← United States · Coverage record
US · SEC FORM 4
Mistras Group, Inc.
MG · NYSE · CIK 0001436126 · Industrials · Security & Protection Services
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
13 Form 4 transaction lines observed in the same window
0 sales · 13 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; 4 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: 2025-09-15 · Coggins Eileen Mary.
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
- 938,098
- Previous report
- 1,074,399
- Avg daily volume
- 726,681
- Days to cover
- 1.3
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 |
|---|---|---|---|---|---|---|---|
| 2025-09-15 | Coggins Eileen Mary | Purchase (P) | Common Stock | 15,000 | USD 9.55 | USD 143,250 | SEC filing ↗ |
| 2025-06-05 | Stamatakis Manuel N. | Purchase (P) | Common Stock | 10,000 | USD 7.71 | USD 77,100 | SEC filing ↗ |
| 2025-03-20 | DEBENEDICTIS NICHOLAS | Purchase (P) | Common Stock | 1,038 | USD 10.01 | USD 10,390 | SEC filing ↗ |
| 2025-03-19 | Stamatakis Manuel N. | Purchase (P) | Common Stock | 10,000 | USD 9.95 | USD 99,500 | SEC filing ↗ |
| 2025-03-19 | DEBENEDICTIS NICHOLAS | Purchase (P) | Common Stock | 8,962 | USD 10.04 | USD 89,978 | SEC filing ↗ |
| 2025-03-18 | DEBENEDICTIS NICHOLAS | Purchase (P) | Common Stock | 10,000 | USD 9.84 | USD 98,400 | SEC filing ↗ |
| 2023-12-20 | DEBENEDICTIS NICHOLAS | Purchase (P) | Common Stock | 3,000 | USD 7.05 | USD 21,150 | SEC filing ↗ |
| 2023-12-13 | DEBENEDICTIS NICHOLAS | Purchase (P) | Common Stock | 2,000 | USD 6.60 | USD 13,200 | SEC filing ↗ |
| 2023-12-11 | DEBENEDICTIS NICHOLAS | Purchase (P) | Common Stock | 100 | USD 6.50 | USD 650 | SEC filing ↗ |
| 2023-11-09 | DEBENEDICTIS NICHOLAS | Purchase (P) | Common Stock | 3,684 | USD 5.94 | USD 21,883 | SEC filing ↗ |
| 2023-11-08 | DEBENEDICTIS NICHOLAS | Purchase (P) | Common Stock | 120 | USD 5.80 | USD 696 | SEC filing ↗ |
| 2023-11-07 | Stamatakis Manuel N. | Purchase (P) | Common Stock | 15,000 | USD 6.00 | USD 90,000 | SEC filing ↗ |
| 2022-03-25 | GLANTON RICHARD H | Purchase (P) | Common Stock | 753 | USD 6.37 | USD 4,797 | SEC filing ↗ |
| 2021-08-17 | Stamatakis Manuel N. | Purchase (P) | Common Stock | 5,000 | USD 9.62 | USD 48,100 | SEC filing ↗ |
| 2021-05-11 | Stamatakis Manuel N. | Purchase (P) | Common Stock | 15,000 | USD 9.98 | USD 149,700 | SEC filing ↗ |
Form 4 evidence
38 transaction lines in the latest 365-day window; 316 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-20 | D'Alterio Gennaro A. | Tax withholding (F) | Common Stock | 662 | USD 20.75 | USD 13,736 | SEC filing ↗ |
| 2026-09-18 | Coggins Eileen Mary | Tax withholding (F) | Common Stock | 1,636 | USD 19.66 | USD 32,164 | SEC filing ↗ |
| 2026-09-10 | Vahaviolos Aspasia Felice | Gift (G) | Common Stock | 387,093 | USD 0.00 | USD 0 | SEC filing ↗ |
Show recent Form 4 evidence (30 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-09-20 | D'Alterio Gennaro A. | Tax withholding (F) | Common Stock | 662 | USD 20.75 | USD 13,736 | SEC filing ↗ |
| 2026-09-18 | Coggins Eileen Mary | Tax withholding (F) | Common Stock | 1,636 | USD 19.66 | USD 32,164 | SEC filing ↗ |
| 2026-09-10 | Vahaviolos Aspasia Felice | Gift (G) | Common Stock | 387,093 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-10 | 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos; Foglia Stephanie Athena | Gift (G) | Common Stock | 387,093 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-09-08 | SHUMAN-FABBRI NATALIA | Tax withholding (F) | Common Stock | 2,410 | USD 19.42 | USD 46,802 | SEC filing ↗ |
| 2026-06-10 | Vahaviolos Aspasia Felice | Gift (G) | Common Stock | 411,875 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-06-10 | 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos; Foglia Stephanie Athena | Gift (G) | Common Stock | 411,875 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-19 | PIZZI CHARLES P | Award / grant (A) | Common Stock | 6,862 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-19 | Lohmeier Michelle | Award / grant (A) | Common Stock | 6,862 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-19 | GLANTON RICHARD H | Award / grant (A) | Common Stock | 6,862 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-19 | FORESE JAMES J | Award / grant (A) | Common Stock | 6,862 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-05-19 | DEBENEDICTIS NICHOLAS | Award / grant (A) | Common Stock | 6,862 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-27 | 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos; Foglia Stephanie Athena | Gift (G) | Common Stock | 528,672 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-04-17 | 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos; Foglia Stephanie Athena | Sale (S) | Common Stock | 1,000 | USD 18.00 | USD 18,000 | SEC filing ↗ |
| 2026-03-26 | Hammad Hanei Wail | Tax withholding (F) | Common Stock | 2,865 | USD 15.10 | USD 43,262 | SEC filing ↗ |
| 2026-03-22 | Prajzner Edward J | Tax withholding (F) | Common Stock | 1,367 | USD 14.05 | USD 19,206 | SEC filing ↗ |
| 2026-03-16 | Prajzner Edward J | Tax withholding (F) | Common Stock | 2,239 | USD 14.61 | USD 32,712 | SEC filing ↗ |
| 2026-03-07 | Prajzner Edward J | Tax withholding (F) | Common Stock | 2,540 | USD 14.82 | USD 37,643 | SEC filing ↗ |
| 2026-03-04 | Stamatakis Manuel N. | Tax withholding (F) | Common Stock | 814 | USD 15.68 | USD 12,764 | SEC filing ↗ |
| 2026-03-04 | Prajzner Edward J | Tax withholding (F) | Common Stock | 698 | USD 15.68 | USD 10,945 | SEC filing ↗ |
| 2026-03-04 | Hammad Hanei Wail | Tax withholding (F) | Common Stock | 337 | USD 15.68 | USD 5,284 | SEC filing ↗ |
| 2026-03-04 | D'Alterio Gennaro A. | Tax withholding (F) | Common Stock | 184 | USD 15.68 | USD 2,885 | SEC filing ↗ |
| 2026-02-28 | Prajzner Edward J | Tax withholding (F) | Common Stock | 1,303 | USD 15.28 | USD 19,910 | SEC filing ↗ |
| 2026-02-28 | D'Alterio Gennaro A. | Tax withholding (F) | Common Stock | 1,517 | USD 15.28 | USD 23,180 | SEC filing ↗ |
| 2026-02-25 | Hammad Hanei Wail | Award / grant (A) | Common Stock | 29,762 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-25 | Stamatakis Manuel N. | Award / grant (A) | Common Stock | 86,310 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-25 | SHUMAN-FABBRI NATALIA | Award / grant (A) | Common Stock | 101,190 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-25 | Prajzner Edward J | Award / grant (A) | Common Stock | 37,202 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-25 | Hammad Hanei Wail | Award / grant (A) | Common Stock | 29,762 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-02-25 | Coggins Eileen Mary | Award / grant (A) | Common Stock | 7,242 | 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 | MG |
| CIK | 0001436126 |
| Sector | Industrials |
| Industry | Security & Protection Services Yahoo Finance |
| SEC SIC | 8711 Services-Engineering Services |
| Exchange | NYSE |
Data coverage
| Local Form 4 history | 316 transaction lines from 2020-01-02 to 2026-09-20 27 P purchase lines · 15 S sale lines · 274 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.