CLBK
Columbia Financial, Inc.
AI summary Insider cluster purchase accompanies major corporate conversion and Northfield Bancorp acquisition.
77
- Research score
- 81
- AI adjustment
- -4
Research score, not a recommendation.
Total bought$4.7M29 Form 4 purchases
Distinct insiders16open-market buyers
Lead insiderKemly Thomas J.CEO
Cluster window2026-07-20single day · active
Market data
Live quote and chart from Yahoo Finance, loaded through this server. Insider purchases are marked on the chart.
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partial data Market cap is missing; missing inputs count as neutral in the score.
same price, one day All 29 purchases were at $10.00 on 2026-07-20. That pattern also occurs in IPO or conversion subscriptions, which are not open-market conviction buying.
Why this score
Research score: a weighted blend of the five factors, times the routine and offering discounts, minus the selling penalty.
Breadth
number & diversity of participating insiders
100%
Seniority
executive rank of buyers (CEO/CFO/Director)
89%
Commitment
purchase size relative to company & holdings
64%
Context
buying into stock weakness signals conviction
50%
Timing
coordinated purchases within a tight window
100%
Routine-purchase discount
× 0.97
Company-type / offering discount
× 1.00
Net insider selling penalty
− 0
Why are they buying?
AI · mixed · catalyst credible · documentedInsiders likely timed their open-market and plan-related stock purchases around the pivotal corporate conversion from a partially public mutual holding company to a fully public stock holding company and the concurrent acquisition of Northfield Bancorp, Inc.
A large cluster of executive officers and directors made open-market purchases on July 20, 2026, totaling substantial volume at $10.00 per share, supported by filings detailing the joint proxy statement for the conversion and acquisition.
Filing references and sources
Stock Price & Insider Purchase History
Daily close price with open-market insider purchases plotted over time
Loading price history…
| Date | Insider | Role | Shares | Price | Value | Flags | Filing |
|---|---|---|---|---|---|---|---|
| 2026-07-20 | Kemly Thomas J. history of Kemly Thomas J.'s purchases | CEO | 53,057 | $10.00 avg | $530.6K | ||
| 2026-07-20 | Kemly Thomas J. | 40,000 | $10.00 | $400.0K | SEC filing for Kemly Thomas J. (opens in a new tab) | ||
| 2026-07-20 | Kemly Thomas J. | 13,057 | $10.00 | $130.6K | SEC filing for Kemly Thomas J. (opens in a new tab) | ||
| 2026-07-20 | Splaine Thomas Jr history of Splaine Thomas Jr's purchases | CFO | 50,000 | $10.00 | $500.0K | SEC filing for Splaine Thomas Jr (opens in a new tab) | |
| 2026-07-20 | Schlesinger Allyson Katz history of Schlesinger Allyson Katz's purchases | Other officer | 50,000 | $10.00 avg | $500.0K | ||
| 2026-07-20 | Schlesinger Allyson Katz | 44,400 | $10.00 | $444.0K | SEC filing for Schlesinger Allyson Katz (opens in a new tab) | ||
| 2026-07-20 | Schlesinger Allyson Katz | 5,600 | $10.00 | $56.0K | SEC filing for Schlesinger Allyson Katz (opens in a new tab) | ||
| 2026-07-20 | Klein Steven M history of Klein Steven M's purchases | COO | 50,000 | $10.00 | $500.0K | SEC filing for Klein Steven M (opens in a new tab) | |
| 2026-07-20 | Randall Elizabeth E. history of Randall Elizabeth E.'s purchases | Director | 49,980 | $10.00 avg | $499.8K | ||
| 2026-07-20 | Randall Elizabeth E. | 10,580 | $10.00 | $105.8K | SEC filing for Randall Elizabeth E. (opens in a new tab) | ||
| 2026-07-20 | Randall Elizabeth E. | 27,200 | $10.00 | $272.0K | SEC filing for Randall Elizabeth E. (opens in a new tab) | ||
| 2026-07-20 | Randall Elizabeth E. | 12,200 | $10.00 | $122.0K | SEC filing for Randall Elizabeth E. (opens in a new tab) | ||
| 2026-07-20 | Gibney Dennis E. history of Gibney Dennis E.'s purchases | Other C-suite | 44,500 | $10.00 avg | $445.0K | ||
| 2026-07-20 | Gibney Dennis E. | 12,500 | $10.00 | $125.0K | SEC filing for Gibney Dennis E. (opens in a new tab) | ||
| 2026-07-20 | Gibney Dennis E. | 11,500 | $10.00 | $115.0K | SEC filing for Gibney Dennis E. (opens in a new tab) | ||
| 2026-07-20 | Gibney Dennis E. | 20,500 | $10.00 | $205.0K | SEC filing for Gibney Dennis E. (opens in a new tab) | ||
| 2026-07-20 | Klimowich John history of Klimowich John's purchases | Other C-suite | 35,000 | $10.00 avg | $350.0K | ||
| 2026-07-20 | Klimowich John | 5,000 | $10.00 | $50.0K | SEC filing for Klimowich John (opens in a new tab) | ||
| 2026-07-20 | Klimowich John | 30,000 | $10.00 | $300.0K | SEC filing for Klimowich John (opens in a new tab) | ||
| 2026-07-20 | Massood Michael Jr. history of Massood Michael Jr.'s purchases | Director | 25,000 | $10.00 avg | $250.0K | ||
| 2026-07-20 | Massood Michael Jr. | 10,000 | $10.00 | $100.0K | SEC filing for Massood Michael Jr. (opens in a new tab) | ||
| 2026-07-20 | Massood Michael Jr. | 15,000 | $10.00 | $150.0K | SEC filing for Massood Michael Jr. (opens in a new tab) | ||
| 2026-07-20 | Van Dyk Robert history of Van Dyk Robert's purchases | Director | 25,000 | $10.00 | $250.0K | SEC filing for Van Dyk Robert (opens in a new tab) | |
| 2026-07-20 | Sorrentini Lucy history of Sorrentini Lucy's purchases | Director | 20,000 | $10.00 | $200.0K | SEC filing for Sorrentini Lucy (opens in a new tab) | |
| 2026-07-20 | Prabhu Manesh Balachandran history of Prabhu Manesh Balachandran's purchases | Other C-suite | 15,000 | $10.00 | $150.0K | SEC filing for Prabhu Manesh Balachandran (opens in a new tab) | |
| 2026-07-20 | Lewis Oliver Edward Jr history of Lewis Oliver Edward Jr's purchases | Other officer | 15,000 | $10.00 avg | $150.0K | ||
| 2026-07-20 | Lewis Oliver Edward Jr | 500 | $10.00 | $5.0K | SEC filing for Lewis Oliver Edward Jr (opens in a new tab) | ||
| 2026-07-20 | Lewis Oliver Edward Jr | 14,500 | $10.00 | $145.0K | SEC filing for Lewis Oliver Edward Jr (opens in a new tab) | ||
| 2026-07-20 | Rinaldi Mayra Liseth history of Rinaldi Mayra Liseth's purchases | EVP / SVP | 10,337 | $10.00 avg | $103.4K | ||
| 2026-07-20 | Rinaldi Mayra Liseth | 9,000 | $10.00 | $90.0K | SEC filing for Rinaldi Mayra Liseth (opens in a new tab) | ||
| 2026-07-20 | Rinaldi Mayra Liseth | 30 | $10.00 | $300 | SEC filing for Rinaldi Mayra Liseth (opens in a new tab) | ||
| 2026-07-20 | Rinaldi Mayra Liseth | 100 | $10.00 | $1.0K | SEC filing for Rinaldi Mayra Liseth (opens in a new tab) | ||
| 2026-07-20 | Rinaldi Mayra Liseth | 50 | $10.00 | $500 | SEC filing for Rinaldi Mayra Liseth (opens in a new tab) | ||
| 2026-07-20 | Rinaldi Mayra Liseth | 1,157 | $10.00 | $11.6K | SEC filing for Rinaldi Mayra Liseth (opens in a new tab) | ||
| 2026-07-20 | Kuiken James Michael history of Kuiken James Michael's purchases | Director | 10,000 | $10.00 | $100.0K | SEC filing for Kuiken James Michael (opens in a new tab) | |
| 2026-07-20 | WAINWRIGHT JIM HOBART history of WAINWRIGHT JIM HOBART's purchases | Director | 10,000 | $10.00 | $100.0K | SEC filing for WAINWRIGHT JIM HOBART (opens in a new tab) | |
| 2026-07-20 | Holland Noel R. history of Holland Noel R.'s purchases | Director | 7,500 | $10.00 | $75.0K | SEC filing for Holland Noel R. (opens in a new tab) | |
| Total | $4.7M | ||||||