NB Bancorp, Inc. Form 4 Filings

NB Bancorp, Inc. (NBBK) reported that officer Jean-Pierre Lapointe, SEVP and CFO, purchased 200 shares of common stock on August 20, 2026 at $21.80 per share in an open-market or private transaction. Following this purchase, he directly holds 110,531 shares of common stock, including restricted stock that vests 20% per year beginning April 24, 2026 and 33 1/3% per year beginning February 25, 2027. He also indirectly holds 4,339 shares through a 401(k) plan and 1,779 shares through an ESOP.

NB Bancorp, Inc. (NBBK) reports that EVP and Chief Credit Officer Kevin Henkin sold 2,000 shares of common stock on August 14, 2026 at $22.93 per share in an open-market or private transaction. Following this sale, he holds 6,874 direct shares, some of which are restricted stock that vest 33 1/3% per year starting February 25, 2027. He also reports indirect ownership of 5,342 shares via a 401(k) and 2,964 shares via an ESOP, with those plan-related amounts noted as transactions not required to be reported under Section 16.

NB Bancorp, Inc. President, CEO and Chairman Joseph P. Campanelli reported multiple open-market purchases of the company’s Common Stock on May 15, 2026. He bought a total of 3,000 shares at prices around $19.17–$19.21 per share. After these purchases, he directly owns 377,790 shares of NB Bancorp common stock. He also reports indirect holdings of 3,677 shares through an ESOP, 50,470 shares through a 401(k), 47,000 shares in an IRA, and 3,000 shares as trustee for a trust. Some of the reported direct holdings include restricted stock that vests gradually beginning in 2026 and 2027.

NB Bancorp, Inc. director Christopher R. Lynch filed an amended insider report updating his share holdings. The filing shows he holds 96,922 shares of common stock directly and 60,000 shares indirectly through an IRA. These amounts include restricted stock that vests 20% per year starting on April 24, 2026, and additional restricted shares that vest fully on January 2, 2027.

The amendment notes that an earlier Form 4 filed on April 27, 2026 mistakenly reported a sale of common stock that did not actually occur, and the beneficial ownership figures have been corrected accordingly.

NB Bancorp, Inc. director Kenneth C. Montgomery filed an amended Form 4 to update his holdings of common stock. The filing shows he beneficially owns 85,140 shares directly after correcting a previously reported change. A prior Form 4 filed on April 27, 2026 had mistakenly reported a disposition of common shares that did not actually occur, and this amendment reverses that error.

The holding includes restricted stock that vests 100% on January 2, 2027, as well as additional restricted shares that vest at a rate of 20% per year starting April 24, 2026. The amendment does not report any new purchase or sale, but clarifies his current equity position and the scheduled vesting of his awards.

NB Bancorp, Inc. director Joseph R. Nolan Jr. filed an amended Form 4 to correct a previously reported disposition of common stock that the footnotes state did not occur. The amendment shows he directly holds 87,739 shares of common stock.

This holding includes restricted stock that vests at a rate of 20% per year commencing on April 24, 2026, and additional restricted shares that vest 100% on January 2, 2027. The filing updates his beneficial ownership without recording a new purchase or sale.

NB Bancorp, Inc. director Mark Whalen filed an amended Form 4 that updates his reported holdings without showing any new buy or sell transactions. The filing reports 77,639 shares of common stock held directly and 30,000 shares held indirectly as trustee for a trust.

Footnotes explain that the direct holdings include restricted stock that vests 20% per year starting on April 24, 2026 and additional restricted stock vesting 100% on January 2, 2027. The amendment corrects a previously filed Form 4 that had mistakenly reported a disposition of common shares that did not actually occur.

NB Bancorp, Inc. director Angela Jackson filed an amended insider report to correct a previously reported share disposition that did not actually occur. The filing shows she beneficially owns 81,255 shares of common stock, including restricted stock that vests 20% per year starting April 24, 2026 and additional restricted shares that vest 100% on January 2, 2027.

NB Bancorp, Inc. director William Darcey filed an amended Form 4 to correct a prior error. A Form 4 filed on April 27, 2026 had mistakenly reported a sale of common stock that never occurred, and this amendment updates the beneficial ownership records.

Following the correction, Darcey is shown holding 80,000 shares of common stock indirectly through an IRA and 82,639 shares directly. The direct holdings include restricted stock that vests 20% per year starting on April 24, 2026, plus additional restricted shares vesting 100% on January 2, 2027.

NB Bancorp, Inc. President & CEO Joseph P. Campanelli reported multiple open‑market purchases of Common Stock on April 24, 2026, totaling 2,500 shares at prices between $19.33 and $19.63 per share.

Following these trades and a 24,371‑share tax‑withholding disposition, he directly held 374,790 shares, in addition to indirect holdings through an ESOP, 401(k), trust, and IRA.

NB Bancorp, Inc. director Darcey William reported routine updates to his share holdings. An entry reflects 80,000 shares of common stock held indirectly through an IRA. In a separate transaction, 4,918 shares were disposed of at $19.82 per share as a tax-withholding disposition, leaving 77,721 shares held directly.

The direct and indirect holdings include restricted stock that vests 20% per year starting on April 24, 2026, and additional restricted stock that vests 100% on January 2, 2027, indicating a portion of his position is tied to future vesting schedules.

NB Bancorp, Inc. director Angela Jackson reported a routine tax-withholding disposition of company stock. On April 24, 2026, 4,918 shares of NB Bancorp Common Stock were delivered at $19.82 per share to satisfy tax obligations, rather than sold in the open market. After this transaction, Jackson directly held 76,337 shares of NB Bancorp, including restricted stock that vests 20% per year starting April 24, 2026 and additional restricted stock that vests 100% on January 2, 2027.

NB Bancorp, Inc. director Mark Whalen reported routine share movements related to compensation and holdings. The Form 4 shows a tax-withholding disposition of 4,918 shares of common stock at $19.82 per share, used to satisfy tax obligations rather than an open-market sale. After this transaction, Whalen directly owns 72,721 common shares. He also indirectly holds 30,000 shares as trustee for a trust. Footnotes indicate his position includes restricted stock that vests 20% per year starting on April 24, 2026, and another grant that vests 100% on January 2, 2027, reflecting ongoing equity-based compensation.

NB Bancorp, Inc. director Joseph R. Nolan Jr. reported a tax-related share disposition. On April 24, 2026, he transferred 4,918 shares of common stock at $19.82 per share to cover tax obligations by delivering shares, rather than selling them on the open market.

After this tax-withholding disposition, he directly holds 82,821 shares of NB Bancorp common stock. These holdings include restricted stock that is scheduled to vest 20% per year starting on April 24, 2026, and additional restricted shares that vest 100% on January 2, 2027.

NB Bancorp, Inc. director Kenneth C. Montgomery reported a tax-withholding disposition of 5,015 shares of common stock at $19.82 per share on April 24, 2026. The shares were delivered to cover tax obligations related to equity awards rather than sold in the open market.

After this transaction, Montgomery directly holds 80,125 shares, including restricted stock that vests 100% on January 2, 2027 and additional restricted shares vesting 20% per year starting April 24, 2026.

NB Bancorp, Inc. director Christopher R. Lynch reported routine share updates, including a tax-related share disposition. On April 24, 2026, 4,150 shares of common stock were disposed of at $19.82 per share to cover tax obligations, a non-market “F” code transaction. After this, he held 92,772 common shares directly and 60,000 shares indirectly through an IRA. Footnotes note that his holdings include restricted stock that vests 20% per year starting April 24, 2026 and additional restricted stock vesting 100% on January 2, 2027.

NB Bancorp, Inc. Senior Executive Vice President and Chief Operating Officer Christine Roberts reported a tax-related share disposition on Common Stock. On April 24, 2026, 3,589 shares were used to satisfy tax obligations at a price of $19.82 per share, a non–open-market event. After this withholding, she holds 71,081 shares directly, including restricted stock that vests 20% per year starting April 24, 2026, and 33 1/3% per year starting February 25, 2027.

NB Bancorp, Inc. director Hope Pascucci reported open-market purchases of company stock. On April 24, 2026, Pascucci bought 10,000 common shares at $19.4889 per share and another 10,000 shares at $19.4392 per share.

After these transactions, Pascucci directly holds 142,402 common shares and indirectly holds 80,000 shares through a spouse. The reported holdings include restricted stock that vests 20% per year starting April 24, 2026 and a separate restricted grant vesting 100% on January 2, 2027.

NB Bancorp, Inc. executive Matthew G. Schulman, EVP and President of Needham Private Bank, reported an acquisition of 6,980 shares of common stock as a stock grant. The award was recorded at $0.00 per share, reflecting compensation rather than an open-market purchase.

The filing shows Schulman now directly holds 6,980 common shares, all from this grant. According to the footnote, these restricted shares vest in installments of 33 1/3% per year, beginning on March 9, 2027, which means the award becomes fully vested over three years.

NB Bancorp, Inc. President, CEO and Chairman Joseph P. Campanelli reported open-market share purchases. On March 6, 2026, he bought 5,000 shares of common stock in total, including 2,000 shares through an IRA at $20.78 per share and 3,000 shares as trustee for a trust at $20.77 per share.

Following these transactions, the IRA held 47,000 shares and the trust held 3,000 shares. Separate holding entries show 394,161 shares held directly, 49,597 shares indirectly through a 401(k), and 3,677 shares indirectly through an ESOP as of that date. Footnotes state the direct holdings include restricted stock vesting 20% per year starting April 24, 2026 and 33 1/3% per year starting February 25, 2027.

NB Bancorp, Inc.’s President & CEO and Chairman Joseph P. Campanelli reported an open-market purchase of 2,500 shares of common stock at $20.16 per share. This buy on March 19, 2026 brought his direct holdings to 396,661 shares.

He also reports indirect ownership of common stock, including 47,000 shares held by an IRA, 49,597 shares held by a 401(k), 3,677 shares held by an ESOP, and 3,000 shares held as trustee for a trust. The filing notes that his reported holdings include restricted stock scheduled to vest in tranches beginning on April 24, 2026 and February 25, 2027.

NB Bancorp, Inc. President, CEO and Chairman Joseph P. Campanelli reported indirect open‑market purchases of a total of 5,000 shares of common stock on March 6, 2026. An IRA associated with him bought 2,000 shares at $20.78 per share, and a trust for which he serves as trustee bought 3,000 shares at $20.77 per share.

Following these trades, the IRA held 47,000 shares and the trust held 3,000 shares. Separate reported holdings show additional direct and indirect common stock positions, including restricted stock that vests 20% per year starting April 24, 2026 and 33 1/3% per year starting February 25, 2027.

NB Bancorp, Inc. Senior Executive Vice President and CFO Jean-Pierre Lapointe reported an open-market purchase of 1,000 shares of common stock at $20.42 per share. Following this transaction, he directly owns 110,331 shares, and also has indirect holdings through a 401(k) plan and an ESOP. Footnotes note that part of his holdings are restricted stock that vest over several years.

CAMPANELLI JOSEPH P reported acquisition or exercise transactions in this Form 4 filing.

NB Bancorp, Inc. President and CEO Joseph P. Campanelli received a grant of 63,015 shares of common stock as a restricted stock award on February 25, 2026 at a stated price of $0.0000 per share. These restricted shares vest at a rate of 33 1/3% per year starting on February 25, 2027.

After this grant, his directly held common stock totals 394,161 shares. He also has indirect ownership through retirement and employee plans, including 45,000 shares held by an IRA, 49,597 shares held by a 401(k), and 3,677 shares held by an ESOP. Some of the reported totals include earlier restricted stock that vests 20% per year beginning April 24, 2026.

White James J. reported acquisition or exercise transactions in this Form 4 filing.

NB Bancorp EVP James J. White received a grant of 6,874 shares of common stock on February 25, 2026 at no purchase price. These restricted shares vest in three equal annual installments starting February 25, 2027. After the grant, he directly owns 16,874 shares, along with additional indirect holdings through an IRA, 401(k), and ESOP accounts.

EVANGELISTA PAUL A reported acquisition or exercise transactions in this Form 4 filing.

NB Bancorp, Inc. executive Paul A. Evangelista, EVP and Director of the Special Banking Center, received a grant of 6,874 shares of restricted common stock on February 25, 2026 at a stated price of $0.00 per share. After this award, his direct common stock holdings total 33,440 shares.

The restricted shares vest in equal installments of 33 1/3% per year, beginning on February 25, 2027. The filing also shows indirect holdings of 14,743 shares through a 401(k) plan and 3,588 shares through an ESOP as of the same date, with a footnote indicating these reflect transactions not required to be reported under Section 16.

Henkin Kevin reported acquisition or exercise transactions in this Form 4 filing.

NB Bancorp, Inc. executive vice president and chief credit officer Kevin Henkin received a grant of 6,874 shares of common stock on February 25, 2026 as a restricted stock award at no cost. These restricted shares vest in equal installments of 33 1/3% per year starting on February 25, 2027.

Richardson Matthew reported acquisition or exercise transactions in this Form 4 filing.

NB Bancorp, Inc. executive Matthew Richardson reported an award of common stock under the company’s equity compensation program. He received 13,749 shares of restricted common stock at a price of $0.00 per share, increasing his directly held common stock to 13,749 shares.

The restricted shares vest in stages, with 33 1/3% of the award vesting each year starting on February 25, 2027. This means the grant is intended as long‑term incentive compensation that fully vests over three years if service-based conditions are met.

NB Bancorp, Inc. SEVP and CFO Jean-Pierre Lapointe reported an equity award of 13,749 shares of common stock on this Form 4. The shares were acquired as a grant/award at a stated price of $0.00 per share, increasing his directly held common stock to 109,331 shares after the transaction.

These new shares are restricted stock that vest in three equal installments of 33 1/3% per year starting on February 25, 2027. The filing also shows indirect holdings through a 401(k) plan and an ESOP, with 4,018 and 1,779 shares of common stock, respectively, following the reported date.

NB Bancorp, Inc. executive Christine Roberts, SEVP and COO, reported acquiring 13,749 shares of common stock through a restricted stock award at a price of $0 per share. These restricted shares vest at a rate of 33 1/3% per year starting on February 25, 2027.

Following this grant, Roberts directly holds a total of 74,670 common shares, which includes earlier restricted stock awards that vest at 20% per year commencing on April 24, 2026. These awards represent equity-based compensation rather than open-market purchases.

Daley James B. reported acquisition or exercise transactions in this Form 4 filing.

NB Bancorp, Inc. reported that executive vice president James B. Daley received a grant of 6,874 shares of common stock as a restricted stock award. The shares vest in installments of 33 1/3% per year starting on February 25, 2027. The filing also notes additional indirect common stock holdings in a 401(k) plan and an ESOP, which are reflected as position updates rather than new reportable transactions.

Maiona Stephanie reported acquisition or exercise transactions in this Form 4 filing.

NB Bancorp, Inc. executive Stephanie Maiona reported receiving a grant of 6,874 shares of restricted common stock. These shares vest in equal installments of 33 1/3% per year starting on February 25, 2027. Following this grant, she directly holds 6,874 shares, with additional indirect holdings through a 401(k) plan and an ESOP.

NB Bancorp, Inc. director Mary Susan Elliott reported open-market purchases of the company’s common stock. On January 24, 2025, she bought 10,000 shares at $18.72 each, bringing her directly held position to 115,761 shares, including restricted stock that vests 20% annually starting April 24, 2026 and a grant vesting 100% on January 2, 2027. On May 2, 2025, an additional 1,434 shares were acquired at $21.39 per share and are held indirectly through her spouse.

NB Bancorp, Inc. reported that a director acquired 5,524 shares of restricted common stock on January 2, 2026 at a stated price of $0 per share. These restricted shares vest 100% on January 2, 2027, meaning they become fully owned at that time if conditions are met. After this grant, the director beneficially owns 105,761 shares of NB Bancorp stock in total, including other restricted shares that vest at a rate of 20% per year starting on April 24, 2026. The filing is made as a single-reporting-person Form 4 for a board member.

NB Bancorp, Inc. director reported an equity grant under the company’s stock program. On 01/02/2026, the director acquired 7,685 shares of common stock as restricted stock at a stated price of $0, reflecting an award rather than an open‑market purchase.

After this transaction, the director beneficially owns 96,922 shares of common stock directly and an additional 60,000 shares indirectly through an IRA. The 7,685 restricted shares vest 100% on January 2, 2027, and the direct holdings also include restricted shares that vest at a rate of 20% per year starting on April 24, 2026. This filing shows ongoing equity-based alignment between the director and the company.

NB Bancorp, Inc. reported an insider equity transaction by one of its directors. On January 2, 2026, the director acquired 4,803 shares of NB Bancorp common stock as a grant of restricted stock at a stated price of $0 per share. After this grant, the director beneficially owns a total of 85,140 shares of common stock in direct form.

The filing explains that the 4,803 restricted shares vest 100% on January 2, 2027, and that the total also includes other restricted shares that vest at a rate of 20% per year starting on April 24, 2026. This reflects ongoing equity-based compensation aligning the director’s holdings with the company’s stock over a multi‑year schedule.

NB Bancorp, Inc. director Angela Jackson reported receiving 2,402 shares of common stock as a stock award on January 2, 2026. The award was granted at a price of $0 per share, indicating a restricted stock grant rather than an open-market purchase. After this grant, Jackson beneficially owned 81,255 NB Bancorp shares directly.

According to the footnotes, the 2,402 restricted shares vest 100% on January 2, 2027. The total 81,255 shares also include restricted stock that vests 20% per year starting April 24, 2026, showing that a portion of her holdings is subject to multi-year vesting schedules.

NB Bancorp, Inc. director Joseph R. Nolan Jr. reported acquiring 2,402 shares of the company’s common stock on January 2, 2026. The shares were acquired at a price of $0 per share and are described as restricted stock that vests 100% on January 2, 2027. Following this transaction, Nolan beneficially owned a total of 87,739 shares of NB Bancorp common stock in direct ownership. The total includes other restricted shares that vest at a rate of 20% per year beginning April 24, 2026.

NB Bancorp director Raza Muhammad reported receiving an award of 2,402 shares of NB Bancorp, Inc. common stock on January 2, 2026, coded as an acquisition at a price of $0. These shares are restricted stock that vest 100% on January 2, 2027.

After this award, he beneficially owns 77,639 shares of common stock directly, which include shares of restricted stock that vest at a rate of 20% per year starting April 24, 2026. He also reports indirect beneficial ownership of 3,706 shares held by an IRA.

NB Bancorp, Inc. director Francis Orfanello reported a grant of 5,403 shares of common stock on January 2, 2026, at a price of $0 per share. After this award, he directly beneficially owned 135,640 common shares and indirectly held an additional 7,500 shares through a retirement plan. The 5,403-share grant consists of restricted stock that vests 100% on January 2, 2027. His existing holdings include restricted shares that vest at a rate of 20% per year starting April 24, 2026.

NB Bancorp, Inc. (NBBK) director Darcey William reported an award of 2,402 shares of common stock on January 2, 2026. The shares were granted at a price of $0.00 per share and are described as restricted stock that will vest 100% on January 2, 2027.

Following this grant, William beneficially owned 82,639 shares of NB Bancorp common stock in direct form, which includes other restricted shares that vest at a rate of 20% per year commencing on April 24, 2026. In addition, the filing notes indirect ownership of 80,000 shares held by an IRA.

NB Bancorp (NBBK) disclosed an insider ownership update on Form 4. On 11/10/2025, a director reported a bona fide gift of 2,725 shares at $0. After the transaction, the reporting person held 89,237 shares directly and 60,000 shares indirectly via an IRA. The direct holdings include restricted stock that vests 20% per year commencing on April 24, 2026.

NB Bancorp, Inc. (NBBK) reported an insider transaction on Form 4. A director recorded a gift of 600 shares of common stock on October 30, 2025 at a stated price of $0.

Following the transaction, the reporting person beneficially owned 91,962 shares directly and 60,000 shares indirectly through an IRA. The reported holdings include restricted stock that vests at 20% per year commencing on April 24, 2026.

NB Bancorp, Inc. (NBBK) reported an insider transaction on Form 4. A director purchased 4,688 shares of common stock on 10/28/2025 at an average price of $18.0678 per share.

Following the trade, the director beneficially owns 120,000 shares directly and 80,000 shares indirectly held by spouse.

The holdings include restricted stock that vests at a rate of 20% per year commencing on April 24, 2026.