | Purchase (P) | Common Stock | 2,800 | USD 34.60 | USD 96,880 | SEC filing ↗ |
| 2020-05-01 | SHERMAN JENNIFER L | Purchase (P) | Common Stock | 1,000 | USD 25.87 | USD 25,870 | SEC filing ↗ |
| 2020-03-13 | Hudson Ian A. | Purchase (P) | Common Stock | 3,266 | USD 27.15 | USD 88,672 | SEC filing ↗ |
| 2020-03-02 | Workman John L | Purchase (P) | Common Stock | 5,000 | USD 29.48 | USD 147,400 | SEC filing ↗ |
Form 4 evidence
60 transaction lines in the latest 365-day window; 321 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-25 | Vaillancourt Eric A. | Award / grant (A) | Common Stock | 104 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-25 | Maue Richard A | Award / grant (A) | Common Stock | 108 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-08-04 | REICHELDERFER BRENDA | Sale (S) | Common Stock | 6,070 | USD 131.02 | USD 795,291 | SEC filing ↗ |
Show recent Form 4 evidence (30 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-25 | Vaillancourt Eric A. | Award / grant (A) | Common Stock | 104 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-25 | Maue Richard A | Award / grant (A) | Common Stock | 108 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-08-04 | REICHELDERFER BRENDA | Sale (S) | Common Stock | 6,070 | USD 131.02 | USD 795,291 | SEC filing ↗ |
| 2026-08-04 | REICHELDERFER BRENDA | Gift (G) | Common Stock | 7,650 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-08-04 | Bonina Diane | Sale (S) | Common Stock | 14,756 | USD 130.44 | USD 1,924,726 | SEC filing ↗ |
| 2026-08-04 | Bonina Diane | Option exercise / conversion (M) | Common Stock | 14,856 | USD 42.75 | USD 635,109 | SEC filing ↗ |
| 2026-08-03 | Bonina Diane | Sale (S) | Common Stock | 4,408 | USD 128.75 | USD 567,530 | SEC filing ↗ |
| 2026-06-26 | Vaillancourt Eric A. | Award / grant (A) | Common Stock | 96 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-26 | Maue Richard A | Award / grant (A) | Common Stock | 99 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-04 | WEBER MARK | Tax withholding (F) | Common Stock | 2,278 | USD 117.49 | USD 267,642 | SEC filing ↗ |
| 2026-05-04 | SHERMAN JENNIFER L | Tax withholding (F) | Common Stock | 7,695 | USD 117.49 | USD 904,086 | SEC filing ↗ |
| 2026-05-04 | Hudson Ian A. | Tax withholding (F) | Common Stock | 1,657 | USD 117.49 | USD 194,681 | SEC filing ↗ |
| 2026-05-04 | Bonina Diane | Tax withholding (F) | Common Stock | 962 | USD 117.49 | USD 113,025 | SEC filing ↗ |
| 2026-05-01 | SHERMAN JENNIFER L | Option exercise / conversion (M) | Common Stock | 59,242 | USD 12.66 | USD 750,004 | SEC filing ↗ |
| 2026-05-01 | SHERMAN JENNIFER L | Tax withholding (F) | Common Stock | 29,680 | USD 121.61 | USD 3,609,385 | SEC filing ↗ |
| 2026-04-21 | Workman John L | Award / grant (A) | Common Stock | 1,277 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-21 | Vaillancourt Eric A. | Award / grant (A) | Common Stock | 1,277 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-21 | REICHELDERFER BRENDA | Award / grant (A) | Common Stock | 1,674 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-21 | Patel Shashank | Award / grant (A) | Common Stock | 1,277 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-21 | Maue Richard A | Award / grant (A) | Common Stock | 1,277 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-21 | Lowe Eugene Joseph III | Award / grant (A) | Common Stock | 1,277 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-21 | Helmkamp Katrina L | Award / grant (A) | Common Stock | 1,277 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-27 | Vaillancourt Eric A. | Award / grant (A) | Common Stock | 42 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-27 | Maue Richard A | Award / grant (A) | Common Stock | 43 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-03-10 | Maue Richard A | Purchase (P) | Common Stock | 2,000 | USD 110.77 | USD 221,540 | SEC filing ↗ |
| 2026-03-04 | REICHELDERFER BRENDA | Gift (G) | Common Stock | 215 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-27 | WEBER MARK | Award / grant (A) | Common Stock | 2,577 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-27 | SHERMAN JENNIFER L | Award / grant (A) | Common Stock | 11,810 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-27 | Hudson Ian A. | Award / grant (A) | Common Stock | 2,416 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-27 | Bonina Diane | Award / grant (A) | Common Stock | 1,396 | 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 | FSS |
| CIK | 0000277509 |
| Sector | Consumer Cyclical |
| Industry | Farm & Heavy Construction Machinery Yahoo Finance |
| SEC SIC | 3711 Motor Vehicles & Passenger Car Bodies |
| Exchange | NYSE |
Data coverage
| Local Form 4 history | 321 transaction lines from 2020-01-16 to 2026-09-25 6 P purchase lines · 44 S sale lines · 271 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.