Kimberly E. Ritrievi made one open market purchase of Mativ Holdings, Inc. ($MATV) shares in the last year, totaling about $59,000, with her most recent buy on May 29, 2025. Her activity ranks 2,836th among nearly 5,000 insiders, below the average purchase of $1.5 million across 3.3 transactions. She reported no open market sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1925 | $0.00 | 1,925.0000 | 262,731,000 | 50.00% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 2050 | $0.00 | 0.0000 | 262,731,000 | 100.00% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | COMMON STOCK | 795 | $0.00 | 160,633.0000 | 262,731,000 | 0.50% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | COMMON STOCK | 1900 | $0.00 | 162,533.0000 | 262,731,000 | 1.18% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | COMMON STOCK | 2125 | $0.00 | 164,658.0000 | 262,731,000 | 1.31% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | COMMON STOCK | 1718 | $0.00 | 166,376.0000 | 262,731,000 | 1.04% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | A | COMMON STOCK | 25883 | $0.00 | 192,259.0000 | 262,731,000 | 15.56% | 0.01% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 4500 | $0.00 | 0.0000 | 262,731,000 | 100.00% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 2250 | $0.00 | 2,250.0000 | 262,731,000 | 50.00% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 2910 | $0.00 | 0.0000 | 262,731,000 | 100.00% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1718 | $0.00 | 0.0000 | 262,731,000 | 100.00% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 2125 | $0.00 | 0.0000 | 262,731,000 | 100.00% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1900 | $0.00 | 0.0000 | 262,731,000 | 100.00% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 795 | $0.00 | 0.0000 | 262,731,000 | 100.00% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 795 | $0.00 | 0.0000 | 262,731,000 | 100.00% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | COMMON STOCK | 4500 | $0.00 | 149,908.0000 | 262,731,000 | 3.09% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | COMMON STOCK | 2250 | $0.00 | 152,158.0000 | 262,731,000 | 1.50% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | COMMON STOCK | 1925 | $0.00 | 154,083.0000 | 262,731,000 | 1.27% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | COMMON STOCK | 2910 | $0.00 | 156,993.0000 | 262,731,000 | 1.89% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | COMMON STOCK | 2050 | $0.00 | 159,043.0000 | 262,731,000 | 1.31% | 0.00% |
| March 16, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | M | COMMON STOCK | 795 | $0.00 | 159,838.0000 | 262,731,000 | 0.50% | 0.00% |
| Jan. 12, 2026 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | A | COMMON STOCK | 2208 | $0.00 | 145,408.0000 | 262,731,000 | 1.54% | 0.00% |
| Nov. 19, 2025 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | A | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1964 | $0.00 | 1,964.0000 | 267,123,000 | 9999.99% | 0.00% |
| July 1, 2025 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 382 | $5.55 | 39,943.0000 | 54,648,991 | 0.97% | 0.00% |
| July 1, 2025 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 18328 | $6.82 | 39,561.0000 | 54,648,991 | 86.32% | 0.03% |
| May 29, 2025 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | P | Common Stock | 10000 | $5.88 | 30,640.0000 | 54,335,830 | 48.45% | 0.02% |
| April 1, 2025 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 262 | $6.07 | 21,233.0000 | 54,335,830 | 1.25% | 0.00% |
| April 1, 2025 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 5008 | $6.24 | 20,971.0000 | 54,335,830 | 31.37% | 0.01% |
| Nov. 20, 2024 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | J | COMMON STOCK | 0 | $0.00 | 143,200.0000 | 271,656,000 | 0.00% | 0.00% |
| Jan. 3, 2025 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 2866 | $10.90 | 15,865.0000 | 54,335,830 | 22.05% | 0.01% |
| Jan. 3, 2025 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 98 | $13.15 | 15,963.0000 | 54,335,830 | 0.62% | 0.00% |
| Nov. 20, 2024 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | A | RESTRICTED STOCK UNITS (RIGHT TO RECEIVE) | 1718 | $0.00 | 1,718.0000 | 271,656,000 | 9999.99% | 0.00% |
| Nov. 20, 2024 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | A | COMMON STOCK | 2390 | $0.00 | 145,590.0000 | 271,656,000 | 1.67% | 0.00% |
| Oct. 1, 2024 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 59 | $18.56 | 12,999.0000 | 54,328,913 | 0.46% | 0.00% |
| Oct. 1, 2024 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 1839 | $16.99 | 12,940.0000 | 54,328,913 | 16.57% | 0.00% |
| Sept. 11, 2024 | TETRA TECH INC | $TTEK | Ritrievi Kimberly E | Director | S | COMMON STOCK | 6500 | $46.48 | 143,200.0000 | 270,260,000 | 4.34% | 0.00% |
| July 1, 2024 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 1400 | $16.96 | 11,050.0000 | 54,324,185 | 14.51% | 0.00% |
| July 1, 2024 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 51 | $18.72 | 11,101.0000 | 54,324,185 | 0.46% | 0.00% |
| April 1, 2024 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 1266 | $18.75 | 9,604.0000 | 54,211,124 | 15.18% | 0.00% |
| April 1, 2024 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 46 | $18.00 | 9,650.0000 | 54,211,124 | 0.48% | 0.00% |
| Jan. 2, 2024 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 235 | $15.96 | 8,338.0000 | 54,211,124 | 2.90% | 0.00% |
| Jan. 2, 2024 | Mativ Holdings, Inc. | $MATV | Ritrievi Kimberly E | Not found | A | Phantom Stock Units | 1551 | $15.31 | 8,103.0000 | 54,211,124 | 23.67% | 0.00% |