The following are the most recent form 4 filings (Statement of Changes in Beneficial Ownership) filed with the U.S. Securities and Exchange Commission (SEC) by insiders in the industry of Measuring, Analyzing, And Controlling Instruments; Photographic, Medical And Optical Goods; Watches And Clocks. Use the links in the Company column and the Insider column to view the insider trading activities of a company or a corporate insider.
Note: Only open market buys (B) and sales (S) are included in the table below.
| Company (Symbol)  | Insider | Shares & price | Report Date | 
|---|---|---|---|
| Inari Medical, Inc. (NARI) | Hykes Andrew (Chief Operating Officer) | 9000 (S) $109.30 | 2021-03-19 | 
| Electromedical Technologies, Inc (EMED) | STEINBERG DONALD J (10% owner) | 10000 (S) $0.31 | 2021-03-19 | 
| PAVmed Inc. (PAVM) | Aklog Lishan (Chairman and CEO) | 7500 (B) $4.31 | 2021-03-18 | 
| INTEGRA LIFESCIENCES HOLDINGS CORP (IART) | ESSIG STUART (Director) | 214553 (S) $68.14 | 2021-03-18 | 
| GenMark Diagnostics, Inc. (GNMK) | Jensen Tyler (SVP, Engineering and Tech Dev) | 500 (S) $23.88 | 2021-03-18 | 
| 10x Genomics, Inc. (TXG) | STUELPNAGEL JOHN R (Director) | 7500 (S) $169.62 | 2021-03-17 | 
| T2 Biosystems, Inc. (TTOO) | Barclay Alec (Chief Operations Officer) | 12494 (S) $1.86 | 2021-03-17 | 
| ESTABLISHMENT LABS HOLDINGS INC. (ESTA) | LEWIN NICHOLAS SHERIDAN (Director) | 350 (B) $59.97 | 2021-03-17 | 
| T2 Biosystems, Inc. (TTOO) | Pare Anthony (Chief Commercial Officer) | 9620 (S) $1.84 | 2021-03-17 | 
| FREQUENCY ELECTRONICS INC (FEIM) | Edenbrook Capital, LLC (10% owner) | 21210 (B) $11.85 | 2021-03-17 | 
| Fossil Group, Inc. (FOSL) | Evans Steve Andrew (Executive Vice President) | 50602 (S) $14.03 | 2021-03-17 | 
| AMETEK INC/ (AME) | Hardin John Wesley (PRES. - ELECTRONIC INSTRUMENTS) | 4148 (S) $124.00 | 2021-03-16 | 
| IMAGE SENSING SYSTEMS INC (ISNS) | Daly Joseph Patrick (Director) | 1107 (B) $4.73 | 2021-03-16 | 
| MESA LABORATORIES INC /CO/ (MLAB) | GUILLEMIN EVAN (Director) | 720 (S) $269.48 | 2021-03-16 | 
| Quanterix Corp (QTRX) | HRUSOVSKY E KEVIN (Chairman, President & CEO) | 5000 (S) $60.97 | 2021-03-16 | 
| BOSTON SCIENTIFIC CORP (BSX) | Pierce David A (EVP Pres MedSurg) | 7603 (S) $39.36 | 2021-03-16 | 
| II-VI INC (IIVI) | MATTERA VINCENT D JR (Chief Executive Officer) | 8500 (S) $71.96 | 2021-03-16 | 
| ORTHOPEDIATRICS CORP (KIDS) | Infante (Reynolds) Marie C (Director) | 700 (S) $45.78 | 2021-03-16 | 
| electroCore, Inc. (ECOR) | GANDOLFO JOHN P (Director) | 4000 (B) $2.15 | 2021-03-16 | 
| Shockwave Medical, Inc. (SWAV) | WATKINS FRANK T (Director) | 4000 (S) $114.14 | 2021-03-16 | 
| Berkeley Lights, Inc. (BLI) | Breinlinger Keith (Chief Technical Officer) | 8250 (S) $54.13 | 2021-03-16 | 
| ILLUMINA, INC. (ILMN) | FLATLEY JAY T (Director) | 4000 (S) $421.06 | 2021-03-16 | 
| SI-BONE, Inc. (SIBN) | Freund John Gordon (Other) | 721253 (S) $30.74 | 2021-03-16 | 
| MERIT MEDICAL SYSTEMS INC (MMSI) | Frost Ronald (CHIEF OPERATING OFFICER) | 5000 (S) $60.60 | 2021-03-16 | 
| RESMED INC (RMD) | Douglas Robert Andrew (President and COO ResMed Inc.) | 1081 (S) $185.48 | 2021-03-15 | 
| KNOW LABS, INC. (KNWN) | PEPPER JON (Director) | 50000 (B) $2.00 | 2021-03-15 | 
| KNOW LABS, INC. (KNWN) | OWENS WILLIAM ARTHUR (Director) | 62500 (B) $2.00 | 2021-03-15 | 
| Medtronic plc (MDT) | PARKHILL KAREN L (EVP & Chief Financial Officer) | 632 (S) $119.12 | 2021-03-15 | 
| BIOLIFE SOLUTIONS INC (BLFS) | Hinson Andrew G (Director) | 2500 (S) $37.32 | 2021-03-15 | 
| TANDEM DIABETES CARE INC (TNDM) | BLICKENSTAFF KIM D (Director) | 200000 (S) $87.52 | 2021-03-15 | 
| ORTHOPEDIATRICS CORP (KIDS) | Ruf Harold (Director) | 2880 (B) $46.98 | 2021-03-15 | 
| ORTHOPEDIATRICS CORP (KIDS) | Pelizzon David R (Director) | 3700 (B) $46.50 | 2021-03-15 | 
| Fossil Group, Inc. (FOSL) | McKelvey Gregory A (Executive Vice President) | 75000 (S) $14.17 | 2021-03-15 | 
| Fossil Group, Inc. (FOSL) | Tifford Gail B (Director) | 6500 (S) $14.20 | 2021-03-15 | 
| IKONICS CORP (IKNX) | ULLAND WILLIAM C (10% owner) | 10000 (S) $10.47 | 2021-03-15 | 
| UFP TECHNOLOGIES INC (UFPT) | Litterio Christopher P. (Senior Vice President) | 870 (S) $50.02 | 2021-03-12 | 
| Electromedical Technologies, Inc (EMED) | STEINBERG DONALD J (10% owner) | 10000 (S) $0.28 | 2021-03-12 | 
| MSA Safety Inc (MSA) | Rogers Sandra Phillips (Director) | 1000 (S) $164.29 | 2021-03-12 | 
| FREQUENCY ELECTRONICS INC (FEIM) | Edenbrook Capital, LLC (10% owner) | 7908 (B) $11.81 | 2021-03-12 | 
| Inari Medical, Inc. (NARI) | Cooperatieve Gilde Healthcare IV U.A. (10% owner) | 1450000 (S) $116.14 | 2021-03-12 | 
| HARVARD BIOSCIENCE INC (HBIO) | Green James W (Chief Executive Officer) | 35000 (S) $5.98 | 2021-03-12 | 
| MERIT MEDICAL SYSTEMS INC (MMSI) | LAMPROPOULOS FRED P (PRESIDENT AND CEO) | 4947 (S) $59.60 | 2021-03-12 | 
| Sientra, Inc. (SIEN) | MILLER VALERIE J (VP, Controller and Interim CFO) | 1582 (S) $7.49 | 2021-03-12 | 
| TransMedics Group, Inc. (TMDX) | Carey John F (VP of Operations) | 3200 (S) $37.50 | 2021-03-11 | 
| TERADYNE, INC (TER) | GILLIS EDWIN J (Director) | 19015 (S) $111.29 | 2021-03-11 | 
| IMAX CORP (IMAX) | WELTON MARK (President, IMAX Theatres) | 5000 (S) $22.69 | 2021-03-11 | 
| Berkeley Lights, Inc. (BLI) | MARKS MICHAEL E (Director) | 28260 (S) $54.69 | 2021-03-11 | 
| SI-BONE, Inc. (SIBN) | Freund John Gordon (Other) | 235887 (S) $31.11 | 2021-03-11 | 
| UTAH MEDICAL PRODUCTS INC (UTMD) | PAYNE BARBARA A (Director) | 1000 (S) $90.00 | 2021-03-10 | 
| CRYOLIFE INC (CRY) | Holloway Jean F (SVP, General Counsel) | 1693 (S) $25.28 | 2021-03-10 | 
| RESMED INC (RMD) | Sandercock Brett (Chief Financial Officer) | 2500 (S) $185.00 | 2021-03-10 | 
| DEXCOM INC (DXCM) | Abbey Donald (EVP Quality and Regulatory Aff) | 5566 (S) $362.92 | 2021-03-10 | 
| NORTHROP GRUMMAN CORP /DE/ (NOC) | Addison Ann M (Corp VP & Chief HR Officer) | 955 (S) $299.78 | 2021-03-10 | 
| Alphatec Holdings, Inc. (ATEC) | Pritzker Jennifer N. (10% owner) | 3000 (B) $16.38 | 2021-03-10 | 
| Apollo Endosurgery, Inc. (APEN) | BARR JOHN R (Director) | 10000 (B) $5.88 | 2021-03-10 | 
| DEXCOM INC (DXCM) | Balo Andrew K (*) | 5566 (S) $362.92 | 2021-03-10 | 
| DEXCOM INC (DXCM) | Blackford Quentin S. (Chief Operating Officer & CFO) | 6509 (S) $362.22 | 2021-03-10 | 
| DEXCOM INC (DXCM) | Leach Jacob Steven (EVP Chief Technology Officer) | 5353 (S) $362.92 | 2021-03-10 | 
| DEXCOM INC (DXCM) | Murphy Patrick Michael (EVP, Chief Legal Officer) | 3471 (S) $362.92 | 2021-03-10 | 
| DEXCOM INC (DXCM) | Pacelli Steven Robert (EVP Strategy and Corporate Dev) | 5566 (S) $362.92 | 2021-03-10 | 
| DEXCOM INC (DXCM) | SAYER KEVIN R (Chairman, CEO & President) | 14044 (S) $362.92 | 2021-03-10 | 
| DEXCOM INC (DXCM) | Selvaraj Shelly Ramasamy (SVP Information Technology) | 4567 (S) $359.39 | 2021-03-10 | 
| DEXCOM INC (DXCM) | Sylvain Jereme M (SVP, Finance & CAO) | 941 (S) $362.92 | 2021-03-10 | 
| IKONICS CORP (IKNX) | NERGES JOSEPH R (Confidentiality agreement) | 6621 (S) $10.65 | 2021-03-10 | 
| Inari Medical, Inc. (NARI) | MILDER DONALD B (Other) | 7000 (S) $116.61 | 2021-03-10 | 
| LEMAITRE VASCULAR INC (LMAT) | LeMaitre George W (Chairman and CEO) | 25000 (S) $49.19 | 2021-03-10 | 
| ALLIED HEALTHCARE PRODUCTS INC (AHPI) | REFSLAND EARL R (President and CEO) | 110080 (S) $5.16 | 2021-03-09 | 
| Alphatec Holdings, Inc. (ATEC) | Black Jeffrey G. (EVP & CFO) | 7000 (S) $16.69 | 2021-03-09 | 
| Avantor, Inc. (AVTR) | Vanderhaegen Frederic (EVP, Europe) | 10000 (S) $28.21 | 2021-03-09 | 
| Alphatec Holdings, Inc. (ATEC) | TULLIS JAMES L L (Director) | 22500 (S) $16.24 | 2021-03-09 | 
| Berkeley Lights, Inc. (BLI) | MARKS MICHAEL E (Director) | 130000 (S) $53.57 | 2021-03-09 | 
| Neuronetics, Inc. (STIM) | Furlong Stephen (CFO) | 6521 (S) $14.64 | 2021-03-09 | 
| Neuronetics, Inc. (STIM) | Harper Gregory (VP of Prod. Dev. & Operations) | 5524 (S) $14.65 | 2021-03-09 | 
| LEMAITRE VASCULAR INC (LMAT) | Roberts David B (President and Director) | 22193 (S) $47.63 | 2021-03-09 | 
| Neuronetics, Inc. (STIM) | MACAN WILLIAM ANDREW (Sr. VP, GC, CCO and Secretary) | 8537 (S) $14.65 | 2021-03-09 | 
| SeaSpine Holdings Corp (SPNE) | Gaeta Renee (Director) | 2920 (S) $18.28 | 2021-03-08 | 
| MSA Safety Inc (MSA) | RYAN JOHN T III (Director) | 1677 (S) $164.00 | 2021-03-08 | 
| Alphatec Holdings, Inc. (ATEC) | Pelizzon David R (10% owner) | 4698 (B) $15.71 | 2021-03-08 | 
| HAEMONETICS CORP (HAE) | Basil Michelle L (EVP and General Counsel) | 385 (S) $120.07 | 2021-03-08 | 
| NovoCure Ltd (NVCR) | Cordova Ashley (Chief Financial Officer) | 765 (S) $130.81 | 2021-03-08 | 
| NovoCure Ltd (NVCR) | GROENHUYSEN WILHELMUS CM (Chief Operating Officer) | 3004 (S) $130.81 | 2021-03-08 | 
| HAEMONETICS CORP (HAE) | Scanlan Jacqueline (SVP, Global Human Resources) | 107 (S) $120.07 | 2021-03-08 | 
| Quanterix Corp (QTRX) | HRUSOVSKY E KEVIN (Chairman, President & CEO) | 5000 (S) $66.46 | 2021-03-08 | 
| UFP TECHNOLOGIES INC (UFPT) | KOZIN MARC D (Director) | 14000 (S) $43.98 | 2021-03-08 | 
| NORTHROP GRUMMAN CORP /DE/ (NOC) | Kalan Lesley A (CVP, Chief Strategy & Dev Ofc) | 1560 (S) $308.31 | 2021-03-08 | 
| Keysight Technologies, Inc. (KEYS) | NYE JEAN HALLORAN (Director) | 375 (B) $134.76 | 2021-03-08 | 
| NovoCure Ltd (NVCR) | Leonard Frank X (Chief Development Officer) | 765 (S) $130.81 | 2021-03-08 | 
| NovoCure Ltd (NVCR) | Longsworth Todd Christopher (General Counsel) | 2404 (S) $130.81 | 2021-03-08 | 
| NovoCure Ltd (NVCR) | Shah Pritesh (Chief Commercial Officer) | 6151 (S) $130.95 | 2021-03-08 | 
| GenMark Diagnostics, Inc. (GNMK) | Shaw Christine (VP, Assay Development) | 274 (S) $18.56 | 2021-03-05 | 
| TRANSCAT INC (TRNS) | Haseley Gary J. (Chairman of the Board) | 3000 (B) $45.32 | 2021-03-05 | 
| SI-BONE, Inc. (SIBN) | DUNN JEFFREY W (Chairman, President & CEO) | 40000 (S) $28.73 | 2021-03-05 | 
| Inari Medical, Inc. (NARI) | Hoffman William (President and CEO) | 30000 (S) $92.88 | 2021-03-05 | 
| ILLUMINA, INC. (ILMN) | TOUSI SUSAN H (SVP Product Development) | 800 (S) $402.24 | 2021-03-05 | 
| NovoCure Ltd (NVCR) | Benaim Ely (Chief Medical Officer) | 2918 (S) $131.53 | 2021-03-05 | 
| Berkeley Lights, Inc. (BLI) | Rothman James (Director) | 140000 (S) $52.75 | 2021-03-05 | 
| TACTILE SYSTEMS TECHNOLOGY INC (TCMD) | Moen Brent (Chief Financial Officer) | 174 (S) $47.33 | 2021-03-05 | 
| NORTHROP GRUMMAN CORP /DE/ (NOC) | Purvis Shawn N (CVP, Pres, Enterprise Svcs) | 4389 (S) $300.25 | 2021-03-05 | 
| TACTILE SYSTEMS TECHNOLOGY INC (TCMD) | Rishe Bryan (SVP, Sales) | 196 (S) $47.15 | 2021-03-05 | 
| TELEDYNE TECHNOLOGIES INC (TDY) | MEHRABIAN ROBERT (Executive Chairman) | 10000 (B) $362.86 | 2021-03-04 |