United States Homebuilding & Construction Supplies

Griffon Corp (GFF)

Track

Over the last 90 days, insider trading at Griffon Corp shows a net buy of $79,990 from one insider. This contrasts with several significant sell transactions totaling over $12 million by multiple officers and directors in February 2026. The company's stock has seen a 6.6% increase over the past 90 days.
Stock chart
Ticker: GFF Exchange: NYS
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• Purchase • Sale • Planned purchase • Planned sale Net purchase Net sale Activity signal Earnings
Top insiders
Trades
ALPERT HENRY A
1 purchase — total 79,990 USD
Buy 5 Mar 2026
Value US$314,775.00 | Price 435.55 | Shares 59,386
Sale 17 Feb 2026
Value US$4,813,974.80 | Price 355.55 | Shares 77,416
Proposed sale 17 Feb 2026
Value US$920,700.00 | Price 92.07 | Shares 10,000
Sale 13 Feb 2026
Value US$1,023,660.00 | Price 93.06 | Shares 11,000
Proposed sale 13 Feb 2026
Value US$1,030,040.00 | Price 93.64 | Shares 11,000
Sale 12 Feb 2026
Value US$152,724.00 | Price 92.56 | Shares 1,650
Proposed sale 12 Feb 2026
Value US$153,169.50 | Price 92.83 | Shares 1,650
Sale 9 Feb 2026
Value US$295,180.50 | Price 96.15 | Shares 3,070
Sale 9 Feb 2026
Value US$38,984.00 | Price 97.46 | Shares 400
Sale 9 Feb 2026
Value US$313,210.80 | Price 96.67 | Shares 3,240
Sale 9 Feb 2026
Value US$408,637.14 | Price 95.61 | Shares 4,274
Sale 9 Feb 2026
Value US$670,831.62 | Price 94.67 | Shares 7,086
Proposed sale 9 Feb 2026
Value US$295,171.29 | Price 96.15 | Shares 3,070
Proposed sale 9 Feb 2026
Value US$1,422,600.00 | Price 94.84 | Shares 15,000
Proposed sale 9 Feb 2026
Value US$9,484,000.00 | Price 94.84 | Shares 100,000
Sale 7 Feb 2025
Value US$98,224.92 | Price 79.47 | Shares 1,236
Proposed sale 7 Feb 2025
Value US$99,980.00 | Price 80.89 | Shares 1,236
Sale 6 Feb 2025
Value US$110,160.00 | Price 81.00 | Shares 1,360
Sale 6 Feb 2025
Value US$242,400.00 | Price 80.80 | Shares 3,000
Proposed sale 6 Feb 2025
Value US$110,160.00 | Price 81.00 | Shares 1,360
Proposed sale 6 Feb 2025
Value US$242,730.00 | Price 80.91 | Shares 3,000
Proposed sale 6 Dec 2024
Value US$417,271.00 | Price 80.71 | Shares 5,170
Sale 6 Dec 2024
Value US$415,564.60 | Price 80.38 | Shares 5,170
Sale 2 Dec 2024
Value US$8,397.00 | Price 83.97 | Shares 100
Sale 2 Dec 2024
Value US$353,320.65 | Price 83.35 | Shares 4,239
Sale 2 Dec 2024
Value US$686,144.80 | Price 82.40 | Shares 8,327
Sale 2 Dec 2024
Value US$378,732.27 | Price 83.11 | Shares 4,557
Sale 2 Dec 2024
Value US$1,152,618.69 | Price 82.43 | Shares 13,983
Proposed sale 2 Dec 2024
Value US$1,050,771.00 | Price 82.96 | Shares 12,666
Proposed sale 29 Nov 2024
Value US$1,562,900.00 | Price 84.30 | Shares 18,540
Sale 26 Nov 2024
Value US$380,070.00 | Price 84.46 | Shares 4,500
Proposed sale 26 Nov 2024
Value US$372,510.00 | Price 82.78 | Shares 4,500
Sale 18 Nov 2024
Value US$696,261.00 | Price 75.50 | Shares 9,222
Proposed sale 18 Nov 2024
Value US$680,676.00 | Price 73.81 | Shares 9,222
Sale 14 Nov 2024
Value US$156,649.68 | Price 76.34 | Shares 2,052
Sale 14 Nov 2024
Value US$7,753.00 | Price 77.53 | Shares 100
Sale 14 Nov 2024
Value US$839,518.00 | Price 77.02 | Shares 10,900
Sale 14 Nov 2024
Value US$249,116.55 | Price 80.49 | Shares 3,095
Sale 14 Nov 2024
Value US$279,697.20 | Price 76.42 | Shares 3,660
Proposed sale 14 Nov 2024
Value US$279,704.15 | Price 76.42 | Shares 3,660
Proposed sale 14 Nov 2024
Value US$156,641.68 | Price 76.34 | Shares 2,052
Proposed sale 14 Nov 2024
Value US$885,720.00 | Price 80.52 | Shares 11,000
Proposed sale 14 Nov 2024
Value US$249,209.00 | Price 80.52 | Shares 3,095
Sale 13 Nov 2024
Value US$90,144.60 | Price 76.20 | Shares 1,183
Sale 13 Nov 2024
Value US$952,770.90 | Price 75.30 | Shares 12,653
Sale 13 Nov 2024
Value US$573,420.48 | Price 74.82 | Shares 7,664
Sale 13 Nov 2024
Value US$127,618.56 | Price 74.24 | Shares 1,719
Sale 13 Nov 2024
Value US$130,244.53 | Price 73.13 | Shares 1,781
Sale 13 Nov 2024
Value US$1,419,407.73 | Price 78.39 | Shares 18,107
Sale 13 Nov 2024
Value US$1,173,212.60 | Price 77.45 | Shares 15,148
Sale 13 Nov 2024
Value US$1,299,310.00 | Price 76.43 | Shares 17,000
Sale 13 Nov 2024
Value US$6,836,426.94 | Price 75.34 | Shares 90,741
Sale 13 Nov 2024
Value US$5,985,445.60 | Price 74.72 | Shares 80,105
Sale 13 Nov 2024
Value US$808,757.80 | Price 73.39 | Shares 11,020
Sale 13 Nov 2024
Value US$400,972.48 | Price 72.43 | Shares 5,536
Sale 13 Nov 2024
Value US$292,412.00 | Price 71.32 | Shares 4,100
Sale 11 Nov 2024
Value US$609,659.70 | Price 70.10 | Shares 8,697
Sale 11 Nov 2024
Value US$4,706,853.12 | Price 70.08 | Shares 67,164
Sale 16 Oct 2024
Value US$63,894.72 | Price 70.06 | Shares 912
Sale 16 Oct 2024
Value US$457,631.92 | Price 70.06 | Shares 6,532
Sale 2 Oct 2024
Value US$21,021.00 | Price 70.07 | Shares 300
Sale 1 Oct 2024
Value US$127,506.42 | Price 70.02 | Shares 1,821
Sale 1 Oct 2024
Value US$5,880.84 | Price 70.01 | Shares 84
Sale 30 Sep 2024
Value US$218,470.00 | Price 70.00 | Shares 3,121
Sale 27 Sep 2024
Value US$958,710.70 | Price 70.03 | Shares 13,690
Sale 27 Sep 2024
Value US$228,680.60 | Price 70.04 | Shares 3,265
Sale 23 Sep 2024
Value US$222,211.74 | Price 70.01 | Shares 3,174
Sale 23 Sep 2024
Value US$1,409,651.35 | Price 70.01 | Shares 20,135
Sale 20 Sep 2024
Value US$84,482.55 | Price 70.11 | Shares 1,205
Sale 20 Sep 2024
Value US$437,182.62 | Price 70.14 | Shares 6,233
Sale 19 Sep 2024
Value US$536,563.26 | Price 70.02 | Shares 7,663
Sale 19 Sep 2024
Value US$2,748,467.41 | Price 70.03 | Shares 39,247
Sale 19 Sep 2024
Value US$2,130,100.00 | Price 70.00 | Shares 30,430
Sale 18 Sep 2024
Value US$339,080.00 | Price 70.00 | Shares 4,844
Sale 18 Sep 2024
Value US$149,207.58 | Price 69.27 | Shares 2,154
Abbreviations B: Buy, S: Sell, PP: Planned purchase, PlS: Planned sale, PrS: Proposed sale, O: Option / Other
Notification date Transaction date B/S Transaction type Insider and/or position Nb. shares
Price
Value 		Number of shares Price Value Details
2026-03-09 2026-03-05 B Purchase
3.1
ALPERT HENRY A
Non-Executive Director
59,386 -39.4%
435.55
US$314,775 		59,386 -39.4% 435.55 US$314,775
2026-02-18 2026-02-17 S Sale
3.6
Durborow W. Christopher

Vice President & CAO

Officer
77,416 -20.5%
355.55
US$4,813,975 		77,416 -20.5% 355.55 US$4,813,975
2026-02-17 2026-02-17 PrS Proposed sale
3.6
William C Durborow

Officer

Officer
40,812
478.96
US$2,817,033 		40,812 478.96 US$2,817,033
2026-02-17 2026-02-13 S Sale
3.7
Grabowsky Louis J.
Non-Executive Director
11,000 -20.9%
93.06
US$1,023,660 		11,000 -20.9% 93.06 US$1,023,660
2026-02-13 2026-02-13 PrS Proposed sale
3.7
Louis J. Grabowsky

Director

Non-Executive Director
11,000
93.64
US$1,030,040 		11,000 93.64 US$1,030,040
2026-02-17 2026-02-12 S Sale
Taylor Michelle L
Non-Executive Director
1,650 -15.5%
92.56
US$152,724 		1,650 -15.5% 92.56 US$152,724
2026-02-12 2026-02-12 PrS Proposed sale
Taylor Michelle L

Officer

Officer
1,650
92.83
US$153,170 		1,650 92.83 US$153,170
2026-02-11 2026-02-09 S Sale
3.3
SIGHT JAMES W
Non-Executive Director
3,070 -18.1%
96.15
US$295,180 		3,070 -18.1% 96.15 US$295,180
2026-02-11 2026-02-09 S Sale
3.0
Kaplan Seth L.

Sr VP, Gen. Counsel and Secy

Officer
400 -0.3%
97.46
US$38,984 		400 -0.3% 97.46 US$38,984
2026-02-11 2026-02-09 S Sale
3.0
Kaplan Seth L.

Sr VP, Gen. Counsel and Secy

Officer
3,240 -2.6%
96.67
US$313,211 		3,240 -2.6% 96.67 US$313,211
2026-02-11 2026-02-09 S Sale
3.0
Kaplan Seth L.

Sr VP, Gen. Counsel and Secy

Officer
4,274 -3.3%
95.61
US$408,637 		4,274 -3.3% 95.61 US$408,637
2026-02-11 2026-02-09 S Sale
3.0
Kaplan Seth L.

Sr VP, Gen. Counsel and Secy

Officer
7,086 -5.3%
94.67
US$670,832 		7,086 -5.3% 94.67 US$670,832
2026-02-09 2026-02-09 PrS Proposed sale
3.3
JAMES SIGHT

Director

Non-Executive Director
3,070
96.15
US$295,171 		3,070 96.15 US$295,171
2026-02-09 2026-02-09 PrS Proposed sale
3.0
Seth L. Kaplan

Officer

Officer
15,000
94.84
US$1,422,600 		15,000 94.84 US$1,422,600
2026-02-09 2026-02-09 PrS Proposed sale
2.9
Ronald J. Kramer

Director and Officer

Executive Director
100,000
94.84
US$9,484,000 		100,000 94.84 US$9,484,000
2025-02-10 2025-02-07 S Sale
3.3
Hegedus Samanta
Non-Executive Director
1,236 -5.1%
79.47
US$98,225 		1,236 -5.1% 79.47 US$98,225
2025-02-07 2025-02-07 PrS Proposed sale
3.3
Samanta Hegedus Stewart

Director

Non-Executive Director
1,236
80.89
US$99,980 		1,236 80.89 US$99,980
2025-02-07 2025-02-06 S Sale
3.3
SIGHT JAMES W
Non-Executive Director
1,360 -8.1%
81.00
US$110,160 		1,360 -8.1% 81.00 US$110,160
2025-02-07 2025-02-06 S Sale
2.8
TURNBULL CHERYL L
Non-Executive Director
3,000 -8.9%
80.80
US$242,400 		3,000 -8.9% 80.80 US$242,400
2025-02-06 2025-02-06 PrS Proposed sale
3.3
JAMES W SIGHT

Director

Non-Executive Director
1,360
81.00
US$110,160 		1,360 81.00 US$110,160
2025-02-06 2025-02-06 PrS Proposed sale
2.8
Cheryl L. Turnbull

Director

Non-Executive Director
3,000
80.91
US$242,730 		3,000 80.91 US$242,730
2024-12-06 2024-12-06 PrS Proposed sale
3.6
W. Christopher Durborow

Officer

Officer
5,170
80.71
US$417,271 		5,170 80.71 US$417,271
2024-12-06 2024-12-06 S Sale
3.6
Durborow W. Christopher

Vice President & CAO

Officer
5,170 -10.4%
80.38
US$415,565 		5,170 -10.4% 80.38 US$415,565
2024-12-03 2024-12-02 S Sale
3.0
Kaplan Seth L.

Sr VP, Gen. Counsel and Secy

Officer
100 -0.1%
83.97
US$8,397 		100 -0.1% 83.97 US$8,397
2024-12-03 2024-12-02 S Sale
3.0
Kaplan Seth L.

Sr VP, Gen. Counsel and Secy

Officer
4,239 -2.9%
83.35
US$353,321 		4,239 -2.9% 83.35 US$353,321
2024-12-03 2024-12-02 S Sale
3.0
Kaplan Seth L.

Sr VP, Gen. Counsel and Secy

Officer
8,327 -5.3%
82.40
US$686,145 		8,327 -5.3% 82.40 US$686,145
2024-12-03 2024-12-02 S Sale
3.2
Harris Brian G

EVP, Chief Financial Officer

Officer
4,557 -2.7%
83.11
US$378,732 		4,557 -2.7% 83.11 US$378,732
2024-12-03 2024-12-02 S Sale
3.2
Harris Brian G

EVP, Chief Financial Officer

Officer
13,983 -7.6%
82.43
US$1,152,619 		13,983 -7.6% 82.43 US$1,152,619
2024-11-29 2024-12-02 PrS Proposed sale
3.0
Seth L. Kaplan

Officer

Officer
12,666
82.96
US$1,050,771 		12,666 82.96 US$1,050,771
2024-11-29 2024-11-29 PrS Proposed sale
3.2
Harris Brian G

Officer

Officer
18,540
84.30
US$1,562,900 		18,540 84.30 US$1,562,900
2024-11-29 2024-11-26 S Sale
3.3
Renuart Victor Eugene
Non-Executive Director
4,500 -18.9%
84.46
US$380,070 		4,500 -18.9% 84.46 US$380,070
2024-11-26 2024-11-26 PrS Proposed sale
3.3
Renuart Victor Eugene

Director

Non-Executive Director
4,500
82.78
US$372,510 		4,500 82.78 US$372,510
2024-11-20 2024-11-18 S Sale
3.5
Sullivan Kevin F
Non-Executive Director
9,222 -18.3%
75.50
US$696,261 		9,222 -18.3% 75.50 US$696,261
2024-11-18 2024-11-18 PrS Proposed sale
3.5
Kevin F. Sullivan

Director

Non-Executive Director
9,222
73.81
US$680,676 		9,222 73.81 US$680,676
2024-11-15 2024-11-14 S Sale
3.2
Coben Jerome L
Non-Executive Director
2,052 -11.0%
76.34
US$156,650 		2,052 -11.0% 76.34 US$156,650
2024-11-15 2024-11-14 S Sale
3.7
Grabowsky Louis J.
Non-Executive Director
100 -0.2%
77.53
US$7,753 		100 -0.2% 77.53 US$7,753
2024-11-15 2024-11-14 S Sale
3.7
Grabowsky Louis J.
Non-Executive Director
10,900 -17.6%
77.02
US$839,518 		10,900 -17.6% 77.02 US$839,518
2024-11-15 2024-11-14 S Sale
3.3
Hegedus Samanta
Non-Executive Director
3,095 -11.3%
80.49
US$249,117 		3,095 -11.3% 80.49 US$249,117
2024-11-15 2024-11-14 S Sale
3.3
SIGHT JAMES W
Non-Executive Director
3,660 -18.0%
76.42
US$279,697 		3,660 -18.0% 76.42 US$279,697
2024-11-14 2024-11-14 PrS Proposed sale
3.3
JAMES W SIGHT

Director

Non-Executive Director
3,660
76.42
US$279,704 		3,660 76.42 US$279,704
2024-11-14 2024-11-14 PrS Proposed sale
3.2
COBEN REV TRUST

Director

Non-Executive Director
2,052
76.34
US$156,642 		2,052 76.34 US$156,642
2024-11-14 2024-11-14 PrS Proposed sale
3.7
Louis J. Grabowsky

Director

Non-Executive Director
11,000
80.52
US$885,720 		11,000 80.52 US$885,720
2024-11-14 2024-11-14 PrS Proposed sale
3.3
Samanta Hegedus Stewart

Director

Non-Executive Director
3,095
80.52
US$249,209 		3,095 80.52 US$249,209
2024-11-15 2024-11-13 S Sale
3.4
MEHMEL ROBERT F

President and COO

Officer
1,183 -0.2%
76.20
US$90,145 		1,183 -0.2% 76.20 US$90,145
2024-11-15 2024-11-13 S Sale
3.4
MEHMEL ROBERT F

President and COO

Officer
12,653 -1.7%
75.30
US$952,771 		12,653 -1.7% 75.30 US$952,771
2024-11-15 2024-11-13 S Sale
3.4
MEHMEL ROBERT F

President and COO

Officer
7,664 -1.0%
74.82
US$573,420 		7,664 -1.0% 74.82 US$573,420
2024-11-15 2024-11-13 S Sale
3.4
MEHMEL ROBERT F

President and COO

Officer
1,719 -0.2%
74.24
US$127,619 		1,719 -0.2% 74.24 US$127,619
2024-11-15 2024-11-13 S Sale
3.4
MEHMEL ROBERT F

President and COO

Officer
1,781 -0.2%
73.13
US$130,245 		1,781 -0.2% 73.13 US$130,245
2024-11-13 2024-11-13 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
18,107 -1.0%
78.39
US$1,419,408 		18,107 -1.0% 78.39 US$1,419,408
2024-11-13 2024-11-13 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
15,148 -0.8%
77.45
US$1,173,213 		15,148 -0.8% 77.45 US$1,173,213
2024-11-13 2024-11-13 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
17,000 -0.9%
76.43
US$1,299,310 		17,000 -0.9% 76.43 US$1,299,310
2024-11-13 2024-11-13 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
90,741 -4.5%
75.34
US$6,836,427 		90,741 -4.5% 75.34 US$6,836,427
2024-11-13 2024-11-13 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
80,105 -3.8%
74.72
US$5,985,446 		80,105 -3.8% 74.72 US$5,985,446
2024-11-13 2024-11-13 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
11,020 -0.5%
73.39
US$808,758 		11,020 -0.5% 73.39 US$808,758
2024-11-13 2024-11-13 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
5,536 -0.3%
72.43
US$400,972 		5,536 -0.3% 72.43 US$400,972
2024-11-13 2024-11-13 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
4,100 -0.2%
71.32
US$292,412 		4,100 -0.2% 71.32 US$292,412
2024-11-13 2024-11-11 S Sale
3.4
MEHMEL ROBERT F

President and COO

Officer
8,697 -1.2%
70.10
US$609,660 		8,697 -1.2% 70.10 US$609,660
2024-11-13 2024-11-11 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
67,164 -3.1%
70.08
US$4,706,853 		67,164 -3.1% 70.08 US$4,706,853
2024-10-18 2024-10-16 S Sale
3.4
MEHMEL ROBERT F

President and COO

Officer
912 -0.1%
70.06
US$63,895 		912 -0.1% 70.06 US$63,895
2024-10-18 2024-10-16 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
6,532 -0.3%
70.06
US$457,632 		6,532 -0.3% 70.06 US$457,632
2024-10-04 2024-10-02 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
300 -0.0%
70.07
US$21,021 		300 -0.0% 70.07 US$21,021
2024-10-01 2024-10-01 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
1,821 -0.1%
70.02
US$127,506 		1,821 -0.1% 70.02 US$127,506
2024-10-01 2024-10-01 S Sale
3.4
MEHMEL ROBERT F

President and COO

Officer
84 -0.0%
70.01
US$5,881 		84 -0.0% 70.01 US$5,881
2024-10-01 2024-09-30 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
3,121 -0.1%
70.00
US$218,470 		3,121 -0.1% 70.00 US$218,470
2024-10-01 2024-09-27 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
13,690 -0.6%
70.03
US$958,711 		13,690 -0.6% 70.03 US$958,711
2024-10-01 2024-09-27 S Sale
3.4
MEHMEL ROBERT F

President and COO

Officer
3,265 -0.4%
70.04
US$228,681 		3,265 -0.4% 70.04 US$228,681
2024-09-25 2024-09-23 S Sale
3.4
MEHMEL ROBERT F

President and COO

Officer
3,174 -0.4%
70.01
US$222,212 		3,174 -0.4% 70.01 US$222,212
2024-09-25 2024-09-23 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
20,135 -0.9%
70.01
US$1,409,651 		20,135 -0.9% 70.01 US$1,409,651
2024-09-23 2024-09-20 S Sale
3.4
MEHMEL ROBERT F

President and COO

Officer
1,205 -0.2%
70.11
US$84,483 		1,205 -0.2% 70.11 US$84,483
2024-09-23 2024-09-20 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
6,233 -0.3%
70.14
US$437,183 		6,233 -0.3% 70.14 US$437,183
2024-09-23 2024-09-19 S Sale
3.4
MEHMEL ROBERT F

President and COO

Officer
7,663 -1.0%
70.02
US$536,563 		7,663 -1.0% 70.02 US$536,563
2024-09-23 2024-09-19 S Sale
2.9
KRAMER RONALD J

Chairman of the Board and CEO

Executive Director
39,247 -1.7%
70.03
US$2,748,467 		39,247 -1.7% 70.03 US$2,748,467
2024-09-20 2024-09-19 S Sale
3.0
Kaplan Seth L.

Sr VP, Gen. Counsel and Secy

Officer
30,430 -15.3%
70.00
US$2,130,100 		30,430 -15.3% 70.00 US$2,130,100
2024-09-20 2024-09-18 S Sale
3.0
Kaplan Seth L.

Sr VP, Gen. Counsel and Secy

Officer
4,844 -2.4%
70.00
US$339,080 		4,844 -2.4% 70.00 US$339,080
2024-09-19 2024-09-18 S Sale
3.4
MEHMEL ROBERT F

President and COO

Officer
2,154 -0.3%
69.27
US$149,208 		2,154 -0.3% 69.27 US$149,208
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