Mesa Laboratories Inc /Co/ (MLAB) insider trading.
In Q3 2026, insiders at Mesa Laboratories Inc /Co/ reported 9 non-derivative transactions on 15 Forms 3, 4 and 5: 2 open-market purchases worth $902K and 1 sale worth $800K.
- Transactions
- 9
- Purchases (P)
- 2
- Sales (S)
- 1
- Net shares, P minus S
- 900
- Insiders
- 7
- Last filed
- 2026-08-17
Insiders
| Insider | Relationship | Transactions | Buys | Sales |
|---|---|---|---|---|
| Sullivan John James | Director | 2 | 0 | 1 |
| Tripeny R Tony | Director | 2 | 1 | 0 |
| Hall Shannon | Director | 1 | 0 | 0 |
| Ladiwala Shiraz Shabanali | Director | 1 | 0 | 0 |
| Alltoft Jennifer Sadie | Director | 1 | 0 | 0 |
| Capone Mark Christopher | Director | 1 | 0 | 0 |
| Kadia Siddhartha | Officer · President and CEO | 1 | 1 | 0 |
Transactions
| Date | Insider | Code | Shares | Price | Owned after | Filing |
|---|---|---|---|---|---|---|
| 2026-08-15 | Sullivan John James | M (A) | 2,784 | $0 | 20,618 | Form 4 |
| 2026-08-15 | Tripeny R Tony | M (A) | 2,784 | $0 | 9,082 | Form 4 |
| 2026-08-15 | Hall Shannon | M (A) | 2,784 | $0 | 6,973 | Form 4 |
| 2026-08-15 | Ladiwala Shiraz Shabanali | M (A) | 3,810 | $0 | 12,333 | Form 4 |
| 2026-08-15 | Alltoft Jennifer Sadie | M (A) | 2,784 | $0 | 7,662 | Form 4 |
| 2026-08-15 | Capone Mark Christopher | M (A) | 2,784 | $0 | 6,213 | Form 4 |
| 2026-08-13 | Tripeny R Tony | P (A) | 900 | $113.69 | 6,298 | Form 4 |
| 2026-08-13 | Kadia Siddhartha | P (A) | 7,093 | $112.8 | 7,093 | Form 4 |
| 2026-08-13 | Sullivan John James | S (D) | 7,093 | $112.8 | 17,834 | Form 4 |
Transaction codes in this quarter
Get MLAB insider transactions through the API
curl "https://sec-api.dev/api/v1/insider-transactions?period=2026q3&cik=724004&limit=100" \
-H "Authorization: Bearer $SEC_API_KEY"Insider trading API guide · MLAB company page · Mesa Laboratories Inc /Co/ on SEC.gov
Questions
Are insiders buying or selling Mesa Laboratories Inc /Co/ (MLAB)?
In Q3 2026, insiders at Mesa Laboratories Inc /Co/ reported 9 non-derivative transactions on 15 Forms 3, 4 and 5: 2 open-market purchases worth $902K and 1 sale worth $800K. Grants, tax withholding and option exercises are counted as transactions but are not purchases or sales.
Where do these Mesa Laboratories Inc /Co/ insider trades come from?
From the SEC Insider Transactions Data Sets for Q3 2026, which republish the Forms 3, 4 and 5 filed on EDGAR. Each row links to its filing on SEC.gov.
Plain-text version for agents and LLMs: /insider-trading/mlab.md
Independent. Not affiliated with, endorsed by, or sponsored by the U.S. Securities and Exchange Commission. Data is reproduced from public SEC filings and datasets. Not investment advice.